darkcomet | 2094c761cc993cf267b51d24db7249a520c475336a5ea980fc2db70214a614c9

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winexec.exe

Executes dropped EXE 2 IoCs

pid	Process
2892	dec.exe
2852	winexec.exe

Loads dropped DLL 6 IoCs

pid	Process
2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
2892	dec.exe
2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
2852	winexec.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\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winexec.exe

Checks processor information in registry 2 TTPs 4 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winexec.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winexec.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winexec.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winexec.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winexec.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2852	winexec.exe
Token: SeSecurityPrivilege	2852	winexec.exe
Token: SeTakeOwnershipPrivilege	2852	winexec.exe
Token: SeLoadDriverPrivilege	2852	winexec.exe
Token: SeSystemProfilePrivilege	2852	winexec.exe
Token: SeSystemtimePrivilege	2852	winexec.exe
Token: SeProfSingleProcessPrivilege	2852	winexec.exe
Token: SeIncBasePriorityPrivilege	2852	winexec.exe
Token: SeCreatePagefilePrivilege	2852	winexec.exe
Token: SeBackupPrivilege	2852	winexec.exe
Token: SeRestorePrivilege	2852	winexec.exe
Token: SeShutdownPrivilege	2852	winexec.exe
Token: SeDebugPrivilege	2852	winexec.exe
Token: SeSystemEnvironmentPrivilege	2852	winexec.exe
Token: SeChangeNotifyPrivilege	2852	winexec.exe
Token: SeRemoteShutdownPrivilege	2852	winexec.exe
Token: SeUndockPrivilege	2852	winexec.exe
Token: SeManageVolumePrivilege	2852	winexec.exe
Token: SeImpersonatePrivilege	2852	winexec.exe
Token: SeCreateGlobalPrivilege	2852	winexec.exe
Token: 33	2852	winexec.exe
Token: 34	2852	winexec.exe
Token: 35	2852	winexec.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2892	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	29
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31
PID 2840 wrote to memory of 2852	2840	JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe	31

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2d1ddd5d6bde84b1da22df5c40171a81.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2840
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dec.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\dec.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winexec.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\winexec.exe
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2852

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

3

System Location Discovery

T1614

System Language Discovery