darkcomet | adbc98dac44fb8972064a49ebb3112bd4fd0cdee6717a19bcc18553321a068d6

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-01-2025 06:44

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General

Target

DarkComet - v.5.3.1 FWB.exe
Size

17.4MB
MD5

c024f8b0b4261b9be1b91c6ade2dda7c
SHA1

4906f7060ab6480b74f7595c35d980c6362fc5b2
SHA256

8df919d13e79c80c26053c7aa529fc3a0b49c0db77f957b38c49e80e9ffb53a4
SHA512

0ad21960063804c974f09dc7043e9ed4f0769387bab72e391dc2d51ad0a01e385a5b00c6047ec9c7907023aebeb3d61b7725052c7d980a607e220222eb760d43
SSDEEP

196608:j9MP1MAjVO50UX2gZ71Sh2c8YcGrDUHFy0L+jvKqivOt4AdomZ0p1lm2fB1p4oUg:j9MP1Q6F8RC8tQRiqcU4mzKp1E2fBS

Score

10^/10

darkcomet guest16 discovery persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

dnsali.3utilities.com:1604

Mutex

DC_MUTEX-S3VT824

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
aedfreoKqqaC
install
true
offline_keylogger
true
password
12022005
persistence
false
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:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	DarkComet - v.5.3.1 FWB.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	DarkComet - v.5.3.1 FWB.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	DarkComet - v.5.3.1 FWB.exe

Executes dropped EXE 2 IoCs

pid	Process
2096	DarkComet - v.5.3.1 FWB.exe
3456	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	DarkComet - v.5.3.1 FWB.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	DarkComet - v.5.3.1 FWB.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	DarkComet - v.5.3.1 FWB.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	DarkComet - v.5.3.1 FWB.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3456 set thread context of 3668	3456	msdcsc.exe	84

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 4 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	DarkComet - v.5.3.1 FWB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	DarkComet - v.5.3.1 FWB.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	DarkComet - v.5.3.1 FWB.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeSecurityPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeTakeOwnershipPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeLoadDriverPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemProfilePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemtimePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeProfSingleProcessPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeIncBasePriorityPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeCreatePagefilePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeBackupPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeRestorePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeShutdownPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeDebugPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemEnvironmentPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeChangeNotifyPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeRemoteShutdownPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeUndockPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeManageVolumePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeImpersonatePrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeCreateGlobalPrivilege	2096	DarkComet - v.5.3.1 FWB.exe
Token: 33	2096	DarkComet - v.5.3.1 FWB.exe
Token: 34	2096	DarkComet - v.5.3.1 FWB.exe
Token: 35	2096	DarkComet - v.5.3.1 FWB.exe
Token: 36	2096	DarkComet - v.5.3.1 FWB.exe
Token: SeIncreaseQuotaPrivilege	3456	msdcsc.exe
Token: SeSecurityPrivilege	3456	msdcsc.exe
Token: SeTakeOwnershipPrivilege	3456	msdcsc.exe
Token: SeLoadDriverPrivilege	3456	msdcsc.exe
Token: SeSystemProfilePrivilege	3456	msdcsc.exe
Token: SeSystemtimePrivilege	3456	msdcsc.exe
Token: SeProfSingleProcessPrivilege	3456	msdcsc.exe
Token: SeIncBasePriorityPrivilege	3456	msdcsc.exe
Token: SeCreatePagefilePrivilege	3456	msdcsc.exe
Token: SeBackupPrivilege	3456	msdcsc.exe
Token: SeRestorePrivilege	3456	msdcsc.exe
Token: SeShutdownPrivilege	3456	msdcsc.exe
Token: SeDebugPrivilege	3456	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	3456	msdcsc.exe
Token: SeChangeNotifyPrivilege	3456	msdcsc.exe
Token: SeRemoteShutdownPrivilege	3456	msdcsc.exe
Token: SeUndockPrivilege	3456	msdcsc.exe
Token: SeManageVolumePrivilege	3456	msdcsc.exe
Token: SeImpersonatePrivilege	3456	msdcsc.exe
Token: SeCreateGlobalPrivilege	3456	msdcsc.exe
Token: 33	3456	msdcsc.exe
Token: 34	3456	msdcsc.exe
Token: 35	3456	msdcsc.exe
Token: 36	3456	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	3668	iexplore.exe
Token: SeSecurityPrivilege	3668	iexplore.exe
Token: SeTakeOwnershipPrivilege	3668	iexplore.exe
Token: SeLoadDriverPrivilege	3668	iexplore.exe
Token: SeSystemProfilePrivilege	3668	iexplore.exe
Token: SeSystemtimePrivilege	3668	iexplore.exe
Token: SeProfSingleProcessPrivilege	3668	iexplore.exe
Token: SeIncBasePriorityPrivilege	3668	iexplore.exe
Token: SeCreatePagefilePrivilege	3668	iexplore.exe
Token: SeBackupPrivilege	3668	iexplore.exe
Token: SeRestorePrivilege	3668	iexplore.exe
Token: SeShutdownPrivilege	3668	iexplore.exe
Token: SeDebugPrivilege	3668	iexplore.exe
Token: SeSystemEnvironmentPrivilege	3668	iexplore.exe
Token: SeChangeNotifyPrivilege	3668	iexplore.exe
Token: SeRemoteShutdownPrivilege	3668	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3668	iexplore.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 224 wrote to memory of 2096	224	DarkComet - v.5.3.1 FWB.exe	82
PID 224 wrote to memory of 2096	224	DarkComet - v.5.3.1 FWB.exe	82
PID 224 wrote to memory of 2096	224	DarkComet - v.5.3.1 FWB.exe	82
PID 2096 wrote to memory of 3456	2096	DarkComet - v.5.3.1 FWB.exe	83
PID 2096 wrote to memory of 3456	2096	DarkComet - v.5.3.1 FWB.exe	83
PID 2096 wrote to memory of 3456	2096	DarkComet - v.5.3.1 FWB.exe	83
PID 3456 wrote to memory of 3668	3456	msdcsc.exe	84
PID 3456 wrote to memory of 3668	3456	msdcsc.exe	84
PID 3456 wrote to memory of 3668	3456	msdcsc.exe	84
PID 3456 wrote to memory of 3668	3456	msdcsc.exe	84
PID 3456 wrote to memory of 3668	3456	msdcsc.exe	84

C:\Users\Admin\AppData\Local\Temp\DarkComet - v.5.3.1 FWB.exe
"C:\Users\Admin\AppData\Local\Temp\DarkComet - v.5.3.1 FWB.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:224
- C:\ProgramData\DarkComet - v.5.3.1 FWB.exe
  "C:\ProgramData\DarkComet - v.5.3.1 FWB.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2096
- - C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
    "C:\Windows\system32\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3456
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3668

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

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\DarkComet - v.5.3.1 FWB.exe

Filesize
235KB

MD5
6684aeab05cbe09e54a497147f90eed3

SHA1
60c3908dcadd17aad605d242f0a39d9e75d0422b

SHA256
7fc14072ae6b14bc4c3138d2acec5d7797ffd85724fd1322899d607c9070e72c

SHA512
91bb613493b545a7ffa1947476b4b7547d216b73748f84c4f129663b78597edb4e86620cafe4c50496288932fdb5839cfbac435ced822620cc20b76db7c2fd04

Download Submit
memory/224-0-0x0000000074B3E000-0x0000000074B3F000-memory.dmp

Filesize
4KB

Download
memory/224-1-0x00000000004B0000-0x0000000001612000-memory.dmp

Filesize
17.4MB

Download
memory/224-2-0x0000000005F90000-0x0000000006B1C000-memory.dmp

Filesize
11.5MB

Download
memory/224-3-0x00000000080D0000-0x0000000008674000-memory.dmp

Filesize
5.6MB

Download
memory/2096-63-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2096-66-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/2096-82-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/3456-81-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads