Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
08/01/2024, 01:09
General
- Target 586ee7a1806b903c8bbd849fac7f084ec49c5cdc10d7dbfb0322a0e8c9ce46e5.exe
- Size 912KB
- Sample240108-bhv3dsheak
- SHA256 586ee7a1806b903c8bbd849fac7f084ec49c5cdc10d7dbfb0322a0e8c9ce46e5
Malware Config
Extracted
-
orcus
-
192.168.1.72:6969
-
5a53ca42f4194cad8f3e25b8b9bf56df
-
autostart_method
TaskScheduler
-
enable_keylogger
true
-
install_path
%programfiles%\Orcus\Orcus.exe
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reconnect_delay
10000
-
registry_keyname
Orcus
-
taskscheduler_taskname
Orcus
-
watchdog_path
AppData\WindowsDefender.exe
Signatures
- Orcus
Orcus is a Remote Access Trojan that is being sold on underground forums.
- Orcus main payload 4 IoCs
- Orcurs Rat Executable 5 IoCs
- Checks computer location settings 2 TTPs 3 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 4 IoCs
- Drops file in Program Files directory 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\586ee7a1806b903c8bbd849fac7f084ec49c5cdc10d7dbfb0322a0e8c9ce46e5.exe"C:\Users\Admin\AppData\Local\Temp\586ee7a1806b903c8bbd849fac7f084ec49c5cdc10d7dbfb0322a0e8c9ce46e5.exe"1⤵
- Checks computer location settings
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Orcus\Orcus.exe"C:\Program Files (x86)\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\WindowsDefender.exe"C:\Users\Admin\AppData\Roaming\WindowsDefender.exe" /launchSelfAndExit "C:\Program Files (x86)\Orcus\Orcus.exe" 2156 /protectFile3⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\WindowsDefender.exe"C:\Users\Admin\AppData\Roaming\WindowsDefender.exe" /watchProcess "C:\Program Files (x86)\Orcus\Orcus.exe" 2156 "/protectFile"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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-
-
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C:\Program Files (x86)\Orcus\Orcus.exe"C:\Program Files (x86)\Orcus\Orcus.exe"1⤵
- Executes dropped EXE
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
Orcus.exe
Orcus.exe
Orcus.exe
Orcus.exe
Orcus.exe.config
WindowsDefender.exe.log
err_5a53ca42f4194cad8f3e25b8b9bf56df.dat
WindowsDefender.exe
memory/2156-39-0x0000000006990000-0x00000000069A0000-memory.dmp
memory/2156-37-0x0000000006800000-0x0000000006818000-memory.dmp
memory/2156-41-0x0000000006B70000-0x0000000006D32000-memory.dmp
memory/2156-36-0x0000000006640000-0x0000000006658000-memory.dmp
memory/2156-35-0x0000000005FC0000-0x000000000600E000-memory.dmp
memory/2156-32-0x00000000026E0000-0x00000000026F0000-memory.dmp
memory/2156-30-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/2156-43-0x0000000006EC0000-0x0000000006ECA000-memory.dmp
memory/2156-66-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/2156-67-0x00000000026E0000-0x00000000026F0000-memory.dmp
memory/3156-31-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/3156-6-0x00000000056B0000-0x0000000005742000-memory.dmp
memory/3156-0-0x0000000000AB0000-0x0000000000B9A000-memory.dmp
memory/3156-13-0x0000000006370000-0x00000000063BC000-memory.dmp
memory/3156-12-0x0000000006330000-0x000000000636C000-memory.dmp
memory/3156-11-0x00000000062D0000-0x00000000062E2000-memory.dmp
memory/3156-10-0x0000000006890000-0x0000000006EA8000-memory.dmp
memory/3156-9-0x0000000005B50000-0x0000000005BB6000-memory.dmp
memory/3156-8-0x00000000056A0000-0x00000000056A8000-memory.dmp
memory/3156-7-0x0000000005690000-0x00000000056A2000-memory.dmp
memory/3156-1-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/3156-14-0x00000000064F0000-0x00000000065FA000-memory.dmp
memory/3156-2-0x0000000005530000-0x0000000005540000-memory.dmp
memory/3156-5-0x0000000005BC0000-0x0000000006164000-memory.dmp
memory/3156-4-0x00000000055B0000-0x000000000560C000-memory.dmp
memory/3156-3-0x0000000002EE0000-0x0000000002EEE000-memory.dmp
memory/3184-65-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/3184-42-0x0000000005A20000-0x0000000005A30000-memory.dmp
memory/3184-40-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/3300-57-0x0000000000660000-0x0000000000668000-memory.dmp
memory/3300-58-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/3300-62-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/4912-63-0x0000000074EC0000-0x0000000075670000-memory.dmp
memory/4912-68-0x0000000074EC0000-0x0000000075670000-memory.dmp