darkcomet | a37ac7f3d02f5d8b616ce794f064257022199150ed96319d8ff1a8ef7d29ad78

System Information Discovery

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

Executes dropped EXE 2 IoCs

pid	Process
2140	NCHWUHNfOBkYP.exe
2936	server.exe

Loads dropped DLL 2 IoCs

pid	Process
3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe
2140	NCHWUHNfOBkYP.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\server = "C:\\Windows\\system32\\Dosya\\server.exe"	NCHWUHNfOBkYP.exe

Drops file in System32 directory 3 IoCs

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

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3016 set thread context of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 2140 set thread context of 3036	2140	NCHWUHNfOBkYP.exe	30

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	NCHWUHNfOBkYP.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	NCHWUHNfOBkYP.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	NCHWUHNfOBkYP.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	NCHWUHNfOBkYP.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	NCHWUHNfOBkYP.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	NCHWUHNfOBkYP.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeSecurityPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeTakeOwnershipPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeLoadDriverPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeSystemProfilePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeSystemtimePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeProfSingleProcessPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeIncBasePriorityPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeCreatePagefilePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeBackupPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeRestorePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeShutdownPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeDebugPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeSystemEnvironmentPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeChangeNotifyPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeRemoteShutdownPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeUndockPrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeManageVolumePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeImpersonatePrivilege	2140	NCHWUHNfOBkYP.exe
Token: SeCreateGlobalPrivilege	2140	NCHWUHNfOBkYP.exe
Token: 33	2140	NCHWUHNfOBkYP.exe
Token: 34	2140	NCHWUHNfOBkYP.exe
Token: 35	2140	NCHWUHNfOBkYP.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 3016 wrote to memory of 2140	3016	7f472561024a84c52505094c52870740_JaffaCakes118.exe	29
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 3036	2140	NCHWUHNfOBkYP.exe	30
PID 2140 wrote to memory of 2936	2140	NCHWUHNfOBkYP.exe	32
PID 2140 wrote to memory of 2936	2140	NCHWUHNfOBkYP.exe	32
PID 2140 wrote to memory of 2936	2140	NCHWUHNfOBkYP.exe	32
PID 2140 wrote to memory of 2936	2140	NCHWUHNfOBkYP.exe	32

C:\Users\Admin\AppData\Local\Temp\7f472561024a84c52505094c52870740_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7f472561024a84c52505094c52870740_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\NCHWUHNfOBkYP.exe
  C:\Users\Admin\AppData\Local\Temp\NCHWUHNfOBkYP.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Loads dropped DLL
  - 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:2140
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    PID:3036
- - C:\Windows\SysWOW64\Dosya\server.exe
    "C:\Windows\system32\Dosya\server.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2936

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

4

System Location Discovery

T1614

System Language Discovery