darkcomet | b2bf2e2342c30fa96bf81879c95051176487b952795c2518a43af4985cb4c7cf

Analysis

max time kernel
22s
max time network
24s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 16:06

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General

Target

bootrapper.exe
Size

659KB
MD5

47d6f4568c595516da96c145041a3cb5
SHA1

c154426bdaaf8c990a7b74e66704b5bb1d211e9b
SHA256

b2bf2e2342c30fa96bf81879c95051176487b952795c2518a43af4985cb4c7cf
SHA512

6560d49aa1e2f179b9207cfd424e69a4805a696fd6ac5c7d2227fbfa8fe02bb52e9798ce7db91e666475b841dd0e118514f2e8f512c5e7cfc4c5b9d8a5c3f6c2
SSDEEP

12288:C9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hQ:uZ1xuVVjfFoynPaVBUR8f+kN10EBa

Score

10^/10

darkcomet guest165 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest165

rose324-33082.portmap.host:33082

Mutex

DC_MUTEX-VFEJX89

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
pmatwZA6QE8v
install
true
offline_keylogger
true
persistence
true
reg_key
realtekaudio

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	bootrapper.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"	msdcsc.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\AntiVirusDisableNotify = "1"	msdcsc.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
1020	attrib.exe
1516	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	bootrapper.exe

Deletes itself 1 IoCs

pid	Process
1940	notepad.exe

Executes dropped EXE 1 IoCs

pid	Process
3160	msdcsc.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"	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\realtekaudio = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	bootrapper.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\realtekaudio = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\MSDCSC\\msdcsc.exe"	msdcsc.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 8 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	attrib.exe
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	bootrapper.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies registry class 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4540	bootrapper.exe
Token: SeSecurityPrivilege	4540	bootrapper.exe
Token: SeTakeOwnershipPrivilege	4540	bootrapper.exe
Token: SeLoadDriverPrivilege	4540	bootrapper.exe
Token: SeSystemProfilePrivilege	4540	bootrapper.exe
Token: SeSystemtimePrivilege	4540	bootrapper.exe
Token: SeProfSingleProcessPrivilege	4540	bootrapper.exe
Token: SeIncBasePriorityPrivilege	4540	bootrapper.exe
Token: SeCreatePagefilePrivilege	4540	bootrapper.exe
Token: SeBackupPrivilege	4540	bootrapper.exe
Token: SeRestorePrivilege	4540	bootrapper.exe
Token: SeShutdownPrivilege	4540	bootrapper.exe
Token: SeDebugPrivilege	4540	bootrapper.exe
Token: SeSystemEnvironmentPrivilege	4540	bootrapper.exe
Token: SeChangeNotifyPrivilege	4540	bootrapper.exe
Token: SeRemoteShutdownPrivilege	4540	bootrapper.exe
Token: SeUndockPrivilege	4540	bootrapper.exe
Token: SeManageVolumePrivilege	4540	bootrapper.exe
Token: SeImpersonatePrivilege	4540	bootrapper.exe
Token: SeCreateGlobalPrivilege	4540	bootrapper.exe
Token: 33	4540	bootrapper.exe
Token: 34	4540	bootrapper.exe
Token: 35	4540	bootrapper.exe
Token: 36	4540	bootrapper.exe
Token: SeIncreaseQuotaPrivilege	3160	msdcsc.exe
Token: SeSecurityPrivilege	3160	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3160	msdcsc.exe
Token: SeLoadDriverPrivilege	3160	msdcsc.exe
Token: SeSystemProfilePrivilege	3160	msdcsc.exe
Token: SeSystemtimePrivilege	3160	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3160	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3160	msdcsc.exe
Token: SeCreatePagefilePrivilege	3160	msdcsc.exe
Token: SeBackupPrivilege	3160	msdcsc.exe
Token: SeRestorePrivilege	3160	msdcsc.exe
Token: SeShutdownPrivilege	3160	msdcsc.exe
Token: SeDebugPrivilege	3160	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3160	msdcsc.exe
Token: SeChangeNotifyPrivilege	3160	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3160	msdcsc.exe
Token: SeUndockPrivilege	3160	msdcsc.exe
Token: SeManageVolumePrivilege	3160	msdcsc.exe
Token: SeImpersonatePrivilege	3160	msdcsc.exe
Token: SeCreateGlobalPrivilege	3160	msdcsc.exe
Token: 33	3160	msdcsc.exe
Token: 34	3160	msdcsc.exe
Token: 35	3160	msdcsc.exe
Token: 36	3160	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3160	msdcsc.exe

Suspicious use of WriteProcessMemory 59 IoCs

description	pid	Process	procid_target
PID 4540 wrote to memory of 2004	4540	bootrapper.exe	86
PID 4540 wrote to memory of 2004	4540	bootrapper.exe	86
PID 4540 wrote to memory of 2004	4540	bootrapper.exe	86
PID 4540 wrote to memory of 1760	4540	bootrapper.exe	88
PID 4540 wrote to memory of 1760	4540	bootrapper.exe	88
PID 4540 wrote to memory of 1760	4540	bootrapper.exe	88
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 4540 wrote to memory of 1940	4540	bootrapper.exe	89
PID 2004 wrote to memory of 1020	2004	cmd.exe	91
PID 2004 wrote to memory of 1020	2004	cmd.exe	91
PID 2004 wrote to memory of 1020	2004	cmd.exe	91
PID 1760 wrote to memory of 1516	1760	cmd.exe	92
PID 1760 wrote to memory of 1516	1760	cmd.exe	92
PID 1760 wrote to memory of 1516	1760	cmd.exe	92
PID 4540 wrote to memory of 3160	4540	bootrapper.exe	93
PID 4540 wrote to memory of 3160	4540	bootrapper.exe	93
PID 4540 wrote to memory of 3160	4540	bootrapper.exe	93
PID 3160 wrote to memory of 3492	3160	msdcsc.exe	94
PID 3160 wrote to memory of 3492	3160	msdcsc.exe	94
PID 3160 wrote to memory of 3492	3160	msdcsc.exe	94
PID 3160 wrote to memory of 4312	3160	msdcsc.exe	95
PID 3160 wrote to memory of 4312	3160	msdcsc.exe	95
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96
PID 3160 wrote to memory of 4948	3160	msdcsc.exe	96

System policy modification 1 TTPs 3 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion	msdcsc.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\CurrentVersion\Explorern\NoControlPanel = "1"	msdcsc.exe

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1020	attrib.exe
1516	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bootrapper.exe
"C:\Users\Admin\AppData\Local\Temp\bootrapper.exe"
1⤵
- 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:4540
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\bootrapper.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2004
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\bootrapper.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1516
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1940
- C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe
  "C:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.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 use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - System policy modification
  PID:3160
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    PID:3492
- - C:\Windows\explorer.exe
    "C:\Windows\explorer.exe"
    3⤵
    PID:4312
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4948

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

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:\ProgramData\Microsoft\Windows\Start Menu\Programs\MSDCSC\msdcsc.exe

Filesize
659KB

MD5
47d6f4568c595516da96c145041a3cb5

SHA1
c154426bdaaf8c990a7b74e66704b5bb1d211e9b

SHA256
b2bf2e2342c30fa96bf81879c95051176487b952795c2518a43af4985cb4c7cf

SHA512
6560d49aa1e2f179b9207cfd424e69a4805a696fd6ac5c7d2227fbfa8fe02bb52e9798ce7db91e666475b841dd0e118514f2e8f512c5e7cfc4c5b9d8a5c3f6c2

Download Submit
memory/1940-4-0x00000000008E0000-0x00000000008E1000-memory.dmp

Filesize
4KB

Download
memory/3160-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4540-0-0x0000000002140000-0x0000000002141000-memory.dmp

Filesize
4KB

Download
memory/4540-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/4948-63-0x0000000000C60000-0x0000000000C61000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads