darkcomet | 0f273de8142e8bcc10d95eb36c7fe524ce7a971b37ee49afa2aee213d5b22d5f

System Information Discovery

Processes:

winhost32.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winhost32.exe

Executes dropped EXE 2 IoCs

Processes:

winhost32.exeTOKiO DRiFT.exe

pid	Process
2852	winhost32.exe
1712	TOKiO DRiFT.exe

Loads dropped DLL 4 IoCs

Processes:

9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe

pid	Process
2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

winhost32.exe9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	winhost32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\WOvKOnDBUY = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\rundll32.exe\""	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe

Drops file in System32 directory 3 IoCs

Processes:

winhost32.exe

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	winhost32.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	winhost32.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	winhost32.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exewinhost32.exe

description	pid	Process	procid_target
PID 2496 set thread context of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2852 set thread context of 2768	2852	winhost32.exe	31

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

Processes:

9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exewinhost32.exeexplorer.exeTOKiO DRiFT.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winhost32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TOKiO DRiFT.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:

winhost32.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winhost32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winhost32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

System Information Discovery

Processes:

winhost32.exe

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winhost32.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exewinhost32.exe

description	pid	Process
Token: SeDebugPrivilege	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2852	winhost32.exe
Token: SeSecurityPrivilege	2852	winhost32.exe
Token: SeTakeOwnershipPrivilege	2852	winhost32.exe
Token: SeLoadDriverPrivilege	2852	winhost32.exe
Token: SeSystemProfilePrivilege	2852	winhost32.exe
Token: SeSystemtimePrivilege	2852	winhost32.exe
Token: SeProfSingleProcessPrivilege	2852	winhost32.exe
Token: SeIncBasePriorityPrivilege	2852	winhost32.exe
Token: SeCreatePagefilePrivilege	2852	winhost32.exe
Token: SeBackupPrivilege	2852	winhost32.exe
Token: SeRestorePrivilege	2852	winhost32.exe
Token: SeShutdownPrivilege	2852	winhost32.exe
Token: SeDebugPrivilege	2852	winhost32.exe
Token: SeSystemEnvironmentPrivilege	2852	winhost32.exe
Token: SeChangeNotifyPrivilege	2852	winhost32.exe
Token: SeRemoteShutdownPrivilege	2852	winhost32.exe
Token: SeUndockPrivilege	2852	winhost32.exe
Token: SeManageVolumePrivilege	2852	winhost32.exe
Token: SeImpersonatePrivilege	2852	winhost32.exe
Token: SeCreateGlobalPrivilege	2852	winhost32.exe
Token: 33	2852	winhost32.exe
Token: 34	2852	winhost32.exe
Token: 35	2852	winhost32.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exewinhost32.exe

description	pid	Process	procid_target
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2496 wrote to memory of 2852	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	30
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2852 wrote to memory of 2768	2852	winhost32.exe	31
PID 2496 wrote to memory of 1712	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	32
PID 2496 wrote to memory of 1712	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	32
PID 2496 wrote to memory of 1712	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	32
PID 2496 wrote to memory of 1712	2496	9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe	32

C:\Users\Admin\AppData\Local\Temp\9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\9866071735dcfb965905f6c8c00f2da6_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2496
- C:\Users\Admin\AppData\Local\Temp\winhost32.exe
  C:\Users\Admin\AppData\Local\Temp\\winhost32.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2852
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2768
- C:\Users\Admin\AppData\Local\Temp\TOKiO DRiFT.exe
  "C:\Users\Admin\AppData\Local\Temp\TOKiO DRiFT.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:1712

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

3

System Information Discovery

3

System Location Discovery

T1614

System Language Discovery