Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
08-02-2024 16:02
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20231222-en
General
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Target
file.exe
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Size
914KB
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MD5
c6d06917e01beb93e4bad79537df2eb7
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SHA1
927d7c8e85f740e35161a5de831771160d81cb95
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SHA256
c4288fddf7805d6ecfe23adb3f4b687f69d6848d790d4abc672324581a1d0a73
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SHA512
082ba84dd4d1c1e7ba34077f5d3cacfdf02c2b904d7cdb73ed59269b734c802e817e18ece928c021a0e05c54b497da168dcd1a830148032dff3b19c354bab0cb
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SSDEEP
24576:eW64MROxnFD3orXYf1rrcI0AilFEvxHPtooX:eKMiJhrrcI0AilFEvxHP
Malware Config
Extracted
orcus
7.tcp.eu.ngrok.io:17912
0133d229c4e24006957c0e4ab3a52531
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autostart_method
Registry
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enable_keylogger
true
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install_path
%programfiles%\Win64\gcc.exe
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reconnect_delay
10000
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registry_keyname
System3222
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taskscheduler_taskname
System3222
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watchdog_path
AppData\Sys322.exe
Signatures
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Orcus main payload 1 IoCs
resource yara_rule behavioral2/files/0x0006000000023214-40.dat family_orcus -
Orcurs Rat Executable 2 IoCs
resource yara_rule behavioral2/memory/3232-0-0x0000000000A70000-0x0000000000B5A000-memory.dmp orcus behavioral2/files/0x0006000000023214-40.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation file.exe Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation gcc.exe Key value queried \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation Sys322.exe -
Executes dropped EXE 6 IoCs
pid Process 4976 WindowsInput.exe 2444 WindowsInput.exe 1216 gcc.exe 3672 gcc.exe 4544 Sys322.exe 4588 Sys322.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\System3222 = "\"C:\\Program Files (x86)\\Win64\\gcc.exe\"" gcc.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs
flow ioc 14 7.tcp.eu.ngrok.io 36 7.tcp.eu.ngrok.io 51 7.tcp.eu.ngrok.io -
Drops file in System32 directory 3 IoCs
description ioc Process File created C:\Windows\SysWOW64\WindowsInput.exe.config file.exe File created C:\Windows\SysWOW64\WindowsInput.InstallState WindowsInput.exe File created C:\Windows\SysWOW64\WindowsInput.exe file.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Win64\gcc.exe.config file.exe File created C:\Program Files (x86)\Win64\gcc.exe file.exe File opened for modification C:\Program Files (x86)\Win64\gcc.exe 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 4588 Sys322.exe 4588 Sys322.exe 4588 Sys322.exe 1216 gcc.exe 1216 gcc.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe 4588 Sys322.exe 1216 gcc.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 1216 gcc.exe Token: SeDebugPrivilege 4544 Sys322.exe Token: SeDebugPrivilege 4588 Sys322.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1216 gcc.exe -
Suspicious use of SendNotifyMessage 1 IoCs
pid Process 1216 gcc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1216 gcc.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3232 wrote to memory of 4976 3232 file.exe 83 PID 3232 wrote to memory of 4976 3232 file.exe 83 PID 3232 wrote to memory of 1216 3232 file.exe 85 PID 3232 wrote to memory of 1216 3232 file.exe 85 PID 3232 wrote to memory of 1216 3232 file.exe 85 PID 1216 wrote to memory of 4544 1216 gcc.exe 87 PID 1216 wrote to memory of 4544 1216 gcc.exe 87 PID 1216 wrote to memory of 4544 1216 gcc.exe 87 PID 4544 wrote to memory of 4588 4544 Sys322.exe 89 PID 4544 wrote to memory of 4588 4544 Sys322.exe 89 PID 4544 wrote to memory of 4588 4544 Sys322.exe 89
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 file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:3232 -
C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe" --install2⤵
- Executes dropped EXE
- Drops file in System32 directory
PID:4976
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C:\Program Files (x86)\Win64\gcc.exe"C:\Program Files (x86)\Win64\gcc.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 SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1216 -
C:\Users\Admin\AppData\Roaming\Sys322.exe"C:\Users\Admin\AppData\Roaming\Sys322.exe" /launchSelfAndExit "C:\Program Files (x86)\Win64\gcc.exe" 1216 /protectFile3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4544 -
C:\Users\Admin\AppData\Roaming\Sys322.exe"C:\Users\Admin\AppData\Roaming\Sys322.exe" /watchProcess "C:\Program Files (x86)\Win64\gcc.exe" 1216 "/protectFile"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4588
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C:\Windows\SysWOW64\WindowsInput.exe"C:\Windows\SysWOW64\WindowsInput.exe"1⤵
- Executes dropped EXE
PID:2444
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C:\Program Files (x86)\Win64\gcc.exe"C:\Program Files (x86)\Win64\gcc.exe"1⤵
- Executes dropped EXE
PID:3672
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
914KB
MD5c6d06917e01beb93e4bad79537df2eb7
SHA1927d7c8e85f740e35161a5de831771160d81cb95
SHA256c4288fddf7805d6ecfe23adb3f4b687f69d6848d790d4abc672324581a1d0a73
SHA512082ba84dd4d1c1e7ba34077f5d3cacfdf02c2b904d7cdb73ed59269b734c802e817e18ece928c021a0e05c54b497da168dcd1a830148032dff3b19c354bab0cb
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Filesize
425B
MD54eaca4566b22b01cd3bc115b9b0b2196
SHA1e743e0792c19f71740416e7b3c061d9f1336bf94
SHA25634ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb
SHA512bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1
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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