darkcomet | 110c0ac80f4d6a7e73183cf5a98f83440943afe69abca9a572ca4a4e54de7d13

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\IDMAN.exe"	CRACKED.EXE

Modifies firewall policy service 3 TTPs 3 IoCs

defense_evasion

Modify Registry

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	IDMAN.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	IDMAN.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	IDMAN.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	NanoCore.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\Control Panel\International\Geo\Nation	CRACKED.EXE

Executes dropped EXE 3 IoCs

pid	Process
1948	CRACKED.EXE
2160	NANOCORE.EXE
4004	IDMAN.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\IDMAN = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\IDMAN.exe"	CRACKED.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1121399784-3202166597-3503557106-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\IDMAN = "C:\\Users\\Admin\\AppData\\Roaming\\MSDCSC\\IDMAN.exe"	IDMAN.exe

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 4 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NanoCore.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CRACKED.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	IDMAN.exe

Checks processor information in registry 2 TTPs 3 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	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4004	IDMAN.exe

Suspicious use of AdjustPrivilegeToken 50 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1948	CRACKED.EXE
Token: SeSecurityPrivilege	1948	CRACKED.EXE
Token: SeTakeOwnershipPrivilege	1948	CRACKED.EXE
Token: SeLoadDriverPrivilege	1948	CRACKED.EXE
Token: SeSystemProfilePrivilege	1948	CRACKED.EXE
Token: SeSystemtimePrivilege	1948	CRACKED.EXE
Token: SeProfSingleProcessPrivilege	1948	CRACKED.EXE
Token: SeIncBasePriorityPrivilege	1948	CRACKED.EXE
Token: SeCreatePagefilePrivilege	1948	CRACKED.EXE
Token: SeBackupPrivilege	1948	CRACKED.EXE
Token: SeRestorePrivilege	1948	CRACKED.EXE
Token: SeShutdownPrivilege	1948	CRACKED.EXE
Token: SeDebugPrivilege	1948	CRACKED.EXE
Token: SeSystemEnvironmentPrivilege	1948	CRACKED.EXE
Token: SeChangeNotifyPrivilege	1948	CRACKED.EXE
Token: SeRemoteShutdownPrivilege	1948	CRACKED.EXE
Token: SeUndockPrivilege	1948	CRACKED.EXE
Token: SeManageVolumePrivilege	1948	CRACKED.EXE
Token: SeImpersonatePrivilege	1948	CRACKED.EXE
Token: SeCreateGlobalPrivilege	1948	CRACKED.EXE
Token: 33	1948	CRACKED.EXE
Token: 34	1948	CRACKED.EXE
Token: 35	1948	CRACKED.EXE
Token: 36	1948	CRACKED.EXE
Token: SeIncreaseQuotaPrivilege	4004	IDMAN.exe
Token: SeSecurityPrivilege	4004	IDMAN.exe
Token: SeTakeOwnershipPrivilege	4004	IDMAN.exe
Token: SeLoadDriverPrivilege	4004	IDMAN.exe
Token: SeSystemProfilePrivilege	4004	IDMAN.exe
Token: SeSystemtimePrivilege	4004	IDMAN.exe
Token: SeProfSingleProcessPrivilege	4004	IDMAN.exe
Token: SeIncBasePriorityPrivilege	4004	IDMAN.exe
Token: SeCreatePagefilePrivilege	4004	IDMAN.exe
Token: SeBackupPrivilege	4004	IDMAN.exe
Token: SeRestorePrivilege	4004	IDMAN.exe
Token: SeShutdownPrivilege	4004	IDMAN.exe
Token: SeDebugPrivilege	4004	IDMAN.exe
Token: SeSystemEnvironmentPrivilege	4004	IDMAN.exe
Token: SeChangeNotifyPrivilege	4004	IDMAN.exe
Token: SeRemoteShutdownPrivilege	4004	IDMAN.exe
Token: SeUndockPrivilege	4004	IDMAN.exe
Token: SeManageVolumePrivilege	4004	IDMAN.exe
Token: SeImpersonatePrivilege	4004	IDMAN.exe
Token: SeCreateGlobalPrivilege	4004	IDMAN.exe
Token: 33	4004	IDMAN.exe
Token: 34	4004	IDMAN.exe
Token: 35	4004	IDMAN.exe
Token: 36	4004	IDMAN.exe
Token: SeBackupPrivilege	4276	dw20.exe
Token: SeBackupPrivilege	4276	dw20.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4004	IDMAN.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 884 wrote to memory of 1948	884	NanoCore.exe	87
PID 884 wrote to memory of 1948	884	NanoCore.exe	87
PID 884 wrote to memory of 1948	884	NanoCore.exe	87
PID 884 wrote to memory of 2160	884	NanoCore.exe	88
PID 884 wrote to memory of 2160	884	NanoCore.exe	88
PID 1948 wrote to memory of 4004	1948	CRACKED.EXE	89
PID 1948 wrote to memory of 4004	1948	CRACKED.EXE	89
PID 1948 wrote to memory of 4004	1948	CRACKED.EXE	89
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 4004 wrote to memory of 5064	4004	IDMAN.exe	90
PID 2160 wrote to memory of 4276	2160	NANOCORE.EXE	91
PID 2160 wrote to memory of 4276	2160	NANOCORE.EXE	91

C:\Users\Admin\AppData\Local\Temp\NanoCore-master\sample\NanoCore.exe
"C:\Users\Admin\AppData\Local\Temp\NanoCore-master\sample\NanoCore.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:884
- C:\Users\Admin\AppData\Roaming\CRACKED.EXE
  "C:\Users\Admin\AppData\Roaming\CRACKED.EXE"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Users\Admin\AppData\Roaming\MSDCSC\IDMAN.exe
    "C:\Users\Admin\AppData\Roaming\MSDCSC\IDMAN.exe"
    3⤵
    - Modifies firewall policy service
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4004
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:5064
- C:\Users\Admin\AppData\Roaming\NANOCORE.EXE
  "C:\Users\Admin\AppData\Roaming\NANOCORE.EXE"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 1200
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:4276

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

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery