darkcomet | 745c2ebd15d66fa5f5a900c03d8f0c6d8bbc9f6e2b6d9ccfeed52cc7fd25bc42

General

Target

dark.exe
Size

658KB
MD5

230751a9ef1cdccc11aa40a70a259f22
SHA1

84f530c5b6313e9bad82c7d1d0826a3948658149
SHA256

bc1ad6c5ba21d4007f5b06b13bd9f1647188fc4605dea8e13a039ce5ec5f7eb2
SHA512

31ce9157cdfb89e7f28303c9bcb4c5a10fa1c0a150119d7abfe016858031dc4e9987175139f5768846eeb03cdb93afb8fd46f816f2a286c35eb2d6ac1cba6269
SSDEEP

12288:y9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hU:eZ1xuVVjfFoynPaVBUR8f+kN10EBm

Score

10^/10

darkcomet tek persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

tek

C2

gecce.no-ip.biz:3461

Mutex

DC_MUTEX-M0JG7NY

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
Q7wXAkJLgEkp
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

dark.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	dark.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

3024 notepad.exe
Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2576 msdcsc.exe
Loads dropped DLL 2 IoCs

Processes:

dark.exe

pid process

1548 dark.exe
1548 dark.exe

pid	process
3024	notepad.exe

pid	process
2576	msdcsc.exe

pid	process
1548	dark.exe
1548	dark.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

dark.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	dark.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid process

2576 msdcsc.exe

pid	process
2576	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

dark.exemsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1548	dark.exe
Token: SeSecurityPrivilege	1548	dark.exe
Token: SeTakeOwnershipPrivilege	1548	dark.exe
Token: SeLoadDriverPrivilege	1548	dark.exe
Token: SeSystemProfilePrivilege	1548	dark.exe
Token: SeSystemtimePrivilege	1548	dark.exe
Token: SeProfSingleProcessPrivilege	1548	dark.exe
Token: SeIncBasePriorityPrivilege	1548	dark.exe
Token: SeCreatePagefilePrivilege	1548	dark.exe
Token: SeBackupPrivilege	1548	dark.exe
Token: SeRestorePrivilege	1548	dark.exe
Token: SeShutdownPrivilege	1548	dark.exe
Token: SeDebugPrivilege	1548	dark.exe
Token: SeSystemEnvironmentPrivilege	1548	dark.exe
Token: SeChangeNotifyPrivilege	1548	dark.exe
Token: SeRemoteShutdownPrivilege	1548	dark.exe
Token: SeUndockPrivilege	1548	dark.exe
Token: SeManageVolumePrivilege	1548	dark.exe
Token: SeImpersonatePrivilege	1548	dark.exe
Token: SeCreateGlobalPrivilege	1548	dark.exe
Token: 33	1548	dark.exe
Token: 34	1548	dark.exe
Token: 35	1548	dark.exe
Token: SeIncreaseQuotaPrivilege	2576	msdcsc.exe
Token: SeSecurityPrivilege	2576	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2576	msdcsc.exe
Token: SeLoadDriverPrivilege	2576	msdcsc.exe
Token: SeSystemProfilePrivilege	2576	msdcsc.exe
Token: SeSystemtimePrivilege	2576	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2576	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2576	msdcsc.exe
Token: SeCreatePagefilePrivilege	2576	msdcsc.exe
Token: SeBackupPrivilege	2576	msdcsc.exe
Token: SeRestorePrivilege	2576	msdcsc.exe
Token: SeShutdownPrivilege	2576	msdcsc.exe
Token: SeDebugPrivilege	2576	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2576	msdcsc.exe
Token: SeChangeNotifyPrivilege	2576	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2576	msdcsc.exe
Token: SeUndockPrivilege	2576	msdcsc.exe
Token: SeManageVolumePrivilege	2576	msdcsc.exe
Token: SeImpersonatePrivilege	2576	msdcsc.exe
Token: SeCreateGlobalPrivilege	2576	msdcsc.exe
Token: 33	2576	msdcsc.exe
Token: 34	2576	msdcsc.exe
Token: 35	2576	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid process

2576 msdcsc.exe

pid	process
2576	msdcsc.exe

Suspicious use of WriteProcessMemory 45 IoCs

Processes:

dark.exemsdcsc.exe

description	pid	process	target process
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 3024	1548	dark.exe	notepad.exe
PID 1548 wrote to memory of 2576	1548	dark.exe	msdcsc.exe
PID 1548 wrote to memory of 2576	1548	dark.exe	msdcsc.exe
PID 1548 wrote to memory of 2576	1548	dark.exe	msdcsc.exe
PID 1548 wrote to memory of 2576	1548	dark.exe	msdcsc.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe
PID 2576 wrote to memory of 2720	2576	msdcsc.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\dark.exe
"C:\Users\Admin\AppData\Local\Temp\dark.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1548

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:3024

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2576

C:\Windows\SysWOW64\notepad.exe
notepad
3⤵
PID:2720

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
Filesize
658KB

MD5
230751a9ef1cdccc11aa40a70a259f22

SHA1
84f530c5b6313e9bad82c7d1d0826a3948658149

SHA256
bc1ad6c5ba21d4007f5b06b13bd9f1647188fc4605dea8e13a039ce5ec5f7eb2

SHA512
31ce9157cdfb89e7f28303c9bcb4c5a10fa1c0a150119d7abfe016858031dc4e9987175139f5768846eeb03cdb93afb8fd46f816f2a286c35eb2d6ac1cba6269

Download Submit
memory/1548-0-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/1548-55-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-62-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-28-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2576-57-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-58-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-59-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-69-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-66-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2576-67-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/2720-54-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/3024-19-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/3024-3-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

Loading Replay Monitor...

Downloads