What is Orcus.exe?

Orcus.exe is part of Defebder32 and developed by Microsoft® according to the Orcus.exe version information.

Orcus.exe's description is "Microsoft Windows Defender"

Orcus.exe is usually located in the 'C:\Program Files\Orcus\' folder.

Some of the anti-virus scanners at VirusTotal detected Orcus.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 Orcus.exe:

Property	Value
Product name	Defebder32
Company name	Microsoft®
File description	Microsoft Windows Defender
Internal name	Windows Defender
Original filename	Orcus.exe
Legal copyright	Microsoft® All Rights Reserved
Legal trademark	Microsoft®
Product version	8.4.0.4
File version	6.7.0.7

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

Product name	Defebder32
Company name	Microsoft®
File description	Microsoft Windows Defender
Internal name	Windows Defender
Original filename	Orcus.exe
Legal copyright	Microsoft® All Rights Reserved
Legal trademark	Microsoft®
Product version	8.4.0.4
File version	6.7.0.7

Digital signatures [?]

Orcus.exe is not signed.

VirusTotal report

52 of the 71 anti-virus programs at VirusTotal detected the Orcus.exe file. That's a 73% detection rate.

Scanner	Detection Name
Acronis	suspicious
Ad-Aware	Generic.MSIL.PasswordStealerA.956B2957
AegisLab	Trojan.MSIL.Generic.4!c
AhnLab-V3	Win-Trojan/OrcusRAT.Exp
Alibaba	Backdoor:MSIL/Orcus.a2156118
ALYac	Generic.MSIL.PasswordStealerA.956B2957
Arcabit	Generic.MSIL.PasswordStealerA.956B2957
Avast	Win32:RATX-gen [Trj]
AVG	Win32:RATX-gen [Trj]
Avira	HEUR/AGEN.1013795
BitDefender	Generic.MSIL.PasswordStealerA.956B2957
CAT-QuickHeal	Trojan.MsilFC.S6051223
ClamAV	Win.Packed.Razy-6847895-0
Comodo	Malware@#1gvatd7703tvn
CrowdStrike	win/malicious_confidence_100% (D)
Cybereason	malicious.b95e1d
Cylance	Unsafe
DrWeb	BackDoor.Orcus.13
Emsisoft	Generic.MSIL.PasswordStealerA.956B2957 (B)
Endgame	malicious (high confidence)
ESET-NOD32	a variant of MSIL/Orcusrat.D
F-Secure	Heuristic.HEUR/AGEN.1013795
FireEye	Generic.mg.3bcba91b95e1de26
Fortinet	MSIL/Generic.AP.F529E!tr
GData	MSIL.Backdoor.Orcus.A
Ikarus	Trojan.MSIL.Agent
Invincea	heuristic
K7AntiVirus	Trojan ( 005011a81 )
K7GW	Trojan ( 005011a81 )
Kaspersky	HEUR:Trojan-Spy.MSIL.Generic
Malwarebytes	Backdoor.Orcus
MAX	malware (ai score=100)
MaxSecure	Trojan.Malware.11205094.susgen
McAfee	BackDoor-FDJE!3BCBA91B95E1
McAfee-GW-Edition	BackDoor-FDJE!3BCBA91B95E1
Microsoft	Backdoor:MSIL/Orcus.A!bit
MicroWorld-eScan	Generic.MSIL.PasswordStealerA.956B2957
NANO-Antivirus	Trojan.Win32.Orcus.ffvbtg
Paloalto	generic.ml
Panda	Trj/CI.A
Qihoo-360	Win32/Trojan.Spy.c29
Rising	Trojan.Agent!8.B1E (CLOUD)
SentinelOne	DFI - Malicious PE
Sophos	Troj/Orcusrot-A
Symantec	ML.Attribute.HighConfidence
Tencent	Msil.Trojan-spy.Generic.Lnot
Trapmine	malicious.high.ml.score
TrendMicro	BKDR_ORCUSRAT.SM
TrendMicro-HouseCall	BKDR_ORCUSRAT.SM
VBA32	TScope.Trojan.MSIL
Yandex	Trojan.Agent!kAU9Oy0kS9c
ZoneAlarm	HEUR:Trojan-Spy.MSIL.Generic

52 of the 71 anti-virus programs detected the Orcus.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_opened": [
        "C:\\Windows\\Microsoft.NET\\Framework64\\v2.0.50727\\",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin"
    ],
    "regkey_opened": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
        "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\standards\\v4.0.30319",
        "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\v2.0",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\standards",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\AppPatch"
    ],
    "file_exists": [
        "C:\\Windows\\System32\\MSCOREE.DLL.local"
    ],
    "file_failed": [
        "C:\\Windows\\Microsoft.NET\\Framework64\\Upgrades.2.0.50727\\",
        "C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\",
        "C:\\Users\\cuck\\AppData\\Local\\Temp\\c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin.config"
    ],
    "regkey_read": [
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\OnlyUseLatestCLR",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\NoGuiFromShim",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\CLRLoadLogDir",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\InstallRoot",
        "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
    ]
}

Generic

[
    {
        "process_path": "C:\\Windows\\System32\\lsass.exe",
        "process_name": "lsass.exe",
        "pid": 476,
        "summary": {},
        "first_seen": 1560919985.375,
        "ppid": 376
    },
    {
        "process_path": "C:\\Users\\cuck\\AppData\\Local\\Temp\\c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin",
        "process_name": "c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin",
        "pid": 2660,
        "summary": {
            "dll_loaded": [
                "ADVAPI32.dll",
                "SHLWAPI.dll",
                "C:\\Windows\\system32\\IMM32.DLL",
                "gdi32.dll"
            ],
            "file_opened": [
                "C:\\Windows\\Microsoft.NET\\Framework64\\v2.0.50727\\",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin"
            ],
            "regkey_opened": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\Standards",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework\\Policy\\Upgrades",
                "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\.NETFramework\\Policy\\",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\standards\\v4.0.30319",
                "HKEY_CURRENT_USER\\Software\\Microsoft\\.NETFramework",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\v2.0",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\standards",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\Policy\\AppPatch"
            ],
            "file_exists": [
                "C:\\Windows\\System32\\MSCOREE.DLL.local"
            ],
            "file_failed": [
                "C:\\Windows\\Microsoft.NET\\Framework64\\Upgrades.2.0.50727\\",
                "C:\\Windows\\Microsoft.NET\\Framework64\\v4.0.30319\\",
                "C:\\Users\\cuck\\AppData\\Local\\Temp\\c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de.bin.config"
            ],
            "regkey_read": [
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\OnlyUseLatestCLR",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Windows\\LoadAppInit_DLLs",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\NoGuiFromShim",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\CLRLoadLogDir",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\.NETFramework\\InstallRoot",
                "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\GRE_Initialize\\DisableMetaFiles"
            ]
        },
        "first_seen": 1560919985.5625,
        "ppid": 1624
    }
]

Signatures

[
    {
        "markcount": 3,
        "families": [],
        "description": "The binary likely contains encrypted or compressed data indicative of a packer",
        "severity": 2,
        "marks": [
            {
                "entropy": 7.1617111865893,
                "section": {
                    "size_of_data": "0x000e5600",
                    "virtual_address": "0x00002000",
                    "entropy": 7.1617111865893,
                    "name": ".text",
                    "virtual_size": "0x000e5404"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            },
            {
                "entropy": 7.696634354835,
                "section": {
                    "size_of_data": "0x00017a00",
                    "virtual_address": "0x000e8000",
                    "entropy": 7.696634354835,
                    "name": ".rsrc",
                    "virtual_size": "0x0001790c"
                },
                "type": "generic",
                "description": "A section with a high entropy has been found"
            },
            {
                "entropy": 0.99950617283951,
                "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": 546,
            "time": 3.0788309574127,
            "dport": 137,
            "sport": 137
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2018,
            "time": 3.021283864975,
            "dport": 5355,
            "sport": 51001
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2346,
            "time": 1.0209038257599,
            "dport": 5355,
            "sport": 53595
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 2674,
            "time": 3.0422508716583,
            "dport": 5355,
            "sport": 53848
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3002,
            "time": 1.6591379642487,
            "dport": 5355,
            "sport": 54255
        },
        {
            "src": "192.168.56.101",
            "dst": "224.0.0.252",
            "offset": 3330,
            "time": -0.10442113876343,
            "dport": 5355,
            "sport": 55314
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 3658,
            "time": 1.5637249946594,
            "dport": 1900,
            "sport": 1900
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 6986,
            "time": 1.0542678833008,
            "dport": 3702,
            "sport": 49152
        },
        {
            "src": "192.168.56.101",
            "dst": "239.255.255.250",
            "offset": 11178,
            "time": 3.1093809604645,
            "dport": 1900,
            "sport": 53598
        }
    ],
    "dns_servers": [],
    "http": [],
    "icmp": [],
    "smtp": [],
    "tcp": [],
    "smtp_ex": [],
    "mitm": [],
    "hosts": [],
    "pcap_sha256": "d450d8bccd7b688197000ef2b7ce900ef675c8692c05a061313005449613622e",
    "dns": [],
    "http_ex": [],
    "domains": [],
    "dead_hosts": [],
    "sorted_pcap_sha256": "4c7c7efe17a0a61f528a6e74b2f0a5733658e8309bb492acc9e80b083430d261",
    "irc": [],
    "https_ex": []
}

Screenshots

Orcus.exe removal instructions

The instructions below shows how to remove Orcus.exe with help from the FreeFixer removal tool. Basically, you install FreeFixer, scan your computer, check the Orcus.exe file for removal, restart your computer and scan it again to verify that Orcus.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 Orcus.exe in the scan result and tick the checkbox next to the Orcus.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 Orcus.exe in the scan result.

C:\Program Files\Orcus\Orcus.exe
Scroll down to the bottom of the scan result and press the Fix button. FreeFixer will now delete the Orcus.exe file.
Restart your computer.
Start FreeFixer and scan your computer again. If Orcus.exe still remains in the scan result, proceed with the next step. If Orcus.exe is gone from the scan result you're done.
If Orcus.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 Orcus.exe no longer appear in the scan result.

Free Questionnaires

Other files also named Orcus.exe

Orcus.exe (7 votes)

Hashes [?]

Property	Value
MD5	3bcba91b95e1de263915d86519a81d38
SHA256	c2c16f69840c5ca143def4ad8f028276c7f58dff0048a220c228135c72ef33de

Error Messages

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

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

orcus.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.

Microsoft Windows Defender has stopped working.

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

orcus.exe is not a valid Win32 application.

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

What will you do with Orcus.exe?

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

No comments posted yet.

What is Orcus.exe?

Vendor and version information [?]

Digital signatures [?]

VirusTotal report

Sandbox Report

Summary

Summary

Generic

Signatures

Yara

Network

Screenshots

Orcus.exe removal instructions

Other files also named Orcus.exe

Hashes [?]

Error Messages

What will you do with Orcus.exe?

Comments

Leave a reply