darkcomet | ba4d4ecfa44a0a6714c66343f3bc91bddbdcb092a6c9b6dfd92e6e08b1a633b8

Analysis

max time kernel
149s
max time network
129s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
20-02-2025 08:35

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General

Target

JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Size

756KB
MD5

0aca758a485838013aca215d7392c5f0
SHA1

1bc185c26c75235442230e8b6d2dd9ad091cb51a
SHA256

ba4d4ecfa44a0a6714c66343f3bc91bddbdcb092a6c9b6dfd92e6e08b1a633b8
SHA512

293e26155107057f363fa87549b3b4b224ac794c0a4c38e27d07fb7cc0cf978633981a3613a450e151fd2df000724edcc88ee6cda92e5b3323ebc3c20f14aeaf
SSDEEP

12288:u9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h+qMd0QZht:6Z1xuVVjfFoynPaVBUR8f+kN10EBcD0u

Score

10^/10

darkcomet guest16 defense_evasion discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

10.1.1.103:1604

Mutex

DC_MUTEX-J67DSUM

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
x4WFiNFxDswT
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

rc4.plain

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:\\Windows\\MSDCSC\\msdcsc.exe"	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe

Windows security bypass 2 TTPs 2 IoCs

defense_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"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

defense_evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Sets file to hidden 1 TTPs 1 IoCs

Modifies file attributes to stop it showing in Explorer etc.

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1688	attrib.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-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe

Deletes itself 1 IoCs

pid	Process
1356	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
2592	msdcsc.exe

Windows security modification 2 TTPs 2 IoCs

defense_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"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\MSDCSC\\msdcsc.exe"	msdcsc.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	C:\Windows\MSDCSC\msdcsc.exe	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
File opened for modification	C:\Windows\MSDCSC\msdcsc.exe	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
File opened for modification	C:\Windows\MSDCSC\	JaffaCakes118_0aca758a485838013aca215d7392c5f0.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 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	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2592	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeSecurityPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeTakeOwnershipPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeLoadDriverPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeSystemProfilePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeSystemtimePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeProfSingleProcessPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeIncBasePriorityPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeCreatePagefilePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeBackupPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeRestorePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeShutdownPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeDebugPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeSystemEnvironmentPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeChangeNotifyPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeRemoteShutdownPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeUndockPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeManageVolumePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeImpersonatePrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeCreateGlobalPrivilege	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: 33	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: 34	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: 35	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: 36	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
Token: SeIncreaseQuotaPrivilege	2592	msdcsc.exe
Token: SeSecurityPrivilege	2592	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2592	msdcsc.exe
Token: SeLoadDriverPrivilege	2592	msdcsc.exe
Token: SeSystemProfilePrivilege	2592	msdcsc.exe
Token: SeSystemtimePrivilege	2592	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2592	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2592	msdcsc.exe
Token: SeCreatePagefilePrivilege	2592	msdcsc.exe
Token: SeBackupPrivilege	2592	msdcsc.exe
Token: SeRestorePrivilege	2592	msdcsc.exe
Token: SeShutdownPrivilege	2592	msdcsc.exe
Token: SeDebugPrivilege	2592	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2592	msdcsc.exe
Token: SeChangeNotifyPrivilege	2592	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2592	msdcsc.exe
Token: SeUndockPrivilege	2592	msdcsc.exe
Token: SeManageVolumePrivilege	2592	msdcsc.exe
Token: SeImpersonatePrivilege	2592	msdcsc.exe
Token: SeCreateGlobalPrivilege	2592	msdcsc.exe
Token: 33	2592	msdcsc.exe
Token: 34	2592	msdcsc.exe
Token: 35	2592	msdcsc.exe
Token: 36	2592	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2592	msdcsc.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 1540 wrote to memory of 2864	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	85
PID 1540 wrote to memory of 2864	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	85
PID 1540 wrote to memory of 2864	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	85
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 1540 wrote to memory of 1356	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	86
PID 2864 wrote to memory of 1688	2864	cmd.exe	88
PID 2864 wrote to memory of 1688	2864	cmd.exe	88
PID 2864 wrote to memory of 1688	2864	cmd.exe	88
PID 1540 wrote to memory of 2592	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	90
PID 1540 wrote to memory of 2592	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	90
PID 1540 wrote to memory of 2592	1540	JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe	90
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93
PID 2592 wrote to memory of 3096	2592	msdcsc.exe	93

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
1688	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_0aca758a485838013aca215d7392c5f0.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1688
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1356
- C:\Windows\MSDCSC\msdcsc.exe
  "C:\Windows\MSDCSC\msdcsc.exe"
  2⤵
  - Windows security bypass
  - Disables RegEdit via registry modification
  - 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
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3096

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\MSDCSC\msdcsc.exe

Filesize
756KB

MD5
0aca758a485838013aca215d7392c5f0

SHA1
1bc185c26c75235442230e8b6d2dd9ad091cb51a

SHA256
ba4d4ecfa44a0a6714c66343f3bc91bddbdcb092a6c9b6dfd92e6e08b1a633b8

SHA512
293e26155107057f363fa87549b3b4b224ac794c0a4c38e27d07fb7cc0cf978633981a3613a450e151fd2df000724edcc88ee6cda92e5b3323ebc3c20f14aeaf

Download Submit
memory/1356-3-0x00000000007A0000-0x00000000007A1000-memory.dmp

Filesize
4KB

Download
memory/1540-0-0x0000000002130000-0x0000000002131000-memory.dmp

Filesize
4KB

Download
memory/1540-63-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2592-65-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/2592-67-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/3096-62-0x0000000000F40000-0x0000000000F41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads