darkcomet | 92ac4c9a8450b75edb5c0cc61f690d65da34ad347a4f313d2334b602f4f0d9b2

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-01-2025 18:49

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General

Target

JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Size

733KB
MD5

6ec2be88419a7a21ae7267bac9dcd84d
SHA1

7200e1b2f7949b8db675dd86a7f69252add731ce
SHA256

92ac4c9a8450b75edb5c0cc61f690d65da34ad347a4f313d2334b602f4f0d9b2
SHA512

4d1091ba2b63ee96b22a02dcb8e47f6fc51f1443146ef77795cb0b7f6d7a83cadb712309078d7a0ca84cd87614dd0853d49f60d10877c56b50aa34e8d2a560f9
SSDEEP

12288:dpwABK90BOe/x9lPAYvxPQVjdsAY2XjWlnlpTMMXG91uhKIXn/:fwAcu99lPzvxP+Bsz2XjWTRMQckkIXn

Score

10^/10

darkcomet discovery persistence rat trojan

Malware Config

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 2 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:\\Windows\\system32\\Win\\winupdate.exe"	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\Win\\winupdate.exe,C:\\Windows\\system32\\Win\\winupdate.exe"	winupdate.exe

Checks BIOS information in registry 2 TTPs 3 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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe

Executes dropped EXE 1 IoCs

pid	Process
3640	winupdate.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Win\\winupdate.exe"	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Win\\winupdate.exe"	winupdate.exe

Drops file in System32 directory 6 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Win\winupdate.exe	winupdate.exe
File opened for modification	C:\Windows\SysWOW64\Win\winupdate.exe	winupdate.exe
File opened for modification	C:\Windows\SysWOW64\Win\	winupdate.exe
File created	C:\Windows\SysWOW64\Win\winupdate.exe	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
File opened for modification	C:\Windows\SysWOW64\Win\winupdate.exe	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
File opened for modification	C:\Windows\SysWOW64\Win\	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3640 set thread context of 528	3640	winupdate.exe	84

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	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 12 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	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.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\VendorIdentifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
528	explorer.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeSecurityPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeTakeOwnershipPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeLoadDriverPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeSystemProfilePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeSystemtimePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeProfSingleProcessPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeIncBasePriorityPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeCreatePagefilePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeBackupPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeRestorePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeShutdownPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeDebugPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeSystemEnvironmentPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeChangeNotifyPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeRemoteShutdownPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeUndockPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeManageVolumePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeImpersonatePrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeCreateGlobalPrivilege	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: 33	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: 34	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: 35	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: 36	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
Token: SeIncreaseQuotaPrivilege	3640	winupdate.exe
Token: SeSecurityPrivilege	3640	winupdate.exe
Token: SeTakeOwnershipPrivilege	3640	winupdate.exe
Token: SeLoadDriverPrivilege	3640	winupdate.exe
Token: SeSystemProfilePrivilege	3640	winupdate.exe
Token: SeSystemtimePrivilege	3640	winupdate.exe
Token: SeProfSingleProcessPrivilege	3640	winupdate.exe
Token: SeIncBasePriorityPrivilege	3640	winupdate.exe
Token: SeCreatePagefilePrivilege	3640	winupdate.exe
Token: SeBackupPrivilege	3640	winupdate.exe
Token: SeRestorePrivilege	3640	winupdate.exe
Token: SeShutdownPrivilege	3640	winupdate.exe
Token: SeDebugPrivilege	3640	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3640	winupdate.exe
Token: SeChangeNotifyPrivilege	3640	winupdate.exe
Token: SeRemoteShutdownPrivilege	3640	winupdate.exe
Token: SeUndockPrivilege	3640	winupdate.exe
Token: SeManageVolumePrivilege	3640	winupdate.exe
Token: SeImpersonatePrivilege	3640	winupdate.exe
Token: SeCreateGlobalPrivilege	3640	winupdate.exe
Token: 33	3640	winupdate.exe
Token: 34	3640	winupdate.exe
Token: 35	3640	winupdate.exe
Token: 36	3640	winupdate.exe
Token: SeIncreaseQuotaPrivilege	528	explorer.exe
Token: SeSecurityPrivilege	528	explorer.exe
Token: SeTakeOwnershipPrivilege	528	explorer.exe
Token: SeLoadDriverPrivilege	528	explorer.exe
Token: SeSystemProfilePrivilege	528	explorer.exe
Token: SeSystemtimePrivilege	528	explorer.exe
Token: SeProfSingleProcessPrivilege	528	explorer.exe
Token: SeIncBasePriorityPrivilege	528	explorer.exe
Token: SeCreatePagefilePrivilege	528	explorer.exe
Token: SeBackupPrivilege	528	explorer.exe
Token: SeRestorePrivilege	528	explorer.exe
Token: SeShutdownPrivilege	528	explorer.exe
Token: SeDebugPrivilege	528	explorer.exe
Token: SeSystemEnvironmentPrivilege	528	explorer.exe
Token: SeChangeNotifyPrivilege	528	explorer.exe
Token: SeRemoteShutdownPrivilege	528	explorer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
528	explorer.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 3068	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	82
PID 1340 wrote to memory of 3068	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	82
PID 1340 wrote to memory of 3068	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	82
PID 1340 wrote to memory of 3640	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	83
PID 1340 wrote to memory of 3640	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	83
PID 1340 wrote to memory of 3640	1340	JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe	83
PID 3640 wrote to memory of 528	3640	winupdate.exe	84
PID 3640 wrote to memory of 528	3640	winupdate.exe	84
PID 3640 wrote to memory of 528	3640	winupdate.exe	84
PID 3640 wrote to memory of 528	3640	winupdate.exe	84
PID 3640 wrote to memory of 528	3640	winupdate.exe	84

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ec2be88419a7a21ae7267bac9dcd84d.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Checks computer location settings
- 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
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1340
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  PID:3068
- C:\Windows\SysWOW64\Win\winupdate.exe
  "C:\Windows\system32\Win\winupdate.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - 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:3640
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - Checks BIOS information in registry
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:528

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

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:\Windows\SysWOW64\Win\winupdate.exe

Filesize
733KB

MD5
6ec2be88419a7a21ae7267bac9dcd84d

SHA1
7200e1b2f7949b8db675dd86a7f69252add731ce

SHA256
92ac4c9a8450b75edb5c0cc61f690d65da34ad347a4f313d2334b602f4f0d9b2

SHA512
4d1091ba2b63ee96b22a02dcb8e47f6fc51f1443146ef77795cb0b7f6d7a83cadb712309078d7a0ca84cd87614dd0853d49f60d10877c56b50aa34e8d2a560f9

Download Submit
memory/528-42-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-41-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-47-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-37-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-38-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-39-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-43-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-44-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-45-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/528-46-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/1340-0-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/1340-35-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3640-40-0x0000000000400000-0x00000000004C8000-memory.dmp

Filesize
800KB

Download
memory/3640-36-0x0000000002010000-0x0000000002011000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads