Analysis
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max time kernel
150s -
max time network
149s -
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
win10-20231220-en
Behavioral task
behavioral3
Sample
file.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral4
Sample
file.exe
Resource
win11-20231215-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 4 IoCs
resource yara_rule behavioral3/files/0x000800000002322d-66.dat family_orcus behavioral3/files/0x000800000002322d-73.dat family_orcus behavioral3/files/0x000800000002322d-63.dat family_orcus behavioral3/files/0x000800000002322d-57.dat family_orcus -
Orcurs Rat Executable 5 IoCs
resource yara_rule behavioral3/files/0x000800000002322d-66.dat orcus behavioral3/memory/3120-67-0x0000000000230000-0x000000000031A000-memory.dmp orcus behavioral3/files/0x000800000002322d-73.dat orcus behavioral3/files/0x000800000002322d-63.dat orcus behavioral3/files/0x000800000002322d-57.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation OrcusWatchdog.exe Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation Orcus.exe -
Executes dropped EXE 6 IoCs
pid Process 2012 WindowsInput.exe 2008 WindowsInput.exe 3120 Orcus.exe 3152 Orcus.exe 2940 OrcusWatchdog.exe 1760 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\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\Desktop.ini file.exe File opened for modification C:\Windows\assembly file.exe File created 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 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe 3120 Orcus.exe 1760 OrcusWatchdog.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 3120 Orcus.exe Token: SeDebugPrivilege 2940 OrcusWatchdog.exe Token: SeDebugPrivilege 1760 OrcusWatchdog.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3120 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 3120 Orcus.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 4160 wrote to memory of 3748 4160 file.exe 87 PID 4160 wrote to memory of 3748 4160 file.exe 87 PID 3748 wrote to memory of 2308 3748 csc.exe 89 PID 3748 wrote to memory of 2308 3748 csc.exe 89 PID 4160 wrote to memory of 2012 4160 file.exe 88 PID 4160 wrote to memory of 2012 4160 file.exe 88 PID 4160 wrote to memory of 3120 4160 file.exe 91 PID 4160 wrote to memory of 3120 4160 file.exe 91 PID 3120 wrote to memory of 2940 3120 Orcus.exe 93 PID 3120 wrote to memory of 2940 3120 Orcus.exe 93 PID 3120 wrote to memory of 2940 3120 Orcus.exe 93 PID 2940 wrote to memory of 1760 2940 OrcusWatchdog.exe 94 PID 2940 wrote to memory of 1760 2940 OrcusWatchdog.exe 94 PID 2940 wrote to memory of 1760 2940 OrcusWatchdog.exe 94 -
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:4160 -
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\5lhlun0o.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:3748 -
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\RES4DB3.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC4DB2.tmp"3⤵PID:2308
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:2012
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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:3120 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 31203⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 31204⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1760
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:2008
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
PID:3152
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
123KB
MD5ce3f7034563c490bccc6c2de62bfeaa5
SHA1eaf37815e57356f3738b389375242eeef6e62e99
SHA25636d4111303b09eb9e5f86d25fcbd7f5e5717b763da199315cc05f305fe9c62da
SHA51293ae4d76f0234fa3eb5e4f5c4935bd6d20896c27b560b9efa9fac2a768373c4b37f89346c586327cd7765d85700e54809201245dd73fc1f6d39d03931ab1cd8f
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Filesize
182KB
MD5d27820e8a8ef8ba8a4819a02d83e3747
SHA1db61b885eac771246b26e7a12a67ec348bb10e70
SHA2561b7083cb4e78821792aef28f1667b3f104de4efb6611301bf5f3db534ba08959
SHA5122c383e64d6b6d6876de7738e267fdd42d931ea417b9f14afb0cd0d009fa007de81af72289d0a7b17b1fc41afad18e6047d7788a2c4cb051f7562f4affef6eda2
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Filesize
85KB
MD517f3405c2a93ed6405423e35e10c6756
SHA191300933e6ecdbb5123c1e5820c03a21bab14781
SHA256d92774df195c75c7caa22906075e53bcca325686de50518ab00aeef3d928066c
SHA5120ca652dab3381acdb57456211727e46214059b827fb7a388dce7c51e4512dfd53da0fdfbb2fc287c5b037d648200b38018960dd20293e9f4628703fde54e6125
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Filesize
37KB
MD53bd85de5e14149af07514536ae2798be
SHA12df51c015d17f57bd5fe62c1ad87eb6b702df8e5
SHA256e1600a55935a63cdfd41762c8c4a7f186792359e00b6692da2274e255ee91deb
SHA51299573a80851520582ce09fd85b6ab336dffa1f637869f32ee4ef4c809a33c64a833dc06e05c1f4c00952032ceb5ee3f0f9ab50ebfc8cbb48903e59f068d3bdd3
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Filesize
425B
MD54eaca4566b22b01cd3bc115b9b0b2196
SHA1e743e0792c19f71740416e7b3c061d9f1336bf94
SHA25634ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
SHA512bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1
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Filesize
76KB
MD5d338849f33c4d8f4001909e038c3a2ff
SHA18b8ec6dd22cbd0038000d2af3f09a71079b3fd7b
SHA25625ec91954d7a37256bffbe9d3b192c9e99e2c4fc007bc235dd9b59abdf716d34
SHA51204a75139cc4cc0049e8d3aa9c6b7073cda49c6b9f96cf0b881b899f02dfe082671dad26eb1c5159dd2f6a8be057b65da71724e0affab4c8b7b9ea0ea107ac52e
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Filesize
1KB
MD59cdc91049a62eb0b0ca7d93d7e678d77
SHA1a8a0dcccdd3560a515971a5fce121665594148b0
SHA2567169942138765ed9e457f9fc335fdd6308b83649c75dddaa28671b0c604122e5
SHA51227b380ea8099a44ef755a0b48fbed2994096b52ca072918be79537939d025cd516573b31449dce35c3b7d4c0140478911829f1817dbef52731d766b7e50177da
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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
208KB
MD51c51133523657fb9797b5a3dcd86e292
SHA1fec53d42b1e142a57180b61cae1f80c2300f8407
SHA256985dffb1e6b644064ccac128a8590cbed6cbf119964ebe3d6a396c4cd68e54be
SHA512cafdec469dc6f5f7da4576404f9f03da2ed3b86282a80ca4dcd358d16e779bff096f298ed97e194a32a1a62402a4ad35ce2196a1f33dc470974767a02e2ccd6e
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Filesize
349B
MD5ee2a9c253688baa62dfb0bc9f617624f
SHA1ef378e6ffd13bbd95e644c6104825ccff677f9ff
SHA256ed8bfb5540760ccdaf1cd06d274549e13c684c2b851a619130dcf9a63ff860bd
SHA5124a8215a9a2ffbc3b2c59409c8db4d0d61aa804f7ddc0ed2071a1333323c10e58412f6da8500aaaa4965b1e9f26f85ad7b67b326353715a06924a17b37b0a8903
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Filesize
676B
MD537860063532ef5ea41ec9c89543c114d
SHA1789279fe9cf093174d6e837844deb578aa70bd55
SHA25602f55e3db8e6f553ef0054e485e224b7305e3c99a776614f49edba97cffd1664
SHA5121d7cf48df901b747b96ebad3d1ffe6c6721fece3889a212d2b35eed2d0e85d13566d6608718fef844ce3eacc716ced9f567dab17fff04f811c35a3cbf608e1da