darkcomet | 91dc2eb012af0b120110734c63171424e2ded01c5ed48e887631f9cad92cc5e8

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe

Executes dropped EXE 2 IoCs

pid	Process
1904	winini.exe
2880	cvtres.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Live = "C:\\Users\\Admin\\AppData\\winini.exe"	winini.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1904 set thread context of 2880	1904	winini.exe	90

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winini.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1904	winini.exe
1904	winini.exe

Suspicious use of AdjustPrivilegeToken 31 IoCs

description	pid	Process
Token: SeDebugPrivilege	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe
Token: SeRestorePrivilege	3744	dw20.exe
Token: SeBackupPrivilege	3744	dw20.exe
Token: SeBackupPrivilege	3744	dw20.exe
Token: SeBackupPrivilege	3744	dw20.exe
Token: SeDebugPrivilege	1904	winini.exe
Token: SeIncreaseQuotaPrivilege	2880	cvtres.exe
Token: SeSecurityPrivilege	2880	cvtres.exe
Token: SeTakeOwnershipPrivilege	2880	cvtres.exe
Token: SeLoadDriverPrivilege	2880	cvtres.exe
Token: SeSystemProfilePrivilege	2880	cvtres.exe
Token: SeSystemtimePrivilege	2880	cvtres.exe
Token: SeProfSingleProcessPrivilege	2880	cvtres.exe
Token: SeIncBasePriorityPrivilege	2880	cvtres.exe
Token: SeCreatePagefilePrivilege	2880	cvtres.exe
Token: SeBackupPrivilege	2880	cvtres.exe
Token: SeRestorePrivilege	2880	cvtres.exe
Token: SeShutdownPrivilege	2880	cvtres.exe
Token: SeDebugPrivilege	2880	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2880	cvtres.exe
Token: SeChangeNotifyPrivilege	2880	cvtres.exe
Token: SeRemoteShutdownPrivilege	2880	cvtres.exe
Token: SeUndockPrivilege	2880	cvtres.exe
Token: SeManageVolumePrivilege	2880	cvtres.exe
Token: SeImpersonatePrivilege	2880	cvtres.exe
Token: SeCreateGlobalPrivilege	2880	cvtres.exe
Token: 33	2880	cvtres.exe
Token: 34	2880	cvtres.exe
Token: 35	2880	cvtres.exe
Token: 36	2880	cvtres.exe
Token: SeDebugPrivilege	1904	winini.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2880	cvtres.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2544 wrote to memory of 1904	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	88
PID 2544 wrote to memory of 1904	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	88
PID 2544 wrote to memory of 1904	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	88
PID 2544 wrote to memory of 3744	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	89
PID 2544 wrote to memory of 3744	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	89
PID 2544 wrote to memory of 3744	2544	JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe	89
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90
PID 1904 wrote to memory of 2880	1904	winini.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_08509d5612f088c46f1d859cb965c7df.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2544
- C:\Users\Admin\AppData\winini.exe
  "C:\Users\Admin\AppData\winini.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1904
- - C:\Users\Admin\AppData\cvtres.exe
    C:\Users\Admin\AppData\\\cvtres.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2880
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
  dw20.exe -x -s 1580
  2⤵
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:3744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

4

System Location Discovery

T1614

System Language Discovery