darkcomet | 9aa13a044e4f85b2c03e8938fd9fc9bfb8a4a8868cd3652ab2fcbff2e03e1ba0

System Information Discovery

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.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:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid process

3300 winupdate.exe

pid	process
3300	winupdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exenotepad.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	notepad.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

description pid process target process

PID 1816 set thread context of 4736 1816 88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe explorer.exe

description	pid	process	target process
PID 1816 set thread context of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe

UPX packed file 13 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/1816-0-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-7-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-9-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-8-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-10-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-12-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe	upx
behavioral2/memory/4736-6-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-43-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/1816-48-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-42-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/3300-50-0x0000000013140000-0x00000000131FB000-memory.dmp	upx
behavioral2/memory/4736-51-0x0000000013140000-0x00000000131FB000-memory.dmp	upx

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 5 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:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exenotepad.exeexplorer.exenotepad.exewinupdate.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe

Checks processor information in registry 2 TTPs 12 IoCs

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

Query Registry

System Information Discovery

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

System Information Discovery

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exeexplorer.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Modifies registry class 1 IoCs

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

explorer.exe

pid process

4736 explorer.exe

pid	process
4736	explorer.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exeexplorer.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeSecurityPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeBackupPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeRestorePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeShutdownPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeDebugPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeUndockPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: 33	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: 34	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: 35	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: 36	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4736	explorer.exe
Token: SeSecurityPrivilege	4736	explorer.exe
Token: SeTakeOwnershipPrivilege	4736	explorer.exe
Token: SeLoadDriverPrivilege	4736	explorer.exe
Token: SeSystemProfilePrivilege	4736	explorer.exe
Token: SeSystemtimePrivilege	4736	explorer.exe
Token: SeProfSingleProcessPrivilege	4736	explorer.exe
Token: SeIncBasePriorityPrivilege	4736	explorer.exe
Token: SeCreatePagefilePrivilege	4736	explorer.exe
Token: SeBackupPrivilege	4736	explorer.exe
Token: SeRestorePrivilege	4736	explorer.exe
Token: SeShutdownPrivilege	4736	explorer.exe
Token: SeDebugPrivilege	4736	explorer.exe
Token: SeSystemEnvironmentPrivilege	4736	explorer.exe
Token: SeChangeNotifyPrivilege	4736	explorer.exe
Token: SeRemoteShutdownPrivilege	4736	explorer.exe
Token: SeUndockPrivilege	4736	explorer.exe
Token: SeManageVolumePrivilege	4736	explorer.exe
Token: SeImpersonatePrivilege	4736	explorer.exe
Token: SeCreateGlobalPrivilege	4736	explorer.exe
Token: 33	4736	explorer.exe
Token: 34	4736	explorer.exe
Token: 35	4736	explorer.exe
Token: 36	4736	explorer.exe
Token: SeIncreaseQuotaPrivilege	3300	winupdate.exe
Token: SeSecurityPrivilege	3300	winupdate.exe
Token: SeTakeOwnershipPrivilege	3300	winupdate.exe
Token: SeLoadDriverPrivilege	3300	winupdate.exe
Token: SeSystemProfilePrivilege	3300	winupdate.exe
Token: SeSystemtimePrivilege	3300	winupdate.exe
Token: SeProfSingleProcessPrivilege	3300	winupdate.exe
Token: SeIncBasePriorityPrivilege	3300	winupdate.exe
Token: SeCreatePagefilePrivilege	3300	winupdate.exe
Token: SeBackupPrivilege	3300	winupdate.exe
Token: SeRestorePrivilege	3300	winupdate.exe
Token: SeShutdownPrivilege	3300	winupdate.exe
Token: SeDebugPrivilege	3300	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3300	winupdate.exe
Token: SeChangeNotifyPrivilege	3300	winupdate.exe
Token: SeRemoteShutdownPrivilege	3300	winupdate.exe

Suspicious use of WriteProcessMemory 53 IoCs

Processes:

88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exeexplorer.exe

description	pid	process	target process
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 460	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	notepad.exe
PID 1816 wrote to memory of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe
PID 1816 wrote to memory of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe
PID 1816 wrote to memory of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe
PID 1816 wrote to memory of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe
PID 1816 wrote to memory of 4736	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	explorer.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 4736 wrote to memory of 1420	4736	explorer.exe	notepad.exe
PID 1816 wrote to memory of 3300	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	winupdate.exe
PID 1816 wrote to memory of 3300	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	winupdate.exe
PID 1816 wrote to memory of 3300	1816	88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\88de5015a6559bfbfedc6929b8449041_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:460
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4736
- - C:\Windows\SysWOW64\notepad.exe
    C:\Windows\SysWOW64\notepad.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1420
- C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
  "C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe"
  2⤵
  - Checks BIOS information in registry
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:3300

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

4

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery