darkcomet | 44d190ef0a39280a4d697f539081774eed3c1fe85ec5625437a73649338b7fe4

Analysis

max time kernel
148s
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
02/01/2025, 21:56

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General

Target

JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Size

804KB
MD5

6872b36cf853a8bb8059ddfa12d93570
SHA1

9b22f8a53792b5677fdc9ded784c465732211f27
SHA256

44d190ef0a39280a4d697f539081774eed3c1fe85ec5625437a73649338b7fe4
SHA512

a4807320d883fa781a065b1dba27cca24c7b7782677d0a09fa1c894e46f8e2b6ebe67ab0a2f79690fc74ea2d5e920ba93aa4380ae37f8d1298ee9b12a831424c
SSDEEP

12288:r6A84PaHhfD/tV9sj5NKR0pau9XGyu2qBVGLQyTPfhils:OAmBpVKHu0Mu9Xo20VGLVP5

Score

10^/10

darkcomet discovery evasion 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 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:\\Windupdt\\winupdate.exe"	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winupdate.exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe

Executes dropped EXE 1 IoCs

pid	Process
1948	winupdate.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	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-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	winupdate.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	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4484	cmd.exe
552	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
552	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1948	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeSecurityPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeTakeOwnershipPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeLoadDriverPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeSystemProfilePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeSystemtimePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeProfSingleProcessPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeIncBasePriorityPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeCreatePagefilePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeBackupPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeRestorePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeShutdownPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeDebugPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeSystemEnvironmentPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeChangeNotifyPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeRemoteShutdownPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeUndockPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeManageVolumePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeImpersonatePrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeCreateGlobalPrivilege	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: 33	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: 34	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: 35	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: 36	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
Token: SeIncreaseQuotaPrivilege	1948	winupdate.exe
Token: SeSecurityPrivilege	1948	winupdate.exe
Token: SeTakeOwnershipPrivilege	1948	winupdate.exe
Token: SeLoadDriverPrivilege	1948	winupdate.exe
Token: SeSystemProfilePrivilege	1948	winupdate.exe
Token: SeSystemtimePrivilege	1948	winupdate.exe
Token: SeProfSingleProcessPrivilege	1948	winupdate.exe
Token: SeIncBasePriorityPrivilege	1948	winupdate.exe
Token: SeCreatePagefilePrivilege	1948	winupdate.exe
Token: SeBackupPrivilege	1948	winupdate.exe
Token: SeRestorePrivilege	1948	winupdate.exe
Token: SeShutdownPrivilege	1948	winupdate.exe
Token: SeDebugPrivilege	1948	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1948	winupdate.exe
Token: SeChangeNotifyPrivilege	1948	winupdate.exe
Token: SeRemoteShutdownPrivilege	1948	winupdate.exe
Token: SeUndockPrivilege	1948	winupdate.exe
Token: SeManageVolumePrivilege	1948	winupdate.exe
Token: SeImpersonatePrivilege	1948	winupdate.exe
Token: SeCreateGlobalPrivilege	1948	winupdate.exe
Token: 33	1948	winupdate.exe
Token: 34	1948	winupdate.exe
Token: 35	1948	winupdate.exe
Token: 36	1948	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1948	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4108 wrote to memory of 1948	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	83
PID 4108 wrote to memory of 1948	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	83
PID 4108 wrote to memory of 1948	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	83
PID 4108 wrote to memory of 4484	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	84
PID 4108 wrote to memory of 4484	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	84
PID 4108 wrote to memory of 4484	4108	JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe	84
PID 4484 wrote to memory of 552	4484	cmd.exe	86
PID 4484 wrote to memory of 552	4484	cmd.exe	86
PID 4484 wrote to memory of 552	4484	cmd.exe	86

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	winupdate.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	winupdate.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4108
- C:\Windupdt\winupdate.exe
  "C:\Windupdt\winupdate.exe"
  2⤵
  - Modifies security service
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - System policy modification
  PID:1948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6872b36cf853a8bb8059ddfa12d93570.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:4484
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 5
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:552

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 Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windupdt\winupdate.exe

Filesize
804KB

MD5
6872b36cf853a8bb8059ddfa12d93570

SHA1
9b22f8a53792b5677fdc9ded784c465732211f27

SHA256
44d190ef0a39280a4d697f539081774eed3c1fe85ec5625437a73649338b7fe4

SHA512
a4807320d883fa781a065b1dba27cca24c7b7782677d0a09fa1c894e46f8e2b6ebe67ab0a2f79690fc74ea2d5e920ba93aa4380ae37f8d1298ee9b12a831424c

Download Submit
memory/1948-38-0x00000000006F0000-0x00000000006F1000-memory.dmp

Filesize
4KB

Download
memory/1948-39-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/4108-0-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/4108-1-0x00000000007A0000-0x00000000007A1000-memory.dmp

Filesize
4KB

Download
memory/4108-37-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads