Analysis
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max time kernel
150s -
max time network
132s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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 1 IoCs
resource yara_rule behavioral1/files/0x000800000001658a-42.dat family_orcus -
Orcurs Rat Executable 2 IoCs
resource yara_rule behavioral1/files/0x000800000001658a-42.dat orcus behavioral1/memory/2288-45-0x0000000000DC0000-0x0000000000EAA000-memory.dmp orcus -
Executes dropped EXE 6 IoCs
pid Process 2744 WindowsInput.exe 2804 WindowsInput.exe 2288 Orcus.exe 2732 Orcus.exe 2872 OrcusWatchdog.exe 1860 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\Orcus = "\"C:\\Program Files\\Orcus\\Orcus.exe\"" Orcus.exe -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\WindowsInput.InstallState WindowsInput.exe File created C:\Windows\SysWOW64\WindowsInput.exe file.exe File created C:\Windows\SysWOW64\WindowsInput.exe.config 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 -
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 1860 OrcusWatchdog.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 2288 Orcus.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe 2288 Orcus.exe 1860 OrcusWatchdog.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2288 Orcus.exe Token: SeDebugPrivilege 2872 OrcusWatchdog.exe Token: SeDebugPrivilege 1860 OrcusWatchdog.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2288 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2288 Orcus.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1516 wrote to memory of 2100 1516 file.exe 28 PID 1516 wrote to memory of 2100 1516 file.exe 28 PID 1516 wrote to memory of 2100 1516 file.exe 28 PID 2100 wrote to memory of 2764 2100 csc.exe 30 PID 2100 wrote to memory of 2764 2100 csc.exe 30 PID 2100 wrote to memory of 2764 2100 csc.exe 30 PID 1516 wrote to memory of 2744 1516 file.exe 31 PID 1516 wrote to memory of 2744 1516 file.exe 31 PID 1516 wrote to memory of 2744 1516 file.exe 31 PID 1516 wrote to memory of 2288 1516 file.exe 33 PID 1516 wrote to memory of 2288 1516 file.exe 33 PID 1516 wrote to memory of 2288 1516 file.exe 33 PID 1600 wrote to memory of 2732 1600 taskeng.exe 35 PID 1600 wrote to memory of 2732 1600 taskeng.exe 35 PID 1600 wrote to memory of 2732 1600 taskeng.exe 35 PID 2288 wrote to memory of 2872 2288 Orcus.exe 36 PID 2288 wrote to memory of 2872 2288 Orcus.exe 36 PID 2288 wrote to memory of 2872 2288 Orcus.exe 36 PID 2288 wrote to memory of 2872 2288 Orcus.exe 36 PID 2872 wrote to memory of 1860 2872 OrcusWatchdog.exe 37 PID 2872 wrote to memory of 1860 2872 OrcusWatchdog.exe 37 PID 2872 wrote to memory of 1860 2872 OrcusWatchdog.exe 37 PID 2872 wrote to memory of 1860 2872 OrcusWatchdog.exe 37 -
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⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1516 -
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\tvghrsus.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:2100 -
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\RES4A2B.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC4A1A.tmp"3⤵PID:2764
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:2744
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"2⤵
- 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:2288 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 22883⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2872 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 22884⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1860
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:2804
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C:\Windows\system32\taskeng.exetaskeng.exe {BA5A95B8-3CC2-44CA-84FD-37BB0CADBA5E} S-1-5-21-1603059206-2004189698-4139800220-1000:AILVMYUM\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1600 -
C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"2⤵
- Executes dropped EXE
PID:2732
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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
65KB
MD5ac05d27423a85adc1622c714f2cb6184
SHA1b0fe2b1abddb97837ea0195be70ab2ff14d43198
SHA256c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d
SHA5126d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d
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Filesize
1KB
MD5de153a3c129ee9d436dd6d703e23ffbb
SHA11ec85e3634533f2d8638cf1989d2cbfab2a0dd99
SHA256f7140ac1f77e36f3c1bfabb82e36d2079042c2d47ffd4b3ab3b8defcfc90620c
SHA512feb96f6bd58f8a567b84a27632c2b6e0123a09834ea96aae3ed1a473323d13ccb72231654d5ab3fbeab77b78f860a40ce043424022cd16a7f3573a446aa6b4ba
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Filesize
76KB
MD5e8f545bc8bd70bf73ea5bb685cc9c403
SHA1f2baf3264d4a38a5b2ca7cb58781edbab0ff5e67
SHA256fa2cb3f1b5daa335c3350dc2aba8f8ea26828b28e33fd22b6d31325cb294e97f
SHA512ff45225c67c71755179046432c6bf901a41186674fbde0e7b0d198a8b9644804d623f61e27dc46d36ab9d698be8774c04a0cbd17561ee2b79597d086afe10989
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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
MD5f33962d7d09d8b2789bbd6977c34a784
SHA1b421d2b8a132f396c15591889420ded0d4746c41
SHA2567875ffca7f7fc56cdd2e1667b6c0726689589644e8c802d58dd3b225669a4f71
SHA51210591f62aa756536814186351c5eccc1beba2b8f411b10b5e2d013721231902b43605b0ff56ae7ff3250b4e1c911a514e08ed68a4cab49388cf33640c031c3f9
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Filesize
208KB
MD5c555d9796194c1d9a1310a05a2264e08
SHA182641fc4938680519c3b2e925e05e1001cbd71d7
SHA256ccbb8fd27ab2f27fbbd871793886ff52ff1fbd9117c98b8d190c1a96b67e498a
SHA5120b85ca22878998c7697c589739905b218f9b264a32c8f99a9f9dd73d0687a5de46cc7e851697ee16424baf94d301e411648aa2d061ac149a6d2e06b085e07090
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Filesize
349B
MD5d1ab971daae1b254d1c48eeadf7c71ad
SHA10fcfbca2a0801d1439369b6672c30f8495d1240e
SHA25642ab5f3a5bfe45ae90a34df0ad97559320cde29acd0b18889547f4ebebcb46ce
SHA5124e1bb31e08321ab20d734a78fa411f0a762428d48d21731331ed7a30d30507b2eba986194de412f581206f90602e0991790e3cbeca40a16828aea2ba9ef7a97e