darkcomet | 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23/12/2024, 10:22

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General

Target
6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Size 658KB
Sample241223-medvgsymfp
SHA256 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
MD5 f6351da84168d40fae8da0c156fbab0f
SHA1 1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
SHA512 9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
SSDEEP 12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hn:qZ1xuVVjfFoynPaVBUR8f+kN10EBV
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

test213.no-ip.info:1604

Mutex

DC_MUTEX-KHNEW06

Attributes

InstallPath
MSDCSC\runddl32.exe
gencode
F6FE8i2BxCpu
install
true
offline_keylogger
true
persistence
true
reg_key
MicroUpdate

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\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.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
3556	attrib.exe
1060	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe

Executes dropped EXE 1 IoCs

pid	Process
2672	runddl32.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	runddl32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MSDCSC\\runddl32.exe"	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.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 7 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	runddl32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	attrib.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2672	runddl32.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSecurityPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeTakeOwnershipPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeLoadDriverPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemProfilePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemtimePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeProfSingleProcessPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeIncBasePriorityPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeCreatePagefilePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeBackupPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeRestorePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeShutdownPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeDebugPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeSystemEnvironmentPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeChangeNotifyPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeRemoteShutdownPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeUndockPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeManageVolumePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeImpersonatePrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeCreateGlobalPrivilege	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 33	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 34	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 35	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: 36	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
Token: SeIncreaseQuotaPrivilege	2672	runddl32.exe
Token: SeSecurityPrivilege	2672	runddl32.exe
Token: SeTakeOwnershipPrivilege	2672	runddl32.exe
Token: SeLoadDriverPrivilege	2672	runddl32.exe
Token: SeSystemProfilePrivilege	2672	runddl32.exe
Token: SeSystemtimePrivilege	2672	runddl32.exe
Token: SeProfSingleProcessPrivilege	2672	runddl32.exe
Token: SeIncBasePriorityPrivilege	2672	runddl32.exe
Token: SeCreatePagefilePrivilege	2672	runddl32.exe
Token: SeBackupPrivilege	2672	runddl32.exe
Token: SeRestorePrivilege	2672	runddl32.exe
Token: SeShutdownPrivilege	2672	runddl32.exe
Token: SeDebugPrivilege	2672	runddl32.exe
Token: SeSystemEnvironmentPrivilege	2672	runddl32.exe
Token: SeChangeNotifyPrivilege	2672	runddl32.exe
Token: SeRemoteShutdownPrivilege	2672	runddl32.exe
Token: SeUndockPrivilege	2672	runddl32.exe
Token: SeManageVolumePrivilege	2672	runddl32.exe
Token: SeImpersonatePrivilege	2672	runddl32.exe
Token: SeCreateGlobalPrivilege	2672	runddl32.exe
Token: 33	2672	runddl32.exe
Token: 34	2672	runddl32.exe
Token: 35	2672	runddl32.exe
Token: 36	2672	runddl32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2672	runddl32.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 448 wrote to memory of 2472	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	83
PID 448 wrote to memory of 2472	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	83
PID 448 wrote to memory of 2472	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	83
PID 448 wrote to memory of 832	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	85
PID 448 wrote to memory of 832	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	85
PID 448 wrote to memory of 832	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	85
PID 832 wrote to memory of 3556	832	cmd.exe	87
PID 832 wrote to memory of 3556	832	cmd.exe	87
PID 832 wrote to memory of 3556	832	cmd.exe	87
PID 2472 wrote to memory of 1060	2472	cmd.exe	88
PID 2472 wrote to memory of 1060	2472	cmd.exe	88
PID 2472 wrote to memory of 1060	2472	cmd.exe	88
PID 448 wrote to memory of 2672	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	89
PID 448 wrote to memory of 2672	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	89
PID 448 wrote to memory of 2672	448	6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe	89
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90
PID 2672 wrote to memory of 2156	2672	runddl32.exe	90

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3556	attrib.exe
1060	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe
"C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.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:448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2472
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:1060
- 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:832
- - 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:3556
- C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe
  "C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe"
  2⤵
  - Executes dropped EXE
  - 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:2672
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2156

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

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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runddl32.exe

Path C:\Users\Admin\AppData\Local\Temp\MSDCSC\runddl32.exe
Size 658KB
SHA256 6d34ded00c0da9887ba752872093f59c649de72a1f629a32014f5ed8be509363
MD5 f6351da84168d40fae8da0c156fbab0f
SHA1 1a2283c85bc5c655f5f2f77f27ec3a9412e8db7e
SHA512 9948e83f004bb6d0edf14626660365e469dec444128e820f82066e73177f5de109d048fe226a9cbe95cfc6a99a9d4c501ab3f3900aa2e3677434f03d52694607
SSDEEP 12288:e9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hn:qZ1xuVVjfFoynPaVBUR8f+kN10EBV
MD5 SHA1 SHA512 SSDEEP

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memory/448-64-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/448-0-0x00000000022C0000-0x00000000022C1000-memory.dmp

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memory/2156-63-0x0000000000640000-0x0000000000641000-memory.dmp

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memory/2672-70-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-71-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-66-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-67-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-68-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-69-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-62-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/2672-65-0x0000000002180000-0x0000000002181000-memory.dmp

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memory/2672-72-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-73-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-74-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-75-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-76-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-77-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-78-0x0000000000400000-0x00000000004B2000-memory.dmp

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memory/2672-79-0x0000000000400000-0x00000000004B2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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