darkcomet | 7e8b21d56644cc0509e46e6f246a6f44b64be4325377569acedeba3f3cf339d6

System Information Discovery

Processes:

vbc.exe

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

72912124de89e0086129e836194239ae_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	72912124de89e0086129e836194239ae_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

Processes:

Java Runtime.exeFileReNamerv2.exe

pid	Process
2200	Java Runtime.exe
400	FileReNamerv2.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Java Runtime.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\none = "C:\\ProgramData\\svchost.exe"	Java Runtime.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Java Runtime.exe

description	pid	Process	procid_target
PID 2200 set thread context of 3768	2200	Java Runtime.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 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

Processes:

Java Runtime.exeFileReNamerv2.exevbc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Java Runtime.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	FileReNamerv2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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

Processes:

vbc.exe

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

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

Processes:

vbc.exe

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

Suspicious use of AdjustPrivilegeToken 25 IoCs

Processes:

72912124de89e0086129e836194239ae_JaffaCakes118.exevbc.exe

description	pid	Process
Token: SeDebugPrivilege	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3768	vbc.exe
Token: SeSecurityPrivilege	3768	vbc.exe
Token: SeTakeOwnershipPrivilege	3768	vbc.exe
Token: SeLoadDriverPrivilege	3768	vbc.exe
Token: SeSystemProfilePrivilege	3768	vbc.exe
Token: SeSystemtimePrivilege	3768	vbc.exe
Token: SeProfSingleProcessPrivilege	3768	vbc.exe
Token: SeIncBasePriorityPrivilege	3768	vbc.exe
Token: SeCreatePagefilePrivilege	3768	vbc.exe
Token: SeBackupPrivilege	3768	vbc.exe
Token: SeRestorePrivilege	3768	vbc.exe
Token: SeShutdownPrivilege	3768	vbc.exe
Token: SeDebugPrivilege	3768	vbc.exe
Token: SeSystemEnvironmentPrivilege	3768	vbc.exe
Token: SeChangeNotifyPrivilege	3768	vbc.exe
Token: SeRemoteShutdownPrivilege	3768	vbc.exe
Token: SeUndockPrivilege	3768	vbc.exe
Token: SeManageVolumePrivilege	3768	vbc.exe
Token: SeImpersonatePrivilege	3768	vbc.exe
Token: SeCreateGlobalPrivilege	3768	vbc.exe
Token: 33	3768	vbc.exe
Token: 34	3768	vbc.exe
Token: 35	3768	vbc.exe
Token: 36	3768	vbc.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

FileReNamerv2.exevbc.exe

pid	Process
400	FileReNamerv2.exe
3768	vbc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

72912124de89e0086129e836194239ae_JaffaCakes118.exeJava Runtime.exe

description	pid	Process	procid_target
PID 2976 wrote to memory of 2200	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	88
PID 2976 wrote to memory of 2200	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	88
PID 2976 wrote to memory of 2200	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	88
PID 2976 wrote to memory of 400	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	89
PID 2976 wrote to memory of 400	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	89
PID 2976 wrote to memory of 400	2976	72912124de89e0086129e836194239ae_JaffaCakes118.exe	89
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90
PID 2200 wrote to memory of 3768	2200	Java Runtime.exe	90

C:\Users\Admin\AppData\Local\Temp\72912124de89e0086129e836194239ae_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\72912124de89e0086129e836194239ae_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2976
- C:\Users\Admin\AppData\Local\Temp\Java Runtime.exe
  "C:\Users\Admin\AppData\Local\Temp\Java Runtime.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2200
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    3⤵
    - Windows security bypass
    - Checks BIOS information in registry
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3768
- C:\Users\Admin\AppData\Local\Temp\FileReNamerv2.exe
  "C:\Users\Admin\AppData\Local\Temp\FileReNamerv2.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

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

Impair Defenses

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Query Registry

4

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery