darkcomet | 0c411ca4bc46fdab13e4f2afcc3b6eb65989d7ba92786cb033b6c98956688fd1

System Information Discovery

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

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe

Executes dropped EXE 3 IoCs

pid	Process
5052	svchost.exe
3356	svchost.exe
628	svchost.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-1-5-21-2437139445-1151884604-3026847218-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\svchost.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5052 set thread context of 3356	5052	svchost.exe	88
PID 5052 set thread context of 628	5052	svchost.exe	89

UPX packed file 34 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4884-0-0x0000000000400000-0x0000000000A1C000-memory.dmp	upx
behavioral2/files/0x000c000000023ba4-11.dat	upx
behavioral2/memory/4884-19-0x0000000000400000-0x0000000000A1C000-memory.dmp	upx
behavioral2/memory/3356-22-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/628-30-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/628-35-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/3356-33-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-39-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-42-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-41-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-40-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-38-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/5052-37-0x0000000000400000-0x0000000000A1C000-memory.dmp	upx
behavioral2/memory/628-34-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/628-29-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/628-26-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/3356-25-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-43-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/628-44-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/3356-45-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-47-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-48-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-50-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-52-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-54-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-56-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-58-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-60-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-62-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-64-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-66-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-68-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-70-0x0000000000400000-0x00000000004C6000-memory.dmp	upx
behavioral2/memory/3356-72-0x0000000000400000-0x00000000004C6000-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 6 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_6334ff192eab8570d7309b9116a8b995.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	svchost.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	svchost.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	628	svchost.exe
Token: SeIncreaseQuotaPrivilege	3356	svchost.exe
Token: SeSecurityPrivilege	3356	svchost.exe
Token: SeTakeOwnershipPrivilege	3356	svchost.exe
Token: SeLoadDriverPrivilege	3356	svchost.exe
Token: SeSystemProfilePrivilege	3356	svchost.exe
Token: SeSystemtimePrivilege	3356	svchost.exe
Token: SeProfSingleProcessPrivilege	3356	svchost.exe
Token: SeIncBasePriorityPrivilege	3356	svchost.exe
Token: SeCreatePagefilePrivilege	3356	svchost.exe
Token: SeBackupPrivilege	3356	svchost.exe
Token: SeRestorePrivilege	3356	svchost.exe
Token: SeShutdownPrivilege	3356	svchost.exe
Token: SeDebugPrivilege	3356	svchost.exe
Token: SeSystemEnvironmentPrivilege	3356	svchost.exe
Token: SeChangeNotifyPrivilege	3356	svchost.exe
Token: SeRemoteShutdownPrivilege	3356	svchost.exe
Token: SeUndockPrivilege	3356	svchost.exe
Token: SeManageVolumePrivilege	3356	svchost.exe
Token: SeImpersonatePrivilege	3356	svchost.exe
Token: SeCreateGlobalPrivilege	3356	svchost.exe
Token: 33	3356	svchost.exe
Token: 34	3356	svchost.exe
Token: 35	3356	svchost.exe
Token: 36	3356	svchost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe
5052	svchost.exe
628	svchost.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 4884 wrote to memory of 2284	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	83
PID 4884 wrote to memory of 2284	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	83
PID 4884 wrote to memory of 2284	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	83
PID 2284 wrote to memory of 3584	2284	cmd.exe	86
PID 2284 wrote to memory of 3584	2284	cmd.exe	86
PID 2284 wrote to memory of 3584	2284	cmd.exe	86
PID 4884 wrote to memory of 5052	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	87
PID 4884 wrote to memory of 5052	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	87
PID 4884 wrote to memory of 5052	4884	JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe	87
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 3356	5052	svchost.exe	88
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89
PID 5052 wrote to memory of 628	5052	svchost.exe	89

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6334ff192eab8570d7309b9116a8b995.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4884
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VQPKJ.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Microsoft" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:3584
- C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:5052
- - C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
    False
    3⤵
    - 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:3356
- - C:\Users\Admin\AppData\Roaming\Microsoft\svchost.exe
    False
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:628

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

4

System Information Discovery

5

System Location Discovery

T1614

System Language Discovery