Analysis
- max time kernel
150s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
19/08/2024, 05:14
General
- Target a9ba868779371e1161d9faa291b094b2_JaffaCakes118.exe
- Size 353KB
- Sample240819-fxbphswcqf
- SHA256 21171f46cfb50dd24fde5c4bf845c310dbe7fa6a270a1e4fd77a02f592c7734d
Malware Config
Extracted
-
darkcomet
-
Guest16
-
nnns.zapto.org:4433
-
DC_MUTEX-X6WQ1LQ
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
35RPxwGLbfC3
-
install
true
-
offline_keylogger
true
-
persistence
true
-
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
- Drops file in Drivers directory 1 IoCs
- ASPack v2.12-2.42 1 IoCs
Detects executables packed with ASPack v2.12-2.42
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 2 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\a9ba868779371e1161d9faa291b094b2_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\a9ba868779371e1161d9faa291b094b2_JaffaCakes118.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- 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
- Adds Run key to start application
- 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/1092-27-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-26-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-15-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-16-0x00000000021A0000-0x00000000021A1000-memory.dmp
memory/1092-32-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-18-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-19-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-20-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-22-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-31-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-25-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-24-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-23-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-21-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-30-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-28-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/1092-29-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/4944-0-0x0000000000400000-0x00000000004E5000-memory.dmp
memory/4944-1-0x00000000007D0000-0x00000000007D1000-memory.dmp
memory/4944-17-0x0000000000400000-0x00000000004E5000-memory.dmp