Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
04-02-2024 20:17
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10-20231215-en
Behavioral task
behavioral3
Sample
file.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral4
Sample
file.exe
Resource
win11-20231222-en
General
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Target
file.exe
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Size
916KB
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MD5
bdbe50403b411db0e07511e098bdb9ff
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SHA1
5772743e950c1c647a5cab202fc3cc29039e2749
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SHA256
a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284
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SHA512
9531b3c7572f07aaac342635369732b77c1df58c262e32b21327cd2ac47afe6e3042d79a6a72e30c07b03e420cd9b47b1781bc5ed875b8d7b973b480090261f9
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SSDEEP
24576:+cI4MROxnFD3jEsYxrZlI0AilFEvxHiH0h9:+crMiJWrZlI0AilFEvxHi
Malware Config
Extracted
orcus
obfuscated.us:8080
0133d229c4e24006957c0e4ab3a52531
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autostart_method
Registry
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enable_keylogger
false
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install_path
%programfiles%\Orcus\Orcus.exe
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reconnect_delay
10000
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registry_keyname
Orcus
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taskscheduler_taskname
Orcus
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watchdog_path
AppData\OrcusWatchdog.exe
Signatures
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Orcus main payload 1 IoCs
resource yara_rule behavioral3/files/0x0007000000023112-57.dat family_orcus -
Orcurs Rat Executable 2 IoCs
resource yara_rule behavioral3/files/0x0007000000023112-57.dat orcus behavioral3/memory/2592-69-0x0000000000EC0000-0x0000000000FAA000-memory.dmp orcus -
Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation Orcus.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation OrcusWatchdog.exe -
Executes dropped EXE 6 IoCs
pid Process 4900 WindowsInput.exe 3568 WindowsInput.exe 2592 Orcus.exe 4996 Orcus.exe 3268 OrcusWatchdog.exe 2920 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Orcus = "\"C:\\Program Files\\Orcus\\Orcus.exe\"" Orcus.exe -
Drops desktop.ini file(s) 2 IoCs
description ioc Process File created C:\Windows\assembly\Desktop.ini file.exe File opened for modification C:\Windows\assembly\Desktop.ini file.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\WindowsInput.exe.config file.exe File created C:\Windows\SysWOW64\WindowsInput.InstallState WindowsInput.exe File created C:\Windows\SysWOW64\WindowsInput.exe file.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files\Orcus\Orcus.exe file.exe File opened for modification C:\Program Files\Orcus\Orcus.exe file.exe File created C:\Program Files\Orcus\Orcus.exe.config file.exe -
Drops file in Windows directory 3 IoCs
description ioc Process File opened for modification C:\Windows\assembly file.exe File created C:\Windows\assembly\Desktop.ini file.exe File opened for modification C:\Windows\assembly\Desktop.ini file.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe 2592 Orcus.exe 2920 OrcusWatchdog.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2592 Orcus.exe Token: SeDebugPrivilege 3268 OrcusWatchdog.exe Token: SeDebugPrivilege 2920 OrcusWatchdog.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2592 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2592 Orcus.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 324 wrote to memory of 1632 324 file.exe 82 PID 324 wrote to memory of 1632 324 file.exe 82 PID 1632 wrote to memory of 4172 1632 csc.exe 84 PID 1632 wrote to memory of 4172 1632 csc.exe 84 PID 324 wrote to memory of 4900 324 file.exe 85 PID 324 wrote to memory of 4900 324 file.exe 85 PID 324 wrote to memory of 2592 324 file.exe 89 PID 324 wrote to memory of 2592 324 file.exe 89 PID 2592 wrote to memory of 3268 2592 Orcus.exe 93 PID 2592 wrote to memory of 3268 2592 Orcus.exe 93 PID 2592 wrote to memory of 3268 2592 Orcus.exe 93 PID 3268 wrote to memory of 2920 3268 OrcusWatchdog.exe 97 PID 3268 wrote to memory of 2920 3268 OrcusWatchdog.exe 97 PID 3268 wrote to memory of 2920 3268 OrcusWatchdog.exe 97 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in System32 directory
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:324 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe"C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\m4ywvehs.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:1632 -
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exeC:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC332.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCC321.tmp"3⤵PID:4172
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:4900
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:2592 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 25923⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3268 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 25924⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2920
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:3568
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
PID:4996
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
916KB
MD5bdbe50403b411db0e07511e098bdb9ff
SHA15772743e950c1c647a5cab202fc3cc29039e2749
SHA256a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284
SHA5129531b3c7572f07aaac342635369732b77c1df58c262e32b21327cd2ac47afe6e3042d79a6a72e30c07b03e420cd9b47b1781bc5ed875b8d7b973b480090261f9
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Filesize
1KB
MD5cb99c0944ec7c4a22942056d69d59229
SHA175a878aaec47ab5b8faf3f73112b2677e073a596
SHA256800f20caf4a04820be4b8c30353be05e0af819b8f911644b871e266fa72f8f70
SHA51229b31af8c042baa8ba01316b683c0c9a62647a5e0963913aff55d590a63c7475e175346ec42405a18afabf36cc11921a0618a9743c39c4caddc4faff5d51e74b
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Filesize
76KB
MD5cd633ddfc0059d959889f0250f0db034
SHA1a8ba6369c216465315031143f342ee3d7e5b4646
SHA2568f08e98b35ed765f35d3af8bbcb18bc5afb7b141c732128477586a5e8226d362
SHA51211e7f1d48c9f7f4d837864576ca019f74ef245b3e1169b52a22492d9ac7e5d0c0e1c23edfcaafe7e512b51a170bf2e2c07cda595b6db7c74dcb30157e7d517c9
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Filesize
9KB
MD5913967b216326e36a08010fb70f9dba3
SHA17b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf
SHA2568d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a
SHA512c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33
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Filesize
21KB
MD5e6fcf516d8ed8d0d4427f86e08d0d435
SHA1c7691731583ab7890086635cb7f3e4c22ca5e409
SHA2568dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337
SHA512c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e
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Filesize
357B
MD5a2b76cea3a59fa9af5ea21ff68139c98
SHA135d76475e6a54c168f536e30206578babff58274
SHA256f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839
SHA512b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad
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Filesize
676B
MD5f26b22f7875178240598501df9d070e9
SHA15107fec4e5b77b439d5ca6107888aaa0e6137fcf
SHA25675a2c744872699358cc5cdd49770f8e48c5f300b3037ee0a700a182de8fd715f
SHA5128f0813d1d78a3ef543ee99a118ea1278297d79a103f6eaf8ea73431869b618afffee6e63072e9e9c68ea58c4275ddc33c7c5d1a1eb6825712399968ed4973633
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Filesize
208KB
MD5486ddbcee88dbec70780d0faba2a2650
SHA17938cacb06db6ff68183e527a4e4d756ded33782
SHA2560115db5d7f9dc999644a204ac269e64cc2d440f52e0fec3709edf19520d1fad5
SHA51249e2c299b82f54d247f46f21e373315dd0cf3677aa56a512e2fbdd659a1b47f8b2ee7e0fea86c8a75ae1380eadaa8ab9b3553ba8868da2a3f06a7d3e1ce417bd
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Filesize
349B
MD5a6c9750805ebb61abbb42b98b3c9d94c
SHA1a818e2f631e283e520797cf43c8f0d739fa8878c
SHA2566247ae294b0d5fd08ca2e193a271e9c06a3ce48c7fcdbcc8a47fa6ce41b5d86f
SHA51294094ba6ef3d56ebc34c7ff24bfd8b4f20d4c70a7b35f8c70a54692c5c38ca009a4bdb3e4594e9f4ae1a67176978cbd42761792b4dc29d454c56fcde95b339fd