darkcomet | b4a2d5dc782af456e9d2c3703cdabb4e3fe501c0eae77361af57d97285042782

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02/01/2025, 09:50

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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

Deletes itself 1 IoCs

pid	Process
2120	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1740	msdcsc.exe

Loads dropped DLL 2 IoCs

pid	Process
2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.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-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\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 1740 set thread context of 892	1740	msdcsc.exe	34

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
2712	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2712	PING.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
892	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSecurityPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeTakeOwnershipPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeLoadDriverPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemProfilePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemtimePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeProfSingleProcessPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeIncBasePriorityPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeCreatePagefilePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeBackupPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeRestorePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeShutdownPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeDebugPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeSystemEnvironmentPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeChangeNotifyPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeRemoteShutdownPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeUndockPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeManageVolumePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeImpersonatePrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeCreateGlobalPrivilege	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 33	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 34	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: 35	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
Token: SeIncreaseQuotaPrivilege	1740	msdcsc.exe
Token: SeSecurityPrivilege	1740	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1740	msdcsc.exe
Token: SeLoadDriverPrivilege	1740	msdcsc.exe
Token: SeSystemProfilePrivilege	1740	msdcsc.exe
Token: SeSystemtimePrivilege	1740	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1740	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1740	msdcsc.exe
Token: SeCreatePagefilePrivilege	1740	msdcsc.exe
Token: SeBackupPrivilege	1740	msdcsc.exe
Token: SeRestorePrivilege	1740	msdcsc.exe
Token: SeShutdownPrivilege	1740	msdcsc.exe
Token: SeDebugPrivilege	1740	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1740	msdcsc.exe
Token: SeChangeNotifyPrivilege	1740	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1740	msdcsc.exe
Token: SeUndockPrivilege	1740	msdcsc.exe
Token: SeManageVolumePrivilege	1740	msdcsc.exe
Token: SeImpersonatePrivilege	1740	msdcsc.exe
Token: SeCreateGlobalPrivilege	1740	msdcsc.exe
Token: 33	1740	msdcsc.exe
Token: 34	1740	msdcsc.exe
Token: 35	1740	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	892	iexplore.exe
Token: SeSecurityPrivilege	892	iexplore.exe
Token: SeTakeOwnershipPrivilege	892	iexplore.exe
Token: SeLoadDriverPrivilege	892	iexplore.exe
Token: SeSystemProfilePrivilege	892	iexplore.exe
Token: SeSystemtimePrivilege	892	iexplore.exe
Token: SeProfSingleProcessPrivilege	892	iexplore.exe
Token: SeIncBasePriorityPrivilege	892	iexplore.exe
Token: SeCreatePagefilePrivilege	892	iexplore.exe
Token: SeBackupPrivilege	892	iexplore.exe
Token: SeRestorePrivilege	892	iexplore.exe
Token: SeShutdownPrivilege	892	iexplore.exe
Token: SeDebugPrivilege	892	iexplore.exe
Token: SeSystemEnvironmentPrivilege	892	iexplore.exe
Token: SeChangeNotifyPrivilege	892	iexplore.exe
Token: SeRemoteShutdownPrivilege	892	iexplore.exe
Token: SeUndockPrivilege	892	iexplore.exe
Token: SeManageVolumePrivilege	892	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
892	iexplore.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2120	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	30
PID 2196 wrote to memory of 2120	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	30
PID 2196 wrote to memory of 2120	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	30
PID 2196 wrote to memory of 2120	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	30
PID 2196 wrote to memory of 1740	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	32
PID 2196 wrote to memory of 1740	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	32
PID 2196 wrote to memory of 1740	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	32
PID 2196 wrote to memory of 1740	2196	JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe	32
PID 2120 wrote to memory of 2712	2120	cmd.exe	33
PID 2120 wrote to memory of 2712	2120	cmd.exe	33
PID 2120 wrote to memory of 2712	2120	cmd.exe	33
PID 2120 wrote to memory of 2712	2120	cmd.exe	33
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34
PID 1740 wrote to memory of 892	1740	msdcsc.exe	34

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_643aeee51a1f63290748a405d15a37d0.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2120
- - 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:2712
- 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:1740
- - 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:892

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

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\AppData\Local\Temp\tmpcmd.bat

Filesize
113B

MD5
e354513348bf27e4e15dacd843019a91

SHA1
0fd9c42bdf1f2dbe249491b61e6b88f6746b7829

SHA256
b4c76e4d5197c62e9a43c9d4ec71162d94c95f442245268351d7b92800346cfc

SHA512
b73a4bc76ad63980c76ffa19fe303bfb7d8fef336489fb98b597d478eed2843c18381e712abc857d585881e68ca0da2d3292eddadcba76b9cdec8fd512abc858

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

Filesize
742KB

MD5
643aeee51a1f63290748a405d15a37d0

SHA1
f585d6199e88ca686bd52d922eb939d74ba83611

SHA256
b4a2d5dc782af456e9d2c3703cdabb4e3fe501c0eae77361af57d97285042782

SHA512
cfac2c01b577be39ce578d32e4b1360ea84e2498d132dca02126add2c655ec8e0cca4650206d954eb57e615d78b28974a8b66ba2cd2f0dbfc3c6820761fe086f

Download Submit
memory/892-23-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/1740-20-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/1740-24-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download
memory/2196-3-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2196-19-0x0000000000400000-0x00000000004C3000-memory.dmp

Filesize
780KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads