Analysis
- max time kernel
148s - max time network
124s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
17/08/2024, 19:01
General
- Target a3c00fb7d3311c7648d12f7db0b06543_JaffaCakes118.exe
- Size 252KB
- Sample240817-xpl9qa1flc
- SHA256 a7ee6b24086063204014a28604735ab2ff16fd2401248198d2b71547a51149f6
Malware Config
Extracted
-
darkcomet
-
Guest16
-
127.0.0.1:81
-
DC_MUTEX-3JS22WM
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
RSvPoMixQJ1y
-
install
true
-
offline_keylogger
true
-
persistence
false
-
reg_key
MicroUpdate
Signatures
- Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
- Modifies WinLogon for persistence 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
- UPX packed file 12 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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).
- 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 use of AdjustPrivilegeToken 48 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\a3c00fb7d3311c7648d12f7db0b06543_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a3c00fb7d3311c7648d12f7db0b06543_JaffaCakes118.exe"1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
-
Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Replay Monitor
Loading Replay Monitor...
Downloads
msdcsc.exe
memory/1092-22-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-16-0x00000000008D0000-0x00000000008D1000-memory.dmp
memory/1092-17-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-18-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-20-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-21-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-24-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-26-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-27-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/1092-28-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2884-1-0x0000000000AD0000-0x0000000000AD1000-memory.dmp
memory/2884-15-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2884-0-0x0000000000400000-0x00000000004B9000-memory.dmp