Analysis
- max time kernel
128s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
14/04/2024, 23:27
General
- Target efc29049fa5d14ed1db26fc6fbc7174a_JaffaCakes118.exe
- Size 648KB
- Sample240414-3fmf1sgf28
- SHA256 5d12db2475846f968b67d2dc287bd9d0fbc8f47f69f03911ec16c2ed23eb9324
Malware Config
Signatures
- Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Modifies security service 2 TTPs 1 IoCs
- Windows security bypass 2 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Windows security modification 2 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Modifies registry class 1 IoCs
- Runs ping.exe 1 TTPs 1 IoCs
- Suspicious use of AdjustPrivilegeToken 48 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\efc29049fa5d14ed1db26fc6fbc7174a_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\efc29049fa5d14ed1db26fc6fbc7174a_JaffaCakes118.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Windupdt\winupdatec.exe"C:\Windupdt\winupdatec.exe"2⤵
- Modifies security service
- Windows security bypass
- Executes dropped EXE
- Windows security modification
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
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-
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\efc29049fa5d14ed1db26fc6fbc7174a_JaffaCakes118.exe"2⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 53⤵
- Runs ping.exe
-
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
winupdatec.exe
memory/2744-35-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/2744-0-0x00000000006E0000-0x00000000006E1000-memory.dmp
memory/4320-41-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-43-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-38-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-39-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-40-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-36-0x00000000006C0000-0x00000000006C1000-memory.dmp
memory/4320-42-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-37-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-44-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-45-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-46-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-47-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-48-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-49-0x0000000000400000-0x00000000004B3000-memory.dmp
memory/4320-50-0x0000000000400000-0x00000000004B3000-memory.dmp