darkcomet | b4a2d5dc782af456e9d2c3703cdabb4e3fe501c0eae77361af57d97285042782

Analysis

max time kernel
150s
max time network
146s
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, 09:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Size

742KB
MD5

643aeee51a1f63290748a405d15a37d0
SHA1

f585d6199e88ca686bd52d922eb939d74ba83611
SHA256

b4a2d5dc782af456e9d2c3703cdabb4e3fe501c0eae77361af57d97285042782
SHA512

cfac2c01b577be39ce578d32e4b1360ea84e2498d132dca02126add2c655ec8e0cca4650206d954eb57e615d78b28974a8b66ba2cd2f0dbfc3c6820761fe086f
SSDEEP

12288:IFLlJnnbWOtz6sVJhvaz1Qc/WdI//vfM4qwrbkniafLo6vUTyl0w/q9jJ:o3nbWmJVJFwSddIXvfhqbiaxvRxq9

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\\MSDCSC\\msdcsc.exe"	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.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\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	iexplore.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe

Executes dropped EXE 1 IoCs

pid	Process
420	msdcsc.exe

Windows security modification 2 TTPs 1 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"	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 420 set thread context of 3616	420	msdcsc.exe	87

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 5 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_643aeee51a1f63290748a405d15a37d0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
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	iexplore.exe

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

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
4740	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
4740	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3616	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSecurityPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeTakeOwnershipPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeLoadDriverPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemProfilePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemtimePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeProfSingleProcessPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeIncBasePriorityPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeCreatePagefilePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeBackupPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeRestorePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeShutdownPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeDebugPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemEnvironmentPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeChangeNotifyPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeRemoteShutdownPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeUndockPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeManageVolumePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeImpersonatePrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeCreateGlobalPrivilege	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 33	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 34	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 35	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 36	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeIncreaseQuotaPrivilege	420	msdcsc.exe
Token: SeSecurityPrivilege	420	msdcsc.exe
Token: SeTakeOwnershipPrivilege	420	msdcsc.exe
Token: SeLoadDriverPrivilege	420	msdcsc.exe
Token: SeSystemProfilePrivilege	420	msdcsc.exe
Token: SeSystemtimePrivilege	420	msdcsc.exe
Token: SeProfSingleProcessPrivilege	420	msdcsc.exe
Token: SeIncBasePriorityPrivilege	420	msdcsc.exe
Token: SeCreatePagefilePrivilege	420	msdcsc.exe
Token: SeBackupPrivilege	420	msdcsc.exe
Token: SeRestorePrivilege	420	msdcsc.exe
Token: SeShutdownPrivilege	420	msdcsc.exe
Token: SeDebugPrivilege	420	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	420	msdcsc.exe
Token: SeChangeNotifyPrivilege	420	msdcsc.exe
Token: SeRemoteShutdownPrivilege	420	msdcsc.exe
Token: SeUndockPrivilege	420	msdcsc.exe
Token: SeManageVolumePrivilege	420	msdcsc.exe
Token: SeImpersonatePrivilege	420	msdcsc.exe
Token: SeCreateGlobalPrivilege	420	msdcsc.exe
Token: 33	420	msdcsc.exe
Token: 34	420	msdcsc.exe
Token: 35	420	msdcsc.exe
Token: 36	420	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3616	iexplore.exe
Token: SeSecurityPrivilege	3616	iexplore.exe
Token: SeTakeOwnershipPrivilege	3616	iexplore.exe
Token: SeLoadDriverPrivilege	3616	iexplore.exe
Token: SeSystemProfilePrivilege	3616	iexplore.exe
Token: SeSystemtimePrivilege	3616	iexplore.exe
Token: SeProfSingleProcessPrivilege	3616	iexplore.exe
Token: SeIncBasePriorityPrivilege	3616	iexplore.exe
Token: SeCreatePagefilePrivilege	3616	iexplore.exe
Token: SeBackupPrivilege	3616	iexplore.exe
Token: SeRestorePrivilege	3616	iexplore.exe
Token: SeShutdownPrivilege	3616	iexplore.exe
Token: SeDebugPrivilege	3616	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3616	iexplore.exe
Token: SeChangeNotifyPrivilege	3616	iexplore.exe
Token: SeRemoteShutdownPrivilege	3616	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3616	iexplore.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 3304	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	83
PID 2716 wrote to memory of 3304	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	83
PID 2716 wrote to memory of 3304	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	83
PID 2716 wrote to memory of 420	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	85
PID 2716 wrote to memory of 420	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	85
PID 2716 wrote to memory of 420	2716	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	85
PID 3304 wrote to memory of 4740	3304	cmd.exe	86
PID 3304 wrote to memory of 4740	3304	cmd.exe	86
PID 3304 wrote to memory of 4740	3304	cmd.exe	86
PID 420 wrote to memory of 3616	420	msdcsc.exe	87
PID 420 wrote to memory of 3616	420	msdcsc.exe	87
PID 420 wrote to memory of 3616	420	msdcsc.exe	87
PID 420 wrote to memory of 3616	420	msdcsc.exe	87
PID 420 wrote to memory of 3616	420	msdcsc.exe	87

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2716
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3304
- - 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:4740
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Windows security bypass
  - Executes dropped EXE
  - Windows security modification
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:420
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Windows security bypass
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3616

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

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

Filesize
113B

MD5
e354513348bf27e4e15dacd843019a91

SHA1
0fd9c42bdf1f2dbe249491b61e6b88f6746b7829

SHA256
b4c76e4d5197c62e9a43c9d4ec71162d94c95f442245268351d7b92800346cfc

SHA512
b73a4bc76ad63980c76ffa19fe303bfb7d8fef336489fb98b597d478eed2843c18381e712abc857d585881e68ca0da2d3292eddadcba76b9cdec8fd512abc858

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
742KB

MD5
643aeee51a1f63290748a405d15a37d0

SHA1
f585d6199e88ca686bd52d922eb939d74ba83611

SHA256
b4a2d5dc782af456e9d2c3703cdabb4e3fe501c0eae77361af57d97285042782

SHA512
cfac2c01b577be39ce578d32e4b1360ea84e2498d132dca02126add2c655ec8e0cca4650206d954eb57e615d78b28974a8b66ba2cd2f0dbfc3c6820761fe086f

Download Submit
memory/420-18-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/420-20-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2716-0-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/2716-16-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/3616-19-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads