Analysis
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max time kernel
150s -
max time network
141s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
06-02-2024 03:19
Behavioral task
behavioral1
Sample
a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe
Resource
win10v2004-20231222-en
General
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Target
a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.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 behavioral1/files/0x000800000001565f-41.dat family_orcus behavioral1/files/0x000800000001565f-43.dat family_orcus behavioral1/files/0x000800000001565f-53.dat family_orcus -
Orcurs Rat Executable 4 IoCs
resource yara_rule behavioral1/files/0x000800000001565f-41.dat orcus behavioral1/memory/2636-44-0x00000000011C0000-0x00000000012AA000-memory.dmp orcus behavioral1/files/0x000800000001565f-43.dat orcus behavioral1/files/0x000800000001565f-53.dat orcus -
Executes dropped EXE 6 IoCs
pid Process 2704 WindowsInput.exe 2732 WindowsInput.exe 2636 Orcus.exe 1592 Orcus.exe 1556 OrcusWatchdog.exe 1792 OrcusWatchdog.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\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.exe a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe File created C:\Windows\SysWOW64\WindowsInput.exe.config a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.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 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe File created C:\Program Files\Orcus\Orcus.exe a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe File opened for modification C:\Program Files\Orcus\Orcus.exe a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.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 1792 OrcusWatchdog.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe 2636 Orcus.exe 1792 OrcusWatchdog.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1556 OrcusWatchdog.exe Token: SeDebugPrivilege 1792 OrcusWatchdog.exe Token: SeDebugPrivilege 2636 Orcus.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2636 Orcus.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 2636 Orcus.exe -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 1992 wrote to memory of 1208 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 29 PID 1992 wrote to memory of 1208 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 29 PID 1992 wrote to memory of 1208 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 29 PID 1208 wrote to memory of 2700 1208 csc.exe 30 PID 1208 wrote to memory of 2700 1208 csc.exe 30 PID 1208 wrote to memory of 2700 1208 csc.exe 30 PID 1992 wrote to memory of 2704 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 31 PID 1992 wrote to memory of 2704 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 31 PID 1992 wrote to memory of 2704 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 31 PID 1992 wrote to memory of 2636 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 33 PID 1992 wrote to memory of 2636 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 33 PID 1992 wrote to memory of 2636 1992 a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe 33 PID 2756 wrote to memory of 1592 2756 taskeng.exe 34 PID 2756 wrote to memory of 1592 2756 taskeng.exe 34 PID 2756 wrote to memory of 1592 2756 taskeng.exe 34 PID 2636 wrote to memory of 1556 2636 Orcus.exe 35 PID 2636 wrote to memory of 1556 2636 Orcus.exe 35 PID 2636 wrote to memory of 1556 2636 Orcus.exe 35 PID 2636 wrote to memory of 1556 2636 Orcus.exe 35 PID 1556 wrote to memory of 1792 1556 OrcusWatchdog.exe 36 PID 1556 wrote to memory of 1792 1556 OrcusWatchdog.exe 36 PID 1556 wrote to memory of 1792 1556 OrcusWatchdog.exe 36 PID 1556 wrote to memory of 1792 1556 OrcusWatchdog.exe 36 -
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\a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe"C:\Users\Admin\AppData\Local\Temp\a758763a7fb30398cbdab370be24c389a1927fb376772fcb31f4017ca942a284.exe"1⤵
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1992 -
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\v_rnwj6f.cmdline"2⤵
- Suspicious use of WriteProcessMemory
PID:1208 -
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\RESC61.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCC60.tmp"3⤵PID:2700
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:2704
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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:2636 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Program Files\Orcus\Orcus.exe" 26363⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1556 -
C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Program Files\Orcus\Orcus.exe" 26364⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1792
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:2732
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C:\Program Files\Orcus\Orcus.exe"C:\Program Files\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
PID:1592
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C:\Windows\system32\taskeng.exetaskeng.exe {6F003D09-5B03-4BF8-96DC-EF18B039EFD2} S-1-5-21-3818056530-936619650-3554021955-1000:SFVRQGEO\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2756
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD5c20bff1e83762cb5cf619bf222007ea9
SHA1791d8570ac2a74e49a3b011ff8264caecf703b61
SHA256e78e900bd574696060b63b27a233924d1491ec610f7ab3a209d09e2c2c733a7c
SHA512c12f144f662fa0575eb8a54056e401dda5ac467687002bf0daadeb4c06197a1260f85b84f82c1756d3b5bf7a670961d4ce966898af81b4ed3080ceb270e76caf
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Filesize
88KB
MD5c705999739ed0db21d95ea849bb2a6a7
SHA15616da9d06f8fd0b4f75d9a3ae155310dda152be
SHA256837e602008829475e9512f2da0d4a6c5f9cb161d0df6522a016f9f9697bc0fb4
SHA512bda3b74d3c3c70082e9da03a655ebc748e523861960f46c357fe5ced17560925923adadb66027db755571fc5f5c1be7334683afdcedc9db323f7d7b0097658fc
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Filesize
513KB
MD53b4c984843b0ba72431e3b3f12bee682
SHA18317ce08a460cc7750808d3ce6f9d7b898b73651
SHA256428e1c1668aa9cbeb5ecea55d36843cafad40d61b5fa5fb299a4b714601d211f
SHA5124bc52c52096519b32f49d30a62c14d6de7b36535c3c70a9515486f4de63301dd4af53ab7976086d073addc6c60c72bf3da7a755cdc0bf55558120826c620c9a6
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Filesize
1KB
MD5dba980306593c02a7c64edc4daf945e3
SHA127c167548d8c623b24095b08c66f56876354d0f5
SHA256f364ddcb471e44c8fc6cafafbedb2f2240a7f305b10e12cecb223631d13fb83a
SHA5128a0fbeccd0e2564886ff1c93cc1ac1dc695b04b5b9b2eb38afbeeba5368cb9e853915b167044fd862c5e3700d5f72cbc7782c831b466dc9a8e6f965b63fcfb3e
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Filesize
76KB
MD53aca15683e3c4eb8d1b6ea0a3d3d3631
SHA1aa34769ad93b0247aa3854e217e07c68e05b5111
SHA25654fcb2464172c14b1e6fe6cf893a118f120886c5c50790a5fe64c1fb8435c68a
SHA512fbd965906553a56769ca3e4dc4a7e9383241a6b3300be9e2d1e7be4615d893e807f6568cd04e068e2b82ac01aab15bf3fe5ca57098167b43cf1e9c39c903c29e
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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
MD57b686591ec1c6ade91b6792bd418c91c
SHA155a60b9a6000702d70132d6474944f281ae86359
SHA256fb2399a133544190d7f955f580d2d04943e89d761d9370f77fa503172c8f5be7
SHA512f07e2b61f9cee0a0e4b200df228c8dfd00745773ff3056acc10aad8d2ea163b9ea73af0f5a0e618c7f680522d7d817a455bed55950dcdb6c9f3de6c4be951b93
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Filesize
208KB
MD52b14ae8b54d216abf4d228493ceca44a
SHA1d134351498e4273e9d6391153e35416bc743adef
SHA2564e1cc3da1f7bf92773aae6cffa6d61bfc3e25aead3ad947f6215f93a053f346c
SHA5125761b605add10ae3ef80f3b8706c8241b4e8abe4ac3ce36b7be8a97d08b08da5a72fedd5e976b3c9e1c463613a943ebb5d323e6a075ef6c7c3b1abdc0d53ac05
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Filesize
349B
MD5fcb66f4cd88219d4470d9eb4189ca40b
SHA151e5302b1f9c629097ca43119ad3b5e4c156910c
SHA2562a84aba5aca929f0067ab7ef7a9c29af59d5487f5e82d8519b46c04c3e3a513a
SHA5128ba7b172c367d364e388c16bbd3e9fc9bd824305664387f740ed2992923273adec49d04b34b64c7107b51a2092551a38145d000df2b7cabae1cef3ff7d2a81a5