darkcomet | d53360a7a9f909104bde9e930fd045933bcd3bedc9531bebf4d90a7100f48792

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
15-10-2024 07:55

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General

Target

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Size

256KB
MD5

469a9e2b56bbc7b0dcb4e37adeddb4ce
SHA1

356b9182b7c58949c9db0f96b195147364d2339d
SHA256

d53360a7a9f909104bde9e930fd045933bcd3bedc9531bebf4d90a7100f48792
SHA512

c231d82919e17c2271feb98e68e0920b0bcb7334cb3f06df4695e8aa9291583267fb17cc01d708899a051b3c9fdfa9d1c5a8c744d34383faa92271caad580ce6
SSDEEP

6144:BVfA9MoSFsSs1ug2L8cpT6pTDmuI8SPxjkium8Els:BBMMoSFsSSSh9pJrls

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Processes:

winupdate.exe

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

Processes:

winupdate.exe

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

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.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

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid	Process
3328	winupdate.exe

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

winupdate.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exewinupdate.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\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

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exewinupdate.execmd.exePING.EXE

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.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

Processes:

cmd.exePING.EXE

pid	Process
936	cmd.exe
3344	PING.EXE

Modifies registry class 1 IoCs

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

Processes:

PING.EXE

pid	Process
3344	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid	Process
3328	winupdate.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exewinupdate.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeSecurityPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeBackupPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeRestorePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeShutdownPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeDebugPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeUndockPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: 33	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: 34	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: 35	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: 36	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3328	winupdate.exe
Token: SeSecurityPrivilege	3328	winupdate.exe
Token: SeTakeOwnershipPrivilege	3328	winupdate.exe
Token: SeLoadDriverPrivilege	3328	winupdate.exe
Token: SeSystemProfilePrivilege	3328	winupdate.exe
Token: SeSystemtimePrivilege	3328	winupdate.exe
Token: SeProfSingleProcessPrivilege	3328	winupdate.exe
Token: SeIncBasePriorityPrivilege	3328	winupdate.exe
Token: SeCreatePagefilePrivilege	3328	winupdate.exe
Token: SeBackupPrivilege	3328	winupdate.exe
Token: SeRestorePrivilege	3328	winupdate.exe
Token: SeShutdownPrivilege	3328	winupdate.exe
Token: SeDebugPrivilege	3328	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3328	winupdate.exe
Token: SeChangeNotifyPrivilege	3328	winupdate.exe
Token: SeRemoteShutdownPrivilege	3328	winupdate.exe
Token: SeUndockPrivilege	3328	winupdate.exe
Token: SeManageVolumePrivilege	3328	winupdate.exe
Token: SeImpersonatePrivilege	3328	winupdate.exe
Token: SeCreateGlobalPrivilege	3328	winupdate.exe
Token: 33	3328	winupdate.exe
Token: 34	3328	winupdate.exe
Token: 35	3328	winupdate.exe
Token: 36	3328	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winupdate.exe

pid	Process
3328	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.execmd.exe

description	pid	Process	procid_target
PID 1344 wrote to memory of 3328	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	92
PID 1344 wrote to memory of 3328	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	92
PID 1344 wrote to memory of 3328	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	92
PID 1344 wrote to memory of 936	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	93
PID 1344 wrote to memory of 936	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	93
PID 1344 wrote to memory of 936	1344	469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe	93
PID 936 wrote to memory of 3344	936	cmd.exe	95
PID 936 wrote to memory of 3344	936	cmd.exe	95
PID 936 wrote to memory of 3344	936	cmd.exe	95

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

Processes:

winupdate.exe

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\469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.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:1344
- 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:3328
- 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\469a9e2b56bbc7b0dcb4e37adeddb4ce_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:936
- - 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:3344

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
256KB

MD5
469a9e2b56bbc7b0dcb4e37adeddb4ce

SHA1
356b9182b7c58949c9db0f96b195147364d2339d

SHA256
d53360a7a9f909104bde9e930fd045933bcd3bedc9531bebf4d90a7100f48792

SHA512
c231d82919e17c2271feb98e68e0920b0bcb7334cb3f06df4695e8aa9291583267fb17cc01d708899a051b3c9fdfa9d1c5a8c744d34383faa92271caad580ce6

Download Submit
memory/1344-0-0x0000000000400000-0x00000000004C6000-memory.dmp

Filesize
792KB

Download
memory/1344-1-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/1344-38-0x0000000000400000-0x00000000004C6000-memory.dmp

Filesize
792KB

Download
memory/3328-39-0x00000000022D0000-0x00000000022D1000-memory.dmp

Filesize
4KB

Download
memory/3328-40-0x0000000000400000-0x00000000004C6000-memory.dmp

Filesize
792KB

Download
memory/3328-43-0x0000000000400000-0x00000000004C6000-memory.dmp

Filesize
792KB

Download