Analysis
- max time kernel
148s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
24/08/2024, 08:24
General
- Target be37ae1be7e42ba172b42dca3cfdfa04_JaffaCakes118.exe
- Size 412KB
- Sample240824-ka523a1erg
- SHA256 efa0aba4eed3c37dbb6ca543bf5915719f4353bdb58499e2863dbef8a0acfd41
Malware Config
Extracted
-
darkcomet
-
Guest16
-
127.0.0.1:81
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DC_MUTEX-F54S21D
-
InstallPath
MSDCSC\msdcsc.exe
-
gencode
0S2UNwiZrvBq
-
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 2 IoCs
- UPX packed file 22 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Adds Run key to start application 2 TTPs 1 IoCs
- Suspicious use of SetThreadContext 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 4 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 3 IoCs
- Suspicious use of WriteProcessMemory 19 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\be37ae1be7e42ba172b42dca3cfdfa04_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\be37ae1be7e42ba172b42dca3cfdfa04_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\be37ae1be7e42ba172b42dca3cfdfa04_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\be37ae1be7e42ba172b42dca3cfdfa04_JaffaCakes118.exe"2⤵
- 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"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"4⤵
- 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
699c4b9cdebca7aaea5193cae8a50098_ea0aa4d6-aa48-4733-9e64-85ab59ce35b0
msdcsc.exe
memory/2056-54-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-57-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-40-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-53-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-51-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-50-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-45-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-55-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-44-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-42-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-58-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-43-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-41-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-37-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/2056-39-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-11-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-10-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-6-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-8-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-9-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-27-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3352-12-0x0000000000400000-0x00000000004B9000-memory.dmp
memory/3796-30-0x0000000000400000-0x0000000000472000-memory.dmp
memory/3796-38-0x0000000000400000-0x0000000000472000-memory.dmp
memory/3796-33-0x0000000000400000-0x0000000000472000-memory.dmp
memory/3796-31-0x0000000000400000-0x0000000000472000-memory.dmp
memory/4680-2-0x0000000000640000-0x0000000000641000-memory.dmp
memory/4680-5-0x0000000002AF0000-0x0000000002AF1000-memory.dmp
memory/4680-4-0x0000000002350000-0x0000000002351000-memory.dmp