Analysis
- max time kernel
150s - max time network
171s - platform
windows10-2004_x64 - resource
win10v2004-20250502-en - resource tags
- submitted
02/06/2025, 22:44
General
- Target uploaded/222.exe
- Size 907KB
- Sample250602-2pacdabk21
- SHA256 b2f324d6ae851aa65773d233201d58ac5230d525281afd1775e0b82514ac9645
Malware Config
Extracted
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orcus
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147.185.221.16:18244
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c887a6675aef4cf59921cb5b3f7c679d
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autostart_method
Disable
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enable_keylogger
true
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install_path
%appdata%\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
- Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
- Orcus family
- Orcus main payload 1 IoCs
- Orcurs Rat Executable 2 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Drops desktop.ini file(s) 2 IoCs
- Drops file in Windows directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of SendNotifyMessage 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 12 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\uploaded\222.exe"C:\Users\Admin\AppData\Local\Temp\uploaded\222.exe"1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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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\hx8jh0qs.cmdline"2⤵
- Suspicious use of WriteProcessMemory
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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\RESDEC8.tmp" "c:\Users\Admin\AppData\Local\Temp\CSCDEC7.tmp"3⤵
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C:\Users\Admin\AppData\Roaming\Orcus\Orcus.exe"C:\Users\Admin\AppData\Roaming\Orcus\Orcus.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /launchSelfAndExit "C:\Users\Admin\AppData\Roaming\Orcus\Orcus.exe" 5032 /protectFile3⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe"C:\Users\Admin\AppData\Roaming\OrcusWatchdog.exe" /watchProcess "C:\Users\Admin\AppData\Roaming\Orcus\Orcus.exe" 5032 "/protectFile"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
OrcusWatchdog.exe.log
RESDEC8.tmp
hx8jh0qs.dll
OrcusWatchdog.exe
Orcus.exe
Orcus.exe.config
CSCDEC7.tmp
hx8jh0qs.0.cs
hx8jh0qs.cmdline
memory/1532-2-0x000000001B9F0000-0x000000001BA4C000-memory.dmp
memory/1532-0-0x00007FF8AB355000-0x00007FF8AB356000-memory.dmp
memory/1532-8-0x000000001C620000-0x000000001C6BC000-memory.dmp
memory/1532-23-0x000000001CCE0000-0x000000001CCF6000-memory.dmp
memory/1532-7-0x000000001C0B0000-0x000000001C57E000-memory.dmp
memory/1532-25-0x000000001B930000-0x000000001B942000-memory.dmp
memory/1532-6-0x000000001BBD0000-0x000000001BBDE000-memory.dmp
memory/1532-3-0x00007FF8AB0A0000-0x00007FF8ABA41000-memory.dmp
memory/1532-41-0x00007FF8AB0A0000-0x00007FF8ABA41000-memory.dmp
memory/1532-1-0x00007FF8AB0A0000-0x00007FF8ABA41000-memory.dmp
memory/3340-21-0x00007FF8AB0A0000-0x00007FF8ABA41000-memory.dmp
memory/3340-16-0x00007FF8AB0A0000-0x00007FF8ABA41000-memory.dmp
memory/5032-42-0x00007FF8A8623000-0x00007FF8A8625000-memory.dmp
memory/5032-46-0x00000000014B0000-0x00000000014C8000-memory.dmp
memory/5032-47-0x000000001CFE0000-0x000000001D1A2000-memory.dmp
memory/5032-48-0x00000000014D0000-0x00000000014E0000-memory.dmp
memory/5032-45-0x0000000001490000-0x00000000014A2000-memory.dmp
memory/5032-44-0x0000000000AD0000-0x0000000000BB8000-memory.dmp
memory/5032-66-0x00007FF8A8623000-0x00007FF8A8625000-memory.dmp
memory/5916-62-0x00000000003C0000-0x00000000003C8000-memory.dmp