Analysis
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max time kernel
150s -
max time network
152s -
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 20:19
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231215-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 3 IoCs
resource yara_rule behavioral2/files/0x00070000000231fe-63.dat family_orcus behavioral2/files/0x00070000000231fe-57.dat family_orcus behavioral2/files/0x00070000000231fe-73.dat family_orcus -
Orcurs Rat Executable 4 IoCs
resource yara_rule behavioral2/files/0x00070000000231fe-63.dat orcus behavioral2/files/0x00070000000231fe-57.dat orcus behavioral2/memory/2372-69-0x00000000003C0000-0x00000000004AA000-memory.dmp orcus behavioral2/files/0x00070000000231fe-73.dat 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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation Orcus.exe Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation OrcusWatchdog.exe -
Executes dropped EXE 6 IoCs
pid Process 5116 WindowsInput.exe 1616 WindowsInput.exe 2372 Orcus.exe 2004 Orcus.exe 540 OrcusWatchdog.exe 4648 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\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 file.exe File created C:\Windows\SysWOW64\WindowsInput.exe.config file.exe File created C:\Windows\SysWOW64\WindowsInput.InstallState WindowsInput.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files\Orcus\Orcus.exe.config file.exe File created C:\Program Files\Orcus\Orcus.exe file.exe File opened for modification C:\Program Files\Orcus\Orcus.exe 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 2372 Orcus.exe 2372 Orcus.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 4648 OrcusWatchdog.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe 2372 Orcus.exe 4648 OrcusWatchdog.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2372 Orcus.exe Token: SeDebugPrivilege 540 OrcusWatchdog.exe Token: SeDebugPrivilege 4648 OrcusWatchdog.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2372 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2372 Orcus.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 3744 wrote to memory of 4772 3744 file.exe 84 PID 3744 wrote to memory of 4772 3744 file.exe 84 PID 4772 wrote to memory of 664 4772 csc.exe 86 PID 4772 wrote to memory of 664 4772 csc.exe 86 PID 3744 wrote to memory of 5116 3744 file.exe 89 PID 3744 wrote to memory of 5116 3744 file.exe 89 PID 3744 wrote to memory of 2372 3744 file.exe 93 PID 3744 wrote to memory of 2372 3744 file.exe 93 PID 2372 wrote to memory of 540 2372 Orcus.exe 96 PID 2372 wrote to memory of 540 2372 Orcus.exe 96 PID 2372 wrote to memory of 540 2372 Orcus.exe 96 PID 540 wrote to memory of 4648 540 OrcusWatchdog.exe 97 PID 540 wrote to memory of 4648 540 OrcusWatchdog.exe 97 PID 540 wrote to memory of 4648 540 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:3744 -
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\umfnrdg7.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:4772 -
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\RES7D3F.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC7D3E.tmp"3⤵PID:664
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:5116
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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:2372 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 23723⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:540 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 23724⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4648
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:1616
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
PID:2004
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
775KB
MD5e440c9eb6f599e32731c1041e46e1b2d
SHA1af9504357fa725b74c60e4010a2cc2dc27a2c6b2
SHA25621dee025982cb03535920e3ec5e58de19598f21483a900683bc2da120cec341e
SHA512f94a39a5e2cc8aa1f0f5654239731c68c8fef399d2898a5559e656d7910ada039fa93ae60a2bfa29070e8fda346f58a5445e9ce3da928a7d9d433bf88f918729
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Filesize
251KB
MD5f5784842fb6db8efbf402070ed502136
SHA10c6a5b127181e80ea09690d73743325121bb461b
SHA2563ef3b29ba7846d3738a91a4807f67dbb2d8f0b6904629cc3c2bee9a1013c47f7
SHA51268dc1a1a443893bf4a5783329f8eb104a4049f77145c36f4f611850aaf802c35faefbd428e2d50b8688f42b78a216aa222ef44183db775dd16de5b68fd209c65
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Filesize
425B
MD54eaca4566b22b01cd3bc115b9b0b2196
SHA1e743e0792c19f71740416e7b3c061d9f1336bf94
SHA25634ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
SHA512bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1
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Filesize
1KB
MD50c3d928d9f958517b73e9247fbf495c0
SHA1eedde51313770d12c75793a2d83833a51e6151ee
SHA256cfcdde7b03f9d60b54e0e835cf7434faef46152503203041f03dd7d7f2e15f87
SHA512db2af6d9527429cc08f61b8de7a9db1749b18619d5a819bd1208cd459c4de29ca5844bf7e73e51fab9be350d4555e968caded48fd240d44b677377300bdb66f8
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Filesize
76KB
MD5f8fc48f7c5b8cac638349d10f84ee57e
SHA111a620aa28e9aad544c2ccca7b4f5bad8f2b2ce1
SHA25674d8441c80405cbb16e22e6c335f3c9eabfef35d06256b8c097dab11e12b6d1f
SHA5123b6890b47ad9ddc7916f7d0a5bed234089a04ca1569a1533bd057c742591b232d4b49f02b5c1ad5a0e76d3ab7743a083be9dae15ea09a1ec6cf98e61fb0dd383
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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
MD5d876ab0572a3270ff3c5d369ee9942ab
SHA1441d712ceb41197e83517c0e7b0e65beee1e3266
SHA25653218e85775d8d7de4a267f7ae467020cdb9324e567bde1c58f467ad9787bccd
SHA5120d689c0b10098c90aef286e1ef3de7640568ad7c4ac64a888a2de49392ec8de3fa3998c5ebd7149cfaf02e8991385734e233debad2113cbe46e7901fb4a1d603
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Filesize
208KB
MD5032e0be34c354148b745fdfdc93ce7b6
SHA14f200e07a14baf38a67a946cc018a69bc423f2e9
SHA2568032dccdba7fe3fd366554bf4da1be8dcbf3f002f7f54d67df59018d129b36f5
SHA512f188827bd4ed2855e1fac63f535a45858b76386d5cd233e7725e6f9df8e0ef9fdeea35dd7e7241f42e4549fdd239cd939bed82ad001377cd8d97be0b3f48dc00
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Filesize
349B
MD54476e12ba73393f4c5740ea6200989fb
SHA1f56a9ce1f02e7606a37b3156f4f1f76ca02869fa
SHA256193d55db8f819c6eff33fd8e5f8d286e99aea4f471a0881e1042569f384595a7
SHA5127a4135f745751cd3ef6e6ad762676d890859af132819cb07b321b32c11bbff75617798e266b0ef08598b8e2bd24d31ed61a14bbbb9f330951f2510f21e96e649