What is gcmuw.exe?
gcmuw.exe is usually located in the 'c:\users\%USERNAME%\appdata\local\temp\' folder.
Some of the anti-virus scanners at VirusTotal detected gcmuw.exe.
If you have additional information about the file, please share it with the FreeFixer users by posting a comment at the bottom of this page.
Digital signatures [?]
gcmuw.exe is not signed.
VirusTotal report
57 of the 70 anti-virus programs at VirusTotal detected the gcmuw.exe file. That's a 81% detection rate.
| Scanner | Detection Name |
|---|---|
| Acronis | suspicious |
| Ad-Aware | Gen:Variant.Graftor.593676 |
| AegisLab | Trojan.Multi.Generic.4!c |
| AhnLab-V3 | Trojan/Win32.Agent.C3239600 |
| Alibaba | Trojan:Win32/Generic.84c7b0d5 |
| ALYac | Gen:Variant.Graftor.593676 |
| Antiy-AVL | Trojan/Win32.Fuerboos |
| APEX | Malicious |
| Arcabit | Trojan.Graftor.D90F0C |
| Avast | Win32:Trojan-gen |
| AVG | Win32:Trojan-gen |
| Avira | TR/Agent.aglo |
| BitDefender | Gen:Variant.Graftor.593676 |
| CAT-QuickHeal | Trojan.Multi |
| Comodo | Malware@#ok58kbdocpo |
| CrowdStrike | win/malicious_confidence_90% (W) |
| Cybereason | malicious.c564de |
| Cylance | Unsafe |
| Cyren | W32/Trojan.IMLM-2609 |
| DrWeb | Trojan.Siggen8.30615 |
| Emsisoft | Gen:Variant.Graftor.593676 (B) |
| Endgame | malicious (moderate confidence) |
| ESET-NOD32 | Win32/Agent.AAPO |
| F-Secure | Trojan.TR/Agent.aglo |
| FireEye | Generic.mg.f1c5876c564de08c |
| Fortinet | W32/Agent.AAPO!tr |
| GData | Gen:Variant.Graftor.593676 |
| Ikarus | Trojan.Win32.Agent |
| Invincea | heuristic |
| K7AntiVirus | Riskware ( 0040eff71 ) |
| K7GW | Riskware ( 0040eff71 ) |
| Kaspersky | HEUR:Trojan.Win32.Generic |
| Malwarebytes | RiskWare.Agent |
| MAX | malware (ai score=67) |
| MaxSecure | Trojan.Malware.74290131.susgen |
| McAfee | RDN/Generic.cf |
| McAfee-GW-Edition | BehavesLike.Win32.Fareit.lc |
| Microsoft | Trojan:Win32/Tiggre!rfn |
| MicroWorld-eScan | Gen:Variant.Graftor.593676 |
| NANO-Antivirus | Trojan.Win32.Graftor.fqapsg |
| Paloalto | generic.ml |
| Panda | Trj/GdSda.A |
| Qihoo-360 | Win32/Trojan.2ff |
| Rising | Trojan.Agent!8.B1E (CLOUD) |
| SentinelOne | DFI - Malicious PE |
| Sophos | Mal/Generic-S |
| SUPERAntiSpyware | Trojan.Agent/Gen-Dropper |
| Symantec | Trojan.Gen.2 |
| Trapmine | malicious.high.ml.score |
| TrendMicro | Trojan.Win32.UWAMSON.USXVPEA19 |
| TrendMicro-HouseCall | Trojan.Win32.UWAMSON.USXVPEA19 |
| VBA32 | BScope.Trojan.SvcHorse.01643 |
| ViRobot | Trojan.Win32.Z.Graftor.18944.CX |
| Webroot | W32.Malware.Gen |
| Yandex | Trojan.Agent!WQwvBrnH9ps |
| Zillya | Trojan.Agent.Win32.1095930 |
| ZoneAlarm | HEUR:Trojan.Win32.Generic |
Sandbox Report
The following information was gathered by executing the file inside Cuckoo Sandbox.
Summary
Successfully executed process in sandbox.
Summary
{
"directory_created": [
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"dll_loaded": [
"KERNEL32.DLL",
"SHELL32.dll",
"kernel32.dll",
"ADVAPI32.dll",
"PSAPI.DLL",
"USER32.dll"
],
"file_opened": [
"C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui",
"C:\\",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System",
"HKEY_CLASSES_ROOT\\http\\shell\\open\\command",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run",
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Command Processor",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce",
"HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Windows\\System",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor",
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce"
],
"file_deleted": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\wmsetup.log",
"C:\\Users\\cuck\\AppData\\Local\\CSIDL_",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\FXSAPIDebugLogFile.txt",
"C:\\Users\\cuck\\AppData\\Local\\CSIDL_X",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\cuck.bmp"
],
"directory_removed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low",
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"mutex": [
"LKJ_HGFDS_VBNM_C"
],
"file_failed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\JavadebugLog.zip"
],
"command_line": [
"reg delete \"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"CMD \/C DEL \/F \/S \/Q \"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"CMD \/C DEL \/F \/S \/Q \"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"reg delete \"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"CMD \/C RD %TEMP% \/S\/Q & MKDIR %TEMP%"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\AutoRun",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\CompletionChar",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\http\\shell\\open\\command\\(Default)",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\AutoRun",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\CompletionChar"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low\\*",
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files\\*",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE\\*",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\Users\\cuck",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
"C:\\Users",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\*",
"C:\\Users\\cuck\\AppData\\Local",
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*"
],
"regkey_written": [
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost"
]
}Dropped
[
{
"yara": [],
"sha1": "8379d3eb25005ea44ff94ec3084ef8edb6004657",
"name": "d5f91f902fa82bf3_wmsetup.log",
"filepath": "C:\\Users\\cuck\\AppData\\Local\\Temp\\wmsetup.log",
"type": "ASCII text, with CRLF line terminators",
"sha256": "d5f91f902fa82bf3f14f75d73ef149289210624197b4f93a20c1cf121c1d1129",
"urls": [],
"crc32": "7CA4126E",
"path": "\/home\/hpuser\/.cuckoo\/storage\/analyses\/381\/files\/d5f91f902fa82bf3_wmsetup.log",
"ssdeep": null,
"size": 967,
"sha512": "98504e5581dfed309b0db16f34178807e8dae1d03c2f638226a9bc630fe85d9c67fc8b87bed71f2876372a2de0a12bc7c92e23aa9045face0958d09b3b47fcb5",
"pids": [],
"md5": "781d127fab34bdaab1fdb62a08e27a9e"
},
{
"yara": [],
"sha1": "da39a3ee5e6b4b0d3255bfef95601890afd80709",
"name": "e3b0c44298fc1c14_FXSAPIDebugLogFile.txt",
"type": "empty",
"sha256": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
"urls": [],
"crc32": "00000000",
"path": "\/home\/hpuser\/.cuckoo\/storage\/analyses\/381\/files\/e3b0c44298fc1c14_FXSAPIDebugLogFile.txt",
"ssdeep": null,
"size": 0,
"sha512": "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e",
"md5": "d41d8cd98f00b204e9800998ecf8427e"
},
{
"yara": [],
"sha1": "9f2ec91b2b12ac19ede7b8be0225834d5249f676",
"name": "c93ab644877f33a7_c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"filepath": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"type": "PE32 executable (GUI) Intel 80386, for MS Windows, UPX compressed",
"sha256": "c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532",
"urls": [],
"crc32": "2FFE2689",
"path": "\/home\/hpuser\/.cuckoo\/storage\/analyses\/381\/files\/c93ab644877f33a7_c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"ssdeep": null,
"size": 18944,
"sha512": "662730b5488d5ca20722aa0cb4a928e3b05fc939a8c4da520b795dd802a90479c000fe1a167bd5fd4c2ed8a41c7d56594cf0a244373c1eb15cea8df43cb079c1",
"pids": [],
"md5": "f1c5876c564de08c538b284587946b1e"
},
{
"yara": [],
"sha1": "369e8ac39d762e531d961c58b8c5dc84d19ba989",
"name": "d632e9dbacdcd8f6_cuck.bmp",
"filepath": "C:\\Users\\cuck\\AppData\\Local\\Temp\\cuck.bmp",
"type": "PC bitmap, Windows 3.x format, 128 x 128 x 24",
"sha256": "d632e9dbacdcd8f6b86ba011ed6b23f961d104869654caa764216ea57a916524",
"urls": [],
"crc32": "3C5BAF10",
"path": "\/home\/hpuser\/.cuckoo\/storage\/analyses\/381\/files\/d632e9dbacdcd8f6_cuck.bmp",
"ssdeep": null,
"size": 49208,
"sha512": "7726bd196cfee176f3d2002e30d353f991ffeafda90bac23d0b44c84c104aa263b0c78f390dd85833635667a3ca3863d2e8cd806dad5751f7984b2d34cafdc57",
"pids": [],
"md5": "343fa15c150a516b20cc9f787cfd530e"
}
]Generic
[
{
"process_path": "C:\\Windows\\SysWOW64\\reg.exe",
"process_name": "reg.exe",
"pid": 964,
"summary": {
"file_opened": [
"C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
],
"dll_loaded": [
"kernel32.dll"
]
},
"first_seen": 1560545590.0625,
"ppid": 2124
},
{
"process_path": "C:\\Windows\\SysWOW64\\cmd.exe",
"process_name": "cmd.exe",
"pid": 2268,
"summary": {
"file_opened": [
"C:\\"
],
"file_exists": [
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Windows\\System",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor",
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Command Processor"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\AutoRun",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\CompletionChar",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\AutoRun",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\CompletionChar"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\Users\\cuck",
"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
"C:\\Users",
"C:\\Users\\cuck\\AppData\\Local"
]
},
"first_seen": 1560545590.2031,
"ppid": 2124
},
{
"process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"process_name": "c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"pid": 2124,
"summary": {
"regkey_written": [
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost"
],
"dll_loaded": [
"ADVAPI32.dll",
"SHELL32.dll",
"KERNEL32.DLL",
"PSAPI.DLL",
"USER32.dll"
],
"command_line": [
"reg delete \"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"CMD \/C DEL \/F \/S \/Q \"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"CMD \/C DEL \/F \/S \/Q \"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"reg delete \"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"CMD \/C RD %TEMP% \/S\/Q & MKDIR %TEMP%"
],
"regkey_opened": [
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce",
"HKEY_CLASSES_ROOT\\http\\shell\\open\\command",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce"
],
"file_deleted": [
"C:\\Users\\cuck\\AppData\\Local\\CSIDL_",
"C:\\Users\\cuck\\AppData\\Local\\CSIDL_X"
],
"mutex": [
"LKJ_HGFDS_VBNM_C"
],
"file_failed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\JavadebugLog.zip"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_CURRENT_USER\\http\\shell\\open\\command\\(Default)"
]
},
"first_seen": 1560545589.6875,
"ppid": 2504
},
{
"process_path": "C:\\Windows\\SysWOW64\\cmd.exe",
"process_name": "cmd.exe",
"pid": 368,
"summary": {
"file_opened": [
"C:\\"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup",
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*",
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Windows\\System",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor",
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Command Processor"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\AutoRun",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\CompletionChar",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\AutoRun",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\CompletionChar"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*",
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck",
"C:\\Users",
"C:\\Users\\cuck\\AppData\\Local",
"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.*"
]
},
"first_seen": 1560545590.1562,
"ppid": 2124
},
{
"process_path": "C:\\Windows\\SysWOW64\\cmd.exe",
"process_name": "cmd.exe",
"pid": 856,
"summary": {
"directory_created": [
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"file_opened": [
"C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Policies\\Microsoft\\Windows\\System",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor",
"HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Command Processor"
],
"file_deleted": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\FXSAPIDebugLogFile.txt",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\wmsetup.log",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\cuck.bmp",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin"
],
"directory_removed": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low",
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"file_exists": [
"C:\\Users\\cuck\\AppData\\Local\\Temp"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\AutoRun",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\CompletionChar",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\EnableExtensions",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Locale\\00000409",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language Groups\\1",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\PathCompletionChar",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\DisableUNCCheck",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\Windows Error Reporting\\WMR\\Disable",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DelayedExpansion",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\AutoRun",
"HKEY_CURRENT_USER\\Software\\Microsoft\\Command Processor\\DefaultColor",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Command Processor\\CompletionChar"
],
"directory_enumerated": [
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low",
"C:\\Users\\cuck\\AppData",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files\\*",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE\\*",
"C:\\Users\\cuck\\AppData\\Local\\Temp",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\Low\\*",
"C:\\Users\\cuck",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\mozilla-temp-files",
"C:\\Users",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\WPDNSE",
"C:\\Users\\cuck\\AppData\\Local\\Temp\\*",
"C:\\Users\\cuck\\AppData\\Local"
]
},
"first_seen": 1560545590.0156,
"ppid": 2124
},
{
"process_path": "C:\\Windows\\SysWOW64\\reg.exe",
"process_name": "reg.exe",
"pid": 2492,
"summary": {
"file_opened": [
"C:\\Windows\\SysWOW64\\en-US\\KERNELBASE.dll.mui",
"C:\\Windows\\Globalization\\Sorting\\sortdefault.nls"
],
"regkey_opened": [
"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System",
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run"
],
"regkey_read": [
"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\en-US",
"HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\ExtendedLocale\\en-US"
],
"dll_loaded": [
"kernel32.dll"
]
},
"first_seen": 1560545590.1094,
"ppid": 2124
},
{
"process_path": "C:\\Windows\\System32\\lsass.exe",
"process_name": "lsass.exe",
"pid": 476,
"summary": {},
"first_seen": 1560545589.3438,
"ppid": 376
}
]Signatures
[
{
"markcount": 8,
"families": [],
"description": "Command line console output was observed",
"severity": 1,
"marks": [
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin - ",
"console_handle": "0x0000000b"
},
"time": 1560545590.1256,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 64
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "Access is denied.\r\n",
"console_handle": "0x0000000b"
},
"time": 1560545590.1406,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 70
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "C:\\Users\\cuck\\AppData\\Local\\Temp\\FXSAPIDebugLogFile.txt - ",
"console_handle": "0x0000000b"
},
"time": 1560545590.1406,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 75
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "The process cannot access the file because it is being used by another process.\r\n",
"console_handle": "0x0000000b"
},
"time": 1560545590.1566,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 77
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "The process cannot access the file because it is being used by another process.\r\n",
"console_handle": "0x0000000b"
},
"time": 1560545590.1566,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 105
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "A subdirectory or file C:\\Users\\cuck\\AppData\\Local\\Temp already exists.\r\n",
"console_handle": "0x0000000b"
},
"time": 1560545590.1566,
"tid": 2968,
"flags": {}
},
"pid": 856,
"type": "call",
"cid": 108
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "The operation completed successfully.\r\n",
"console_handle": "0x00000007"
},
"time": 1560545590.1715,
"tid": 1948,
"flags": {}
},
"pid": 964,
"type": "call",
"cid": 32
},
{
"call": {
"category": "misc",
"status": 1,
"stacktrace": [],
"api": "WriteConsoleW",
"return_value": 1,
"arguments": {
"buffer": "The operation completed successfully.\r\n",
"console_handle": "0x00000007"
},
"time": 1560545590.1874,
"tid": 2272,
"flags": {}
},
"pid": 2492,
"type": "call",
"cid": 32
}
],
"references": [],
"name": "console_output"
},
{
"markcount": 1,
"families": [],
"description": "Drops an executable to the user AppData folder",
"severity": 2,
"marks": [
{
"category": "file",
"ioc": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin",
"type": "ioc",
"description": null
}
],
"references": [],
"name": "exe_appdata"
},
{
"markcount": 2,
"families": [],
"description": "The binary likely contains encrypted or compressed data indicative of a packer",
"severity": 2,
"marks": [
{
"entropy": 7.8398965292274,
"section": {
"size_of_data": "0x00004400",
"virtual_address": "0x0000a000",
"entropy": 7.8398965292274,
"name": "UPX1",
"virtual_size": "0x00005000"
},
"type": "generic",
"description": "A section with a high entropy has been found"
},
{
"entropy": 0.97142857142857,
"type": "generic",
"description": "Overall entropy of this PE file is high"
}
],
"references": [
"http:\/\/www.forensickb.com\/2013\/03\/file-entropy-explained.html",
"http:\/\/virii.es\/U\/Using%20Entropy%20Analysis%20to%20Find%20Encrypted%20and%20Packed%20Malware.pdf"
],
"name": "packer_entropy"
},
{
"markcount": 3,
"families": [],
"description": "The executable is compressed using UPX",
"severity": 2,
"marks": [
{
"section": "UPX0",
"type": "generic",
"description": "Section name indicates UPX"
},
{
"section": "UPX1",
"type": "generic",
"description": "Section name indicates UPX"
},
{
"section": "UPX2",
"type": "generic",
"description": "Section name indicates UPX"
}
],
"references": [],
"name": "packer_upx"
},
{
"markcount": 5,
"families": [],
"description": "Uses Windows utilities for basic Windows functionality",
"severity": 2,
"marks": [
{
"category": "cmdline",
"ioc": "reg delete \"HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"type": "ioc",
"description": null
},
{
"category": "cmdline",
"ioc": "CMD \/C DEL \/F \/S \/Q \"C:\\Users\\cuck\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"type": "ioc",
"description": null
},
{
"category": "cmdline",
"ioc": "CMD \/C DEL \/F \/S \/Q \"C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\Startup\\*.* \"",
"type": "ioc",
"description": null
},
{
"category": "cmdline",
"ioc": "reg delete \"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\" \/f",
"type": "ioc",
"description": null
},
{
"category": "cmdline",
"ioc": "CMD \/C RD %TEMP% \/S\/Q & MKDIR %TEMP%",
"type": "ioc",
"description": null
}
],
"references": [
"http:\/\/blog.jpcert.or.jp\/2016\/01\/windows-commands-abused-by-attackers.html"
],
"name": "uses_windows_utilities"
},
{
"markcount": 2,
"families": [],
"description": "Installs itself for autorun at Windows startup",
"severity": 3,
"marks": [
{
"type": "generic",
"reg_key": "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost",
"reg_value": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin"
},
{
"type": "generic",
"reg_key": "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\RunOnce\\SearchFilterHost",
"reg_value": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532.bin"
}
],
"references": [],
"name": "persistence_autorun"
}
]Yara
The Yara rules did not detect anything in the file.
Network
{
"tls": [],
"udp": [
{
"src": "192.168.56.101",
"dst": "192.168.56.255",
"offset": 662,
"time": 6.2328219413757,
"dport": 137,
"sport": 137
},
{
"src": "192.168.56.101",
"dst": "192.168.56.255",
"offset": 5342,
"time": 12.232111930847,
"dport": 138,
"sport": 138
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 7186,
"time": 6.1654169559479,
"dport": 5355,
"sport": 51001
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 7514,
"time": 4.1652879714966,
"dport": 5355,
"sport": 53595
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 7842,
"time": 6.1729629039764,
"dport": 5355,
"sport": 53848
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 8170,
"time": 4.67307305336,
"dport": 5355,
"sport": 54255
},
{
"src": "192.168.56.101",
"dst": "224.0.0.252",
"offset": 8498,
"time": 3.0583338737488,
"dport": 5355,
"sport": 55314
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 8826,
"time": 4.2377479076385,
"dport": 1900,
"sport": 1900
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 28236,
"time": 4.2005729675293,
"dport": 3702,
"sport": 49152
},
{
"src": "192.168.56.101",
"dst": "239.255.255.250",
"offset": 36620,
"time": 6.2632830142975,
"dport": 1900,
"sport": 53598
}
],
"dns_servers": [],
"http": [],
"icmp": [],
"smtp": [],
"tcp": [],
"smtp_ex": [],
"mitm": [],
"hosts": [],
"pcap_sha256": "2f099f2b9687538a48ebc9d89f38a8f4d6a089d5dfd5d1b91652cd4ea389eaad",
"dns": [],
"http_ex": [],
"domains": [],
"dead_hosts": [],
"sorted_pcap_sha256": "d4fafb99ad62a24715777ff20939550a0e281c9cd1f58b8b3e4b2eb8611ad57f",
"irc": [],
"https_ex": []
}Screenshots
gcmuw.exe removal instructions
The instructions below shows how to remove gcmuw.exe with help from the FreeFixer removal tool. Basically, you install FreeFixer, scan your computer, check the gcmuw.exe file for removal, restart your computer and scan it again to verify that gcmuw.exe has been successfully removed. Here are the removal instructions in more detail:
- Download and install FreeFixer: http://www.freefixer.com/download.html
- Start FreeFixer and press the Start Scan button. The scan will finish in approximately five minutes.
- When the scan is finished, locate gcmuw.exe in the scan result and tick the checkbox next to the gcmuw.exe file. Do not check any other file for removal unless you are 100% sure you want to delete it. Tip: Press CTRL-F to open up FreeFixer's search dialog to quickly locate gcmuw.exe in the scan result.
c:\users\%USERNAME%\appdata\local\temp\gcmuw.exe 
- Scroll down to the bottom of the scan result and press the Fix button. FreeFixer will now delete the gcmuw.exe file.
- Restart your computer.
- Start FreeFixer and scan your computer again. If gcmuw.exe still remains in the scan result, proceed with the next step. If gcmuw.exe is gone from the scan result you're done.
- If gcmuw.exe still remains in the scan result, check its checkbox again in the scan result and click Fix.
- Restart your computer.
- Start FreeFixer and scan your computer again. Verify that gcmuw.exe no longer appear in the scan result.
Hashes [?]
| Property | Value |
|---|---|
| MD5 | f1c5876c564de08c538b284587946b1e |
| SHA256 | c93ab644877f33a7c1829a4dd942ee53ff98537a21dc301ad8c7707bf24e9532 |
Error Messages
These are some of the error messages that can appear related to gcmuw.exe:
gcmuw.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
gcmuw.exe - Application Error. The instruction at "0xXXXXXXXX" referenced memory at "0xXXXXXXXX". The memory could not be "read/written". Click on OK to terminate the program.
gcmuw.exe has stopped working.
End Program - gcmuw.exe. This program is not responding.
gcmuw.exe is not a valid Win32 application.
gcmuw.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.
What will you do with gcmuw.exe?
To help other users, please let us know what you will do with gcmuw.exe:
Comments
Please share with the other users what you think about this file. What does this file do? Is it legitimate or something that your computer is better without? Do you know how it was installed on your system? Did you install it yourself or did it come bundled with some other software? Is it running smoothly or do you get some error message? Any information that will help to document this file is welcome. Thank you for your contributions.
I'm reading all new comments so don't hesitate to post a question about the file. If I don't have the answer perhaps another user can help you.
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