darkcomet | a37ac7f3d02f5d8b616ce794f064257022199150ed96319d8ff1a8ef7d29ad78

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	HUrJxbpor.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	HUrJxbpor.exe

Executes dropped EXE 2 IoCs

pid	Process
5060	HUrJxbpor.exe
4172	server.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\server = "C:\\Windows\\system32\\Dosya\\server.exe"	HUrJxbpor.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Dosya\server.exe	HUrJxbpor.exe
File opened for modification	C:\Windows\SysWOW64\Dosya\server.exe	HUrJxbpor.exe
File opened for modification	C:\Windows\SysWOW64\Dosya\	HUrJxbpor.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3224 set thread context of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87

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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7f472561024a84c52505094c52870740_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	HUrJxbpor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.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	HUrJxbpor.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	HUrJxbpor.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	HUrJxbpor.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	HUrJxbpor.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	HUrJxbpor.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	5060	HUrJxbpor.exe
Token: SeSecurityPrivilege	5060	HUrJxbpor.exe
Token: SeTakeOwnershipPrivilege	5060	HUrJxbpor.exe
Token: SeLoadDriverPrivilege	5060	HUrJxbpor.exe
Token: SeSystemProfilePrivilege	5060	HUrJxbpor.exe
Token: SeSystemtimePrivilege	5060	HUrJxbpor.exe
Token: SeProfSingleProcessPrivilege	5060	HUrJxbpor.exe
Token: SeIncBasePriorityPrivilege	5060	HUrJxbpor.exe
Token: SeCreatePagefilePrivilege	5060	HUrJxbpor.exe
Token: SeBackupPrivilege	5060	HUrJxbpor.exe
Token: SeRestorePrivilege	5060	HUrJxbpor.exe
Token: SeShutdownPrivilege	5060	HUrJxbpor.exe
Token: SeDebugPrivilege	5060	HUrJxbpor.exe
Token: SeSystemEnvironmentPrivilege	5060	HUrJxbpor.exe
Token: SeChangeNotifyPrivilege	5060	HUrJxbpor.exe
Token: SeRemoteShutdownPrivilege	5060	HUrJxbpor.exe
Token: SeUndockPrivilege	5060	HUrJxbpor.exe
Token: SeManageVolumePrivilege	5060	HUrJxbpor.exe
Token: SeImpersonatePrivilege	5060	HUrJxbpor.exe
Token: SeCreateGlobalPrivilege	5060	HUrJxbpor.exe
Token: 33	5060	HUrJxbpor.exe
Token: 34	5060	HUrJxbpor.exe
Token: 35	5060	HUrJxbpor.exe
Token: 36	5060	HUrJxbpor.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 3224 wrote to memory of 5060	3224	7f472561024a84c52505094c52870740_JaffaCakes118.exe	87
PID 5060 wrote to memory of 3960	5060	HUrJxbpor.exe	90
PID 5060 wrote to memory of 3960	5060	HUrJxbpor.exe	90
PID 5060 wrote to memory of 3960	5060	HUrJxbpor.exe	90
PID 5060 wrote to memory of 4172	5060	HUrJxbpor.exe	92
PID 5060 wrote to memory of 4172	5060	HUrJxbpor.exe	92
PID 5060 wrote to memory of 4172	5060	HUrJxbpor.exe	92

C:\Users\Admin\AppData\Local\Temp\7f472561024a84c52505094c52870740_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7f472561024a84c52505094c52870740_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3224
- C:\Users\Admin\AppData\Local\Temp\HUrJxbpor.exe
  C:\Users\Admin\AppData\Local\Temp\HUrJxbpor.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - 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:5060
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:3960
- - C:\Windows\SysWOW64\Dosya\server.exe
    "C:\Windows\system32\Dosya\server.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4172

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