Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20241007-en - resource tags
- submitted
25/11/2024, 01:41
General
- Target 98763ac353971441fa30d67cb10a5c1b_JaffaCakes118.exe
- Size 304KB
- Sample241125-b4fjts1ney
- SHA256 f72ffb67efe93075a9686032026933a10fd68e4730ee327a1e08c523015ede13
Malware Config
Extracted
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darkcomet
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Zhinola
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taziyane.no-ip.org:1604
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DC_MUTEX-31MMF7V
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InstallPath
MSDCSC\msdcsc.exe
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gencode
kn8aQWvvLTgX
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install
true
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offline_keylogger
true
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persistence
false
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reg_key
MicroUpdate
Signatures
- Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
- Darkcomet family
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
- Modifies firewall policy service 3 TTPs 3 IoCs
- Windows security bypass 2 TTPs 1 IoCs
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 2 IoCs
- Windows security modification 2 TTPs 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Drops file in System32 directory 3 IoCs
- Suspicious use of SetThreadContext 2 IoCs
- UPX packed file 27 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 8 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 25 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\98763ac353971441fa30d67cb10a5c1b_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\98763ac353971441fa30d67cb10a5c1b_JaffaCakes118.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\98763ac353971441fa30d67cb10a5c1b_JaffaCakes118.exe"C:\Users\Admin\AppData\Local\Temp\98763ac353971441fa30d67cb10a5c1b_JaffaCakes118.exe"2⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\REGISTER.BAT" "3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exeregsvr32 C:\Windows\System32\SkinCrafter2.dll4⤵
- System Location Discovery: System Language Discovery
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"C:\Windows\system32\MSDCSC\msdcsc.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"C:\Windows\SysWOW64\MSDCSC\msdcsc.exe"4⤵
- Modifies firewall policy service
- Windows security bypass
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\REGISTER.BAT" "5⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exeregsvr32 C:\Windows\System32\SkinCrafter2.dll6⤵
- System Location Discovery: System Language Discovery
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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
1Privilege Escalation
Boot or Logon Autostart Execution
2Registry Run Keys / Startup Folder
1Winlogon Helper DLL
1Create or Modify System Process
1Windows Service
1Defense Evasion
Impair Defenses
3Disable or Modify System Firewall
1Disable or Modify Tools
2Modify Registry
5Replay Monitor
Loading Replay Monitor...
Downloads
REGISTER.BAT
msdcsc.exe
memory/2560-26-0x0000000000400000-0x000000000040C000-memory.dmp
memory/3216-3-0x0000000000400000-0x000000000040C000-memory.dmp
memory/4204-35-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-2-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-7-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-5-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-4-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-24-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-0-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4204-6-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-39-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-43-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-34-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-37-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-38-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-28-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-40-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-41-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-42-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-33-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-44-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-45-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-46-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-47-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-48-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-49-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-50-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-51-0x0000000000400000-0x00000000004C7000-memory.dmp
memory/4576-52-0x0000000000400000-0x00000000004C7000-memory.dmp