Analysis
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max time kernel
149s -
max time network
131s -
platform
windows10-1703_x64 -
resource
win10-20231220-en -
resource tags
arch:x64arch:x86image:win10-20231220-enlocale:en-usos:windows10-1703-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 3 IoCs
resource yara_rule behavioral2/files/0x000700000001aba0-54.dat family_orcus behavioral2/files/0x000700000001aba0-52.dat family_orcus behavioral2/files/0x000700000001aba0-61.dat family_orcus -
Orcurs Rat Executable 4 IoCs
resource yara_rule behavioral2/memory/4488-55-0x0000000000B90000-0x0000000000C7A000-memory.dmp orcus behavioral2/files/0x000700000001aba0-54.dat orcus behavioral2/files/0x000700000001aba0-52.dat orcus behavioral2/files/0x000700000001aba0-61.dat orcus -
Executes dropped EXE 6 IoCs
pid Process 4440 WindowsInput.exe 3764 WindowsInput.exe 4488 Orcus.exe 1876 Orcus.exe 1364 OrcusWatchdog.exe 1608 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3934047325-4097474570-3437169968-1000\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 opened for modification C:\Program Files\Orcus\Orcus.exe file.exe File created C:\Program Files\Orcus\Orcus.exe.config file.exe File created 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 1608 OrcusWatchdog.exe 1608 OrcusWatchdog.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 4488 Orcus.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe 1608 OrcusWatchdog.exe 4488 Orcus.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 4488 Orcus.exe Token: SeDebugPrivilege 1364 OrcusWatchdog.exe Token: SeDebugPrivilege 1608 OrcusWatchdog.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4488 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 4488 Orcus.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 652 wrote to memory of 4724 652 file.exe 73 PID 652 wrote to memory of 4724 652 file.exe 73 PID 4724 wrote to memory of 2004 4724 csc.exe 75 PID 4724 wrote to memory of 2004 4724 csc.exe 75 PID 652 wrote to memory of 4440 652 file.exe 76 PID 652 wrote to memory of 4440 652 file.exe 76 PID 652 wrote to memory of 4488 652 file.exe 78 PID 652 wrote to memory of 4488 652 file.exe 78 PID 4488 wrote to memory of 1364 4488 Orcus.exe 79 PID 4488 wrote to memory of 1364 4488 Orcus.exe 79 PID 4488 wrote to memory of 1364 4488 Orcus.exe 79 PID 1364 wrote to memory of 1608 1364 OrcusWatchdog.exe 81 PID 1364 wrote to memory of 1608 1364 OrcusWatchdog.exe 81 PID 1364 wrote to memory of 1608 1364 OrcusWatchdog.exe 81 -
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 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:652 -
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\0w64no2w.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:4724 -
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\RES72FE.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC72FD.tmp"3⤵PID:2004
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:4440
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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:4488 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 44883⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1364 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 44884⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1608
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:3764
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
PID:1876
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
252KB
MD532f505b5c4698d7c12cea203932da956
SHA1c7d333abd546d32793acdee9fea0372a5615462a
SHA256bc830a82b052ba7e8168a4fa13be71270911fc152f7626277bb9cfca8e80c00a
SHA5129c8c75336aa90e59bb906d737a78c22996c512f5906f5f057963f44126cf449cc037b56937175ce969580aacbbc1313863bfc036670efd794823f952def64319
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Filesize
230KB
MD559b8b5ecb53f10e71b44d71892cfa5f6
SHA11887146baaffa64c9dae672d616054b56ff10524
SHA256be37e496f05537c59dda7f614cdaa6e64128f0f0278fcddf242e897879140649
SHA512be0be78a8425b2c35cb59daa0f868f54f7ecb1ca87066873c7f206ffba00eb60a6c094024b1698f99f85f700f52319b53d42e9659692a6bc46deebee702e9cab
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Filesize
176KB
MD5ef91594b08b4edcad2067c33449ca995
SHA1cbca038ba58db9d3c60b0f3fc5da13f25aa09ec3
SHA256e109f7f574ac2b6538186d21531e7d1272115c2bf5597530d2357c94a2e4b7c9
SHA512cdf8476f884a3f690fbead42034aa0e066b85d58bcd63f144911104e0d7de3f4f91db4920e67c0fdceed90325e5b6d0cb1861a10439cd0fef8ca5083c030db3a
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Filesize
76KB
MD5eab12e20808c50923c049a941e0fa6d0
SHA1594649c456f0c02cf8a5d58a7959fc28f35cc773
SHA2567347601cd7078684c2cd931d76e97d03ee315f442294a3c4ac7852f519978f00
SHA512046f10b29f04fa549fffbf310b2f1c6c2aa92314e90587c76a8c916d5ccb9ef7a1060c1d7479a4558931acdc68f9ddba1255ebd8c040b0c8d37abb4bf0a5de52
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Filesize
1KB
MD5f0d1cc05e3e193d5040816cc359c5d73
SHA15a4ec8a67e69b1d4d144a7dc9100c30d7eddfc1b
SHA2563cf89bb0566ef2f5643ee7bb9d48471b31611bc1e709f74f8878f3dd4186af19
SHA512291bac402d388c3c0d17bc8a0406725152624efcdf23fee9ebf80460da746ed90ec57f748e1138c8a4fd433c79a33c3ef1f60508a582b6e4f1a1c20c6773c0f7
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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
MD52f26a3e125b54e8a003eef10de7a0665
SHA1e1c1d9b14d91b461146b5bed98b880083123ca4b
SHA2562770c8786e5c82f31683c4f5e78393f9a369497e53aa0018b2f26a5d7616f110
SHA512ac8439eaf1e16c51e5b0a5f1668b40cb2e011e172eccceb3825f3a3c018200c82e33d3a67c4974fae9bcbbcab161772172fa14a122aadf89be9cef6ac2876723
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Filesize
349B
MD51383ca7a34518ec7c77a6b1da4d515b4
SHA1dcedd5c0e4fcef86aa2c4a73544692d9c1828646
SHA2562a63506f17d111d010ca24333890004be5243c8afc9d1b65ca40e871bce86594
SHA512fa3a4fa7915dbc0d19830b6c6b84c56a355df8208c1eca12343a0ba662175c95cba0a25eca62d67092dd347732d108868d8fd50a15a025e38619b26c8f8b2a33
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Filesize
676B
MD52bc7bdb989b2d845ae89bdde495da117
SHA11ffb95e35c8289057e7af97b3cdec12da4e764fb
SHA2565103d09770638b76775fd632e36e79de141c14db8e35e5d52fe41cdfd2079d8d
SHA5123c844f67b28f915f6e3482c9c5c6589f876dfc56d3f6fd44f5e933a2509bce92d135b42905d513dc89d4fc429eb0533ac74695a825f7e3ec4333872570c48110