darkcomet | 98b49dda6a6fcdfa0bfd1557bff2fce72107aa383a84498ec474cba7b3b1b97d

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	conhost.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
1764	conhost.exe
996	conhost.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Console Window Host = "C:\\Users\\Admin\\AppData\\Roaming\\Console Window Host\\conhost.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1764 set thread context of 996	1764	conhost.exe	102

UPX packed file 27 IoCs

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

upx

resource	yara_rule
behavioral2/memory/536-0-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral2/memory/536-8-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral2/files/0x000f000000023bb4-15.dat	upx
behavioral2/memory/536-23-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral2/memory/996-29-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-26-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-30-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-34-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/1764-32-0x0000000000400000-0x00000000008CE000-memory.dmp	upx
behavioral2/memory/996-37-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-40-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-39-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-38-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-36-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-35-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-41-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-42-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-43-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-44-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-45-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-46-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-47-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-48-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-49-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-50-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-51-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral2/memory/996-52-0x0000000000400000-0x00000000004B5000-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

description	ioc	Process
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	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	conhost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.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	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	conhost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	conhost.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	conhost.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	996	conhost.exe
Token: SeSecurityPrivilege	996	conhost.exe
Token: SeTakeOwnershipPrivilege	996	conhost.exe
Token: SeLoadDriverPrivilege	996	conhost.exe
Token: SeSystemProfilePrivilege	996	conhost.exe
Token: SeSystemtimePrivilege	996	conhost.exe
Token: SeProfSingleProcessPrivilege	996	conhost.exe
Token: SeIncBasePriorityPrivilege	996	conhost.exe
Token: SeCreatePagefilePrivilege	996	conhost.exe
Token: SeBackupPrivilege	996	conhost.exe
Token: SeRestorePrivilege	996	conhost.exe
Token: SeShutdownPrivilege	996	conhost.exe
Token: SeDebugPrivilege	996	conhost.exe
Token: SeSystemEnvironmentPrivilege	996	conhost.exe
Token: SeChangeNotifyPrivilege	996	conhost.exe
Token: SeRemoteShutdownPrivilege	996	conhost.exe
Token: SeUndockPrivilege	996	conhost.exe
Token: SeManageVolumePrivilege	996	conhost.exe
Token: SeImpersonatePrivilege	996	conhost.exe
Token: SeCreateGlobalPrivilege	996	conhost.exe
Token: 33	996	conhost.exe
Token: 34	996	conhost.exe
Token: 35	996	conhost.exe
Token: 36	996	conhost.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
1764	conhost.exe
996	conhost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 1576	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	85
PID 536 wrote to memory of 1576	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	85
PID 536 wrote to memory of 1576	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	85
PID 1576 wrote to memory of 4420	1576	cmd.exe	88
PID 1576 wrote to memory of 4420	1576	cmd.exe	88
PID 1576 wrote to memory of 4420	1576	cmd.exe	88
PID 536 wrote to memory of 1764	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	101
PID 536 wrote to memory of 1764	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	101
PID 536 wrote to memory of 1764	536	d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe	101
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102
PID 1764 wrote to memory of 996	1764	conhost.exe	102

C:\Users\Admin\AppData\Local\Temp\d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d50fa5e455466529f262a46e8e63bf0c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\lekHd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Console Window Host" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe" /f
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4420
- C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe
  "C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Users\Admin\AppData\Roaming\Console Window Host\conhost.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
    - Suspicious use of SetWindowsHookEx
    PID:996

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