darkcomet | 0a43127615cb75db69dfbf202e22d33e7aced03c236a9dcc948ae3dd18fa8626

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-12-2024 17:32

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General

Target

d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Size

541KB
MD5

d835c39082e0e5de09ff092a3d5a1e0a
SHA1

9f515a5293a37e5b90342ef7b660fa5dee2d9518
SHA256

0a43127615cb75db69dfbf202e22d33e7aced03c236a9dcc948ae3dd18fa8626
SHA512

a5d17a922013c2df001dbdaccba49fb1a70aa2d711d2f695dabd6d31759eee35b579b02e4930367c6216d2da94c2cea75d0c63e3a6f2eaddf2823f2f5ec482f6
SSDEEP

12288:YaNqMd0QZh9uEK/5P/EiKrbVVE2VihK/BBHY9sbzHLK:YED0QZh9ur4fc2Vik/Bl5zrK

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:\\Users\\Admin\\Documents\\Windupdt\\winupdate.exe"	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	winupdate.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	winupdate.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	winupdate.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

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe

Executes dropped EXE 2 IoCs

pid	Process
4896	winupdate.exe
3120	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\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 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Users\\Admin\\Documents\\Windupdt\\winupdate.exe"	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3576 set thread context of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 4896 set thread context of 3120	4896	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 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winupdate.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
696	cmd.exe
224	PING.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
224	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeSecurityPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeSystemtimePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeBackupPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeRestorePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeShutdownPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeDebugPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeUndockPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeManageVolumePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeImpersonatePrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: 33	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: 34	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: 35	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: 36	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	3120	winupdate.exe
Token: SeSecurityPrivilege	3120	winupdate.exe
Token: SeTakeOwnershipPrivilege	3120	winupdate.exe
Token: SeLoadDriverPrivilege	3120	winupdate.exe
Token: SeSystemProfilePrivilege	3120	winupdate.exe
Token: SeSystemtimePrivilege	3120	winupdate.exe
Token: SeProfSingleProcessPrivilege	3120	winupdate.exe
Token: SeIncBasePriorityPrivilege	3120	winupdate.exe
Token: SeCreatePagefilePrivilege	3120	winupdate.exe
Token: SeBackupPrivilege	3120	winupdate.exe
Token: SeRestorePrivilege	3120	winupdate.exe
Token: SeShutdownPrivilege	3120	winupdate.exe
Token: SeDebugPrivilege	3120	winupdate.exe
Token: SeSystemEnvironmentPrivilege	3120	winupdate.exe
Token: SeChangeNotifyPrivilege	3120	winupdate.exe
Token: SeRemoteShutdownPrivilege	3120	winupdate.exe
Token: SeUndockPrivilege	3120	winupdate.exe
Token: SeManageVolumePrivilege	3120	winupdate.exe
Token: SeImpersonatePrivilege	3120	winupdate.exe
Token: SeCreateGlobalPrivilege	3120	winupdate.exe
Token: 33	3120	winupdate.exe
Token: 34	3120	winupdate.exe
Token: 35	3120	winupdate.exe
Token: 36	3120	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3120	winupdate.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 3576 wrote to memory of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 3576 wrote to memory of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 3576 wrote to memory of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 3576 wrote to memory of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 3576 wrote to memory of 4624	3576	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	83
PID 4624 wrote to memory of 4896	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	91
PID 4624 wrote to memory of 4896	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	91
PID 4624 wrote to memory of 4896	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	91
PID 4624 wrote to memory of 696	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	92
PID 4624 wrote to memory of 696	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	92
PID 4624 wrote to memory of 696	4624	d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe	92
PID 4896 wrote to memory of 3120	4896	winupdate.exe	94
PID 4896 wrote to memory of 3120	4896	winupdate.exe	94
PID 4896 wrote to memory of 3120	4896	winupdate.exe	94
PID 696 wrote to memory of 224	696	cmd.exe	95
PID 696 wrote to memory of 224	696	cmd.exe	95
PID 696 wrote to memory of 224	696	cmd.exe	95
PID 4896 wrote to memory of 3120	4896	winupdate.exe	94
PID 4896 wrote to memory of 3120	4896	winupdate.exe	94

C:\Users\Admin\AppData\Local\Temp\d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3576
- C:\Users\Admin\AppData\Local\Temp\d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
  C:\Users\Admin\AppData\Local\Temp\d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe
  2⤵
  - Modifies WinLogon for persistence
  - 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:4624
- - C:\Users\Admin\Documents\Windupdt\winupdate.exe
    "C:\Users\Admin\Documents\Windupdt\winupdate.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4896
  - - C:\Users\Admin\Documents\Windupdt\winupdate.exe
      C:\Users\Admin\Documents\Windupdt\winupdate.exe
      4⤵
      Modifies firewall policy service
      Modifies security service
      Windows security bypass
      Disables RegEdit via registry modification
      Executes dropped EXE
      Windows security modification
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3120
- - 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\d835c39082e0e5de09ff092a3d5a1e0a_JaffaCakes118.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:696
  - - C:\Windows\SysWOW64\PING.EXE
      ping 127.0.0.1 -n 5
      4⤵
      System Location Discovery: System Language Discovery
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:224

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 System Firewall

T1562.004

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:\Users\Admin\Documents\Windupdt\winupdate.exe

Filesize
541KB

MD5
d835c39082e0e5de09ff092a3d5a1e0a

SHA1
9f515a5293a37e5b90342ef7b660fa5dee2d9518

SHA256
0a43127615cb75db69dfbf202e22d33e7aced03c236a9dcc948ae3dd18fa8626

SHA512
a5d17a922013c2df001dbdaccba49fb1a70aa2d711d2f695dabd6d31759eee35b579b02e4930367c6216d2da94c2cea75d0c63e3a6f2eaddf2823f2f5ec482f6

Download Submit
memory/3120-48-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3120-53-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3120-51-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3120-52-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/3576-5-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download
memory/3576-2-0x000000000061A000-0x000000000062E000-memory.dmp

Filesize
80KB

Download
memory/3576-1-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download
memory/3576-7-0x000000000061A000-0x000000000062E000-memory.dmp

Filesize
80KB

Download
memory/3576-0-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download
memory/4624-4-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/4624-3-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/4624-6-0x0000000000400000-0x00000000004CC000-memory.dmp

Filesize
816KB

Download
memory/4896-44-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download
memory/4896-50-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download
memory/4896-43-0x0000000000600000-0x0000000000648000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads