What is lsmss.exe?

lsmss.exe is part of Au3Info and developed by AutoIt Team according to the lsmss.exe version information.

lsmss.exe's description is "Au3Info"

lsmss.exe is usually located in the 'c:\downloads\' folder.

Some of the anti-virus scanners at VirusTotal detected lsmss.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.

Vendor and version information [?]

The following is the available information on lsmss.exe:

PropertyValue
Product nameAu3Info
Company nameAutoIt Team
File descriptionAu3Info
Internal nameAu3Info.exe
Original filenameAu3Info.exe
Commentshttp://www.autoitscript.com/autoit3/
Legal copyright©1999-2018 Jonathan Bennett & AutoIt Team
Product version3, 3, 14, 5
File version3, 3, 14, 5

Here's a screenshot of the file properties when displayed by Windows Explorer:

Product nameAu3Info
Company nameAutoIt Team
File descriptionAu3Info
Internal nameAu3Info.exe
Original filenameAu3Info.exe
Commentshttp://www.autoitscript.com/autoit3/
Legal copyright©1999-2018 Jonathan Bennett & AutoI..
Product version3, 3, 14, 5
File version3, 3, 14, 5

Digital signatures [?]

lsmss.exe is not signed.

VirusTotal report

41 of the 68 anti-virus programs at VirusTotal detected the lsmss.exe file. That's a 60% detection rate.

ScannerDetection Name
Ad-Aware Gen:Variant.Ursu.402044
AegisLab Trojan.MSIL.Shelma.4!c
Alibaba Trojan:MSIL/Shelma.0fc9e762
ALYac Gen:Variant.Ursu.402044
Antiy-AVL Trojan/MSIL.Shelma
Arcabit Trojan.Ursu.D6227C
Avast Win32:Malware-gen
AVG Win32:Malware-gen
Avira TR/AD.PatchedWinSwrort.stlog
BitDefender Gen:Variant.Ursu.402044
CAT-QuickHeal Trojan.MSIL
Comodo Malware@#l5ahw3youvz9
CrowdStrike win/malicious_confidence_60% (W)
Cybereason malicious.4af95a
Cyren W32/Trojan.VINJ-7865
DrWeb Trojan.PWS.Siggen1.61575
eGambit PE.Heur.InvalidSig
Emsisoft Gen:Variant.Ursu.402044 (B)
ESET-NOD32 a variant of Generik.HPINXAS
F-Secure Trojan.TR/AD.PatchedWinSwrort.stlog
FireEye Gen:Variant.Ursu.402044
Fortinet MSIL/Kryptik.QLA!tr
GData Win32.Trojan.Agent.1W20H9
Ikarus Trojan.Patched
Kaspersky HEUR:Trojan.MSIL.Shelma.gen
Malwarebytes Trojan.Crypt.MSIL
McAfee RDN/Generic.dx
McAfee-GW-Edition RDN/Generic.dx
Microsoft Trojan:Win32/Occamy.C
MicroWorld-eScan Gen:Variant.Ursu.402044
Paloalto generic.ml
Panda Trj/GdSda.A
Qihoo-360 Win32/Trojan.cac
Rising Trojan.Shelma!8.1A3D (CLOUD)
SentinelOne DFI - Suspicious PE
Sophos Mal/Generic-S
Tencent Win32.Trojan.Falsesign.Srdj
Trapmine malicious.high.ml.score
TrendMicro-HouseCall TROJ_GEN.R004C0OAM19
VBA32 TScope.Trojan.MSIL
ZoneAlarm HEUR:Trojan.MSIL.Shelma.gen
41 of the 68 anti-virus programs detected the lsmss.exe file.

Sandbox Report

The following information was gathered by executing the file inside Cuckoo Sandbox.

Summary

Successfully executed process in sandbox.

Summary

{
    "dll_loaded": [
        "ADVAPI32.dll",
        "SHLWAPI.dll",
        "C:\\Windows\\system32\\IMM32.DLL",
        "gdi32.dll"
    ],
    "file_failed": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin.config"
    ],
    "regkey_opened": [
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards\\v4.0.30319",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\AppPatch",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\v2.0",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards"
    ],
    "file_exists": [
        "C:\\Windows\\System32\\MSCOREE.DLL.local"
    ],
    "file_opened": [
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language\\InstallLanguageFallback",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\NoGuiFromShim",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\InstallRoot",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\CLRLoadLogDir",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\MUI\\UILanguages\\en-US\\Type",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\OnlyUseLatestCLR",
        "HKEY_CURRENT_USER\\Control Panel\\Desktop\\PreferredUILanguages",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\MUI\\UILanguages\\en-US\\AlternateCodePage",
        "HKEY_CURRENT_USER\\Control Panel\\Desktop\\MuiCached\\MachinePreferredUILanguages",
        "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\EMPTY"
    ],
    "directory_enumerated": [
        "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\mscoreei.dll",
        "C:\\Windows\\Microsoft.NET\\Framework\\Upgrades.2.0.50727\\mscoreei.dll",
        "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\mscorwks.dll"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1582534385.328125,
        "ppid": 376
    },
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin",
        "process_name": "c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin",
        "pid": 2436,
        "summary": {
            "dll_loaded": [
                "ADVAPI32.dll",
                "SHLWAPI.dll",
                "C:\\Windows\\system32\\IMM32.DLL",
                "gdi32.dll"
            ],
            "file_failed": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin.config"
            ],
            "regkey_opened": [
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards\\v4.0.30319",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\AppPatch",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\Policy\\v2.0",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards"
            ],
            "file_exists": [
                "C:\\Windows\\System32\\MSCOREE.DLL.local"
            ],
            "file_opened": [
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc.bin"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\Language\\InstallLanguageFallback",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\NoGuiFromShim",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\InstallRoot",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\CLRLoadLogDir",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\MUI\\UILanguages\\en-US\\Type",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\.NETFramework\\OnlyUseLatestCLR",
                "HKEY_CURRENT_USER\\Control Panel\\Desktop\\PreferredUILanguages",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\MUI\\UILanguages\\en-US\\AlternateCodePage",
                "HKEY_CURRENT_USER\\Control Panel\\Desktop\\MuiCached\\MachinePreferredUILanguages",
                "HKEY_LOCAL_MACHINE\\SYSTEM\\ControlSet001\\Control\\Nls\\CustomLocale\\EMPTY"
            ],
            "directory_enumerated": [
                "C:\\Windows\\Microsoft.NET\\Framework\\v2.0.50727\\mscoreei.dll",
                "C:\\Windows\\Microsoft.NET\\Framework\\Upgrades.2.0.50727\\mscoreei.dll",
                "C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\mscorwks.dll"
            ]
        },
        "first_seen": 1582534385.59375,
        "ppid": 2736
    }
]

Signatures

[
    {
        "markcount": 1,
        "families": [],
        "description": "This executable has a PDB path",
        "severity": 1,
        "marks": [
            {
                "category": "pdb_path",
                "ioc": "dbFTvsVzFdosBkwzaWUQIG.pdb",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "has_pdb"
    },
    {
        "markcount": 1,
        "families": [],
        "description": "The executable contains unknown PE section names indicative of a packer (could be a false positive)",
        "severity": 1,
        "marks": [
            {
                "category": "section",
                "ioc": ".sdata",
                "type": "ioc",
                "description": null
            }
        ],
        "references": [],
        "name": "pe_features"
    },
    {
        "markcount": 3,
        "families": [],
        "description": "The binary likely contains encrypted or compressed data indicative of a packer",
        "severity": 2,
        "marks": [
            {
                "entropy": 7.003636586369884,
                "section": {
                    "size_of_data": "0x00081c00",
                    "virtual_address": "0x00002000",
                    "entropy": 7.003636586369884,
                    "name": ".text",
                    "virtual_size": "0x00081b34"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            },
            {
                "entropy": 6.8302574518287305,
                "section": {
                    "size_of_data": "0x00000200",
                    "virtual_address": "0x00084000",
                    "entropy": 6.8302574518287305,
                    "name": ".sdata",
                    "virtual_size": "0x000001fb"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            },
            {
                "entropy": 0.9194690265486726,
                "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"
    }
]

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": 6.201948165893555,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3462,
            "time": 6.139264106750488,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3790,
            "time": 4.14717698097229,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4118,
            "time": 6.1488330364227295,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4446,
            "time": 4.657328128814697,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 4774,
            "time": 3.0377609729766846,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 5102,
            "time": 4.201876163482666,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 12720,
            "time": 4.169743061065674,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 16912,
            "time": 6.2639641761779785,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "30b876d294e3ea62f9eed1f031394cab43fb7d4bd6a3d1022c0e470b5ca2ec85",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "41cfd7d6b1acccacf2bb0bcda4ae1bc96bf58a5e10a57094624b3e1203e2c172",
    "irc": [],
    "https_ex": []
}

Screenshots

Screenshot from the sandbox

lsmss.exe removal instructions

The instructions below shows how to remove lsmss.exe with help from the FreeFixer removal tool. Basically, you install FreeFixer, scan your computer, check the lsmss.exe file for removal, restart your computer and scan it again to verify that lsmss.exe has been successfully removed. Here are the removal instructions in more detail:

  1. Download and install FreeFixer: http://www.freefixer.com/download.html
  2. Start FreeFixer and press the Start Scan button. The scan will finish in approximately five minutes.
    Screenshot of Start Scan button
  3. When the scan is finished, locate lsmss.exe in the scan result and tick the checkbox next to the lsmss.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 lsmss.exe in the scan result.
    Red arrow point on the unwanted file
    c:\downloads\lsmss.exe
  4. Scroll down to the bottom of the scan result and press the Fix button. FreeFixer will now delete the lsmss.exe file.
    Screenshot of Fix button
  5. Restart your computer.
  6. Start FreeFixer and scan your computer again. If lsmss.exe still remains in the scan result, proceed with the next step. If lsmss.exe is gone from the scan result you're done.
  7. If lsmss.exe still remains in the scan result, check its checkbox again in the scan result and click Fix.
  8. Restart your computer.
  9. Start FreeFixer and scan your computer again. Verify that lsmss.exe no longer appear in the scan result.
Please select the option that best describe your thoughts on the removal instructions given above








Free Questionnaires

Hashes [?]

PropertyValue
MD5501b5244af95a20fcec9191444aaaa6b
SHA256c03494c6681bd7c5af1d3d7751ace26269efa7e135bed067f54de8deabba4ebc

Error Messages

These are some of the error messages that can appear related to lsmss.exe:

lsmss.exe has encountered a problem and needs to close. We are sorry for the inconvenience.

lsmss.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.

Au3Info has stopped working.

End Program - lsmss.exe. This program is not responding.

lsmss.exe is not a valid Win32 application.

lsmss.exe - Application Error. The application failed to initialize properly (0xXXXXXXXX). Click OK to terminate the application.

What will you do with lsmss.exe?

To help other users, please let us know what you will do with lsmss.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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