darkcomet | 9643c55782c11cf35820f1da821e79a6bf3a397dfcf49d650e07b434df1cd09c

Analysis

max time kernel
147s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20250314-en
resource tags

arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system
submitted
20/03/2025, 07:10

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General

Target

JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Size

776KB
MD5

81d853f08d5bb336af8e434a637dcf8a
SHA1

c24c5107631a83a67af2f9aa859a69c88877c0ed
SHA256

9643c55782c11cf35820f1da821e79a6bf3a397dfcf49d650e07b434df1cd09c
SHA512

b68139303485b44a22a3589d456dcde42323713d92120fb67299f11498bc249d58e86c26a238272f59504f6a9d261322e1dbe95df042d785c1fe0f3dd193698b
SSDEEP

24576:sXQbZFH5ZxvC/Pf+OxTYozDlTmoXEfxAZv:sXQNfK3fm2DlSQ3

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Attributes

gencode
install
false
offline_keylogger
false
persistence
false

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:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.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_81d853f08d5bb336af8e434a637dcf8a.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-1-5-21-3920955164-3782810283-1225622749-1000\Control Panel\International\Geo\Nation	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe

Executes dropped EXE 2 IoCs

pid	Process
2820	winupdate.exe
1580	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-1-5-21-3920955164-3782810283-1225622749-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\AppData\\Roaming\\Windupdt\\winupdate.exe"	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.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_81d853f08d5bb336af8e434a637dcf8a.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.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 5420 set thread context of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 2820 set thread context of 1580	2820	winupdate.exe	90

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	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.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\Identifier	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	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_81d853f08d5bb336af8e434a637dcf8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeSecurityPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeTakeOwnershipPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeLoadDriverPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeSystemProfilePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeSystemtimePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeProfSingleProcessPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeIncBasePriorityPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeCreatePagefilePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeBackupPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeRestorePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeShutdownPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeDebugPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeSystemEnvironmentPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeChangeNotifyPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeRemoteShutdownPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeUndockPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeManageVolumePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeImpersonatePrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeCreateGlobalPrivilege	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: 33	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: 34	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: 35	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: 36	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
Token: SeIncreaseQuotaPrivilege	1580	winupdate.exe
Token: SeSecurityPrivilege	1580	winupdate.exe
Token: SeTakeOwnershipPrivilege	1580	winupdate.exe
Token: SeLoadDriverPrivilege	1580	winupdate.exe
Token: SeSystemProfilePrivilege	1580	winupdate.exe
Token: SeSystemtimePrivilege	1580	winupdate.exe
Token: SeProfSingleProcessPrivilege	1580	winupdate.exe
Token: SeIncBasePriorityPrivilege	1580	winupdate.exe
Token: SeCreatePagefilePrivilege	1580	winupdate.exe
Token: SeBackupPrivilege	1580	winupdate.exe
Token: SeRestorePrivilege	1580	winupdate.exe
Token: SeShutdownPrivilege	1580	winupdate.exe
Token: SeDebugPrivilege	1580	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1580	winupdate.exe
Token: SeChangeNotifyPrivilege	1580	winupdate.exe
Token: SeRemoteShutdownPrivilege	1580	winupdate.exe
Token: SeUndockPrivilege	1580	winupdate.exe
Token: SeManageVolumePrivilege	1580	winupdate.exe
Token: SeImpersonatePrivilege	1580	winupdate.exe
Token: SeCreateGlobalPrivilege	1580	winupdate.exe
Token: 33	1580	winupdate.exe
Token: 34	1580	winupdate.exe
Token: 35	1580	winupdate.exe
Token: 36	1580	winupdate.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
2820	winupdate.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 5420 wrote to memory of 6012	5420	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	87
PID 6012 wrote to memory of 2820	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	89
PID 6012 wrote to memory of 2820	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	89
PID 6012 wrote to memory of 2820	6012	JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe	89
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90
PID 2820 wrote to memory of 1580	2820	winupdate.exe	90

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.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:5420
- C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe
  "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_81d853f08d5bb336af8e434a637dcf8a.exe"
  2⤵
  - Modifies WinLogon for persistence
  - 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:6012
- - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
    "C:\Users\Admin\AppData\Roaming\Windupdt\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:2820
  - - C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe
      "C:\Users\Admin\AppData\Roaming\Windupdt\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
      PID:1580

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

C:\Users\Admin\AppData\Roaming\Windupdt\winupdate.exe

Filesize
776KB

MD5
81d853f08d5bb336af8e434a637dcf8a

SHA1
c24c5107631a83a67af2f9aa859a69c88877c0ed

SHA256
9643c55782c11cf35820f1da821e79a6bf3a397dfcf49d650e07b434df1cd09c

SHA512
b68139303485b44a22a3589d456dcde42323713d92120fb67299f11498bc249d58e86c26a238272f59504f6a9d261322e1dbe95df042d785c1fe0f3dd193698b

Download Submit
memory/1580-32-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-43-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-46-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-45-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-44-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-34-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-42-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-28-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-29-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-30-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-31-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-41-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-40-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-33-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-39-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-36-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-37-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-38-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/1580-35-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-4-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-3-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-20-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-2-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-7-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-6-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download
memory/6012-5-0x0000000000400000-0x00000000004C0000-memory.dmp

Filesize
768KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads