darkcomet | 44c919a3941674b93baf08d0a3566180b6f7bb6e44ebc51d4579a94876c56b6e

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
12/03/2025, 01:54

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General

Target
JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Size 916KB
Sample250312-cbvcystyev
SHA256 44c919a3941674b93baf08d0a3566180b6f7bb6e44ebc51d4579a94876c56b6e
MD5 686bb5a33bed3655500e1fd17aa27a8b
SHA1 201d5ba6550e037da7e4d8a982ea5d65970322ae
SHA512 d96908ec343ebba7df2527612a35e165d837eb7a550c0b4ea8b764cbbe034ab2373ada48c325c6cb3e100c99c9268fb864fec484c4f7a308f01c35b94fa4508e
SSDEEP 24576:vvFfmeO2OcAGC3zMEBGlOk1VbCmYjNGYTr+5s5VNATlV4d1cNe:nFNO2O7r3AEIN1V+Je4L+4/cNe
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

vaghavethepower.no-ip.biz:2020

Mutex

DC_MUTEX-U9VTDMU

Attributes

InstallPath
Windowsupdate\winupdate.exe
gencode
htW7n/HjEf$B
install
true
offline_keylogger
true
persistence
false
reg_key
winupdater

rc4.plain

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windowsupdate\\winupdate.exe"	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-250031470-1197856012-2659781506-1000\Control Panel\International\Geo\Nation	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe

Executes dropped EXE 2 IoCs

pid	Process
1936	winupdate.exe
2960	winupdate.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-1-5-21-250031470-1197856012-2659781506-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windowsupdate\\winupdate.exe"	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe

Maps connected drives based on registry 3 TTPs 4 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	winupdate.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	winupdate.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 1936 set thread context of 2960	1936	winupdate.exe	94

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	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeSecurityPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeTakeOwnershipPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeLoadDriverPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeSystemProfilePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeSystemtimePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeProfSingleProcessPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeIncBasePriorityPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeCreatePagefilePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeBackupPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeRestorePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeShutdownPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeDebugPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeSystemEnvironmentPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeChangeNotifyPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeRemoteShutdownPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeUndockPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeManageVolumePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeImpersonatePrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeCreateGlobalPrivilege	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: 33	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: 34	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: 35	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: 36	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
Token: SeIncreaseQuotaPrivilege	2960	winupdate.exe
Token: SeSecurityPrivilege	2960	winupdate.exe
Token: SeTakeOwnershipPrivilege	2960	winupdate.exe
Token: SeLoadDriverPrivilege	2960	winupdate.exe
Token: SeSystemProfilePrivilege	2960	winupdate.exe
Token: SeSystemtimePrivilege	2960	winupdate.exe
Token: SeProfSingleProcessPrivilege	2960	winupdate.exe
Token: SeIncBasePriorityPrivilege	2960	winupdate.exe
Token: SeCreatePagefilePrivilege	2960	winupdate.exe
Token: SeBackupPrivilege	2960	winupdate.exe
Token: SeRestorePrivilege	2960	winupdate.exe
Token: SeShutdownPrivilege	2960	winupdate.exe
Token: SeDebugPrivilege	2960	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2960	winupdate.exe
Token: SeChangeNotifyPrivilege	2960	winupdate.exe
Token: SeRemoteShutdownPrivilege	2960	winupdate.exe
Token: SeUndockPrivilege	2960	winupdate.exe
Token: SeManageVolumePrivilege	2960	winupdate.exe
Token: SeImpersonatePrivilege	2960	winupdate.exe
Token: SeCreateGlobalPrivilege	2960	winupdate.exe
Token: 33	2960	winupdate.exe
Token: 34	2960	winupdate.exe
Token: 35	2960	winupdate.exe
Token: 36	2960	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
1936	winupdate.exe
2960	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 5008 wrote to memory of 512	5008	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	87
PID 512 wrote to memory of 1936	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	93
PID 512 wrote to memory of 1936	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	93
PID 512 wrote to memory of 1936	512	JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe	93
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94
PID 1936 wrote to memory of 2960	1936	winupdate.exe	94

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5008
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
  C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_686bb5a33bed3655500e1fd17aa27a8b.exe
  2⤵
  - Modifies WinLogon for persistence
  - Drops file in Drivers directory
  - Checks BIOS information in registry
  - Checks computer location settings
  - Adds Run key to start application
  - 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:512
- - C:\Windowsupdate\winupdate.exe
    "C:\Windowsupdate\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Maps connected drives based on registry
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1936
  - - C:\Windowsupdate\winupdate.exe
      C:\Windowsupdate\winupdate.exe
      4⤵
      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:2960

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

winupdate.exe

Path C:\Windowsupdate\winupdate.exe
Size 916KB
SHA256 44c919a3941674b93baf08d0a3566180b6f7bb6e44ebc51d4579a94876c56b6e
MD5 686bb5a33bed3655500e1fd17aa27a8b
SHA1 201d5ba6550e037da7e4d8a982ea5d65970322ae
SHA512 d96908ec343ebba7df2527612a35e165d837eb7a550c0b4ea8b764cbbe034ab2373ada48c325c6cb3e100c99c9268fb864fec484c4f7a308f01c35b94fa4508e
SSDEEP 24576:vvFfmeO2OcAGC3zMEBGlOk1VbCmYjNGYTr+5s5VNATlV4d1cNe:nFNO2O7r3AEIN1V+Je4L+4/cNe
MD5 SHA1 SHA512 SSDEEP

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memory/512-3-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-2-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-4-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-5-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-6-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-7-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/512-20-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-35-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-40-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-31-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-34-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-33-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-32-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-30-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-36-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-37-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-38-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-39-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-29-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-41-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-42-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-43-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-44-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-45-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-46-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-47-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-48-0x0000000000400000-0x00000000004C5000-memory.dmp

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memory/2960-49-0x0000000000400000-0x00000000004C5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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