darkcomet | adbc98dac44fb8972064a49ebb3112bd4fd0cdee6717a19bcc18553321a068d6

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-01-2025 06:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

Executes dropped EXE 2 IoCs

pid	Process
2704	DarkComet - v.5.3.1 FWB.exe
2620	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
2788	DarkComet - v.5.3.1 FWB.exe
2788	DarkComet - v.5.3.1 FWB.exe
2704	DarkComet - v.5.3.1 FWB.exe
2704	DarkComet - v.5.3.1 FWB.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-1-5-21-312935884-697965778-3955649944-1000\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 2620 set thread context of 1260	2620	msdcsc.exe	33

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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeSecurityPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeTakeOwnershipPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeLoadDriverPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemProfilePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemtimePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeProfSingleProcessPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeIncBasePriorityPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeCreatePagefilePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeBackupPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeRestorePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeShutdownPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeDebugPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeSystemEnvironmentPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeChangeNotifyPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeRemoteShutdownPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeUndockPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeManageVolumePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeImpersonatePrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeCreateGlobalPrivilege	2704	DarkComet - v.5.3.1 FWB.exe
Token: 33	2704	DarkComet - v.5.3.1 FWB.exe
Token: 34	2704	DarkComet - v.5.3.1 FWB.exe
Token: 35	2704	DarkComet - v.5.3.1 FWB.exe
Token: SeIncreaseQuotaPrivilege	2620	msdcsc.exe
Token: SeSecurityPrivilege	2620	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2620	msdcsc.exe
Token: SeLoadDriverPrivilege	2620	msdcsc.exe
Token: SeSystemProfilePrivilege	2620	msdcsc.exe
Token: SeSystemtimePrivilege	2620	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2620	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2620	msdcsc.exe
Token: SeCreatePagefilePrivilege	2620	msdcsc.exe
Token: SeBackupPrivilege	2620	msdcsc.exe
Token: SeRestorePrivilege	2620	msdcsc.exe
Token: SeShutdownPrivilege	2620	msdcsc.exe
Token: SeDebugPrivilege	2620	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2620	msdcsc.exe
Token: SeChangeNotifyPrivilege	2620	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2620	msdcsc.exe
Token: SeUndockPrivilege	2620	msdcsc.exe
Token: SeManageVolumePrivilege	2620	msdcsc.exe
Token: SeImpersonatePrivilege	2620	msdcsc.exe
Token: SeCreateGlobalPrivilege	2620	msdcsc.exe
Token: 33	2620	msdcsc.exe
Token: 34	2620	msdcsc.exe
Token: 35	2620	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1260	iexplore.exe
Token: SeSecurityPrivilege	1260	iexplore.exe
Token: SeTakeOwnershipPrivilege	1260	iexplore.exe
Token: SeLoadDriverPrivilege	1260	iexplore.exe
Token: SeSystemProfilePrivilege	1260	iexplore.exe
Token: SeSystemtimePrivilege	1260	iexplore.exe
Token: SeProfSingleProcessPrivilege	1260	iexplore.exe
Token: SeIncBasePriorityPrivilege	1260	iexplore.exe
Token: SeCreatePagefilePrivilege	1260	iexplore.exe
Token: SeBackupPrivilege	1260	iexplore.exe
Token: SeRestorePrivilege	1260	iexplore.exe
Token: SeShutdownPrivilege	1260	iexplore.exe
Token: SeDebugPrivilege	1260	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1260	iexplore.exe
Token: SeChangeNotifyPrivilege	1260	iexplore.exe
Token: SeRemoteShutdownPrivilege	1260	iexplore.exe
Token: SeUndockPrivilege	1260	iexplore.exe
Token: SeManageVolumePrivilege	1260	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1260	iexplore.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2704	2788	DarkComet - v.5.3.1 FWB.exe	31
PID 2788 wrote to memory of 2704	2788	DarkComet - v.5.3.1 FWB.exe	31
PID 2788 wrote to memory of 2704	2788	DarkComet - v.5.3.1 FWB.exe	31
PID 2788 wrote to memory of 2704	2788	DarkComet - v.5.3.1 FWB.exe	31
PID 2704 wrote to memory of 2620	2704	DarkComet - v.5.3.1 FWB.exe	32
PID 2704 wrote to memory of 2620	2704	DarkComet - v.5.3.1 FWB.exe	32
PID 2704 wrote to memory of 2620	2704	DarkComet - v.5.3.1 FWB.exe	32
PID 2704 wrote to memory of 2620	2704	DarkComet - v.5.3.1 FWB.exe	32
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33
PID 2620 wrote to memory of 1260	2620	msdcsc.exe	33

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⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- C:\ProgramData\DarkComet - v.5.3.1 FWB.exe
  "C:\ProgramData\DarkComet - v.5.3.1 FWB.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - 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:2704
- - 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:2620
  - - 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:1260

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

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

\ProgramData\DarkComet - v.5.3.1 FWB.exe

Filesize
235KB

MD5
6684aeab05cbe09e54a497147f90eed3

SHA1
60c3908dcadd17aad605d242f0a39d9e75d0422b

SHA256
7fc14072ae6b14bc4c3138d2acec5d7797ffd85724fd1322899d607c9070e72c

SHA512
91bb613493b545a7ffa1947476b4b7547d216b73748f84c4f129663b78597edb4e86620cafe4c50496288932fdb5839cfbac435ced822620cc20b76db7c2fd04

Download Submit
memory/2620-32-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2704-14-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2704-26-0x0000000003760000-0x0000000003815000-memory.dmp

Filesize
724KB

Download
memory/2704-27-0x0000000003760000-0x0000000003815000-memory.dmp

Filesize
724KB

Download
memory/2704-33-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2788-0-0x00000000748EE000-0x00000000748EF000-memory.dmp

Filesize
4KB

Download
memory/2788-1-0x0000000000FA0000-0x0000000002102000-memory.dmp

Filesize
17.4MB

Download
memory/2788-2-0x0000000005A80000-0x000000000660C000-memory.dmp

Filesize
11.5MB

Download
memory/2788-15-0x00000000084A0000-0x0000000008555000-memory.dmp

Filesize
724KB

Download
memory/2788-13-0x00000000084A0000-0x0000000008555000-memory.dmp

Filesize
724KB

Download
memory/2788-34-0x00000000084A0000-0x0000000008555000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads