darkcomet | 3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

General

Target

AntiVM.exe
Size

837KB
MD5

003b08b0ce8bb863e5a9bcfa7a20a2a3
SHA1

df93956e25c6f799f5976d9e633c5646a2a20638
SHA256

3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3
SHA512

1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

Score

10^/10

darkcomet persistence rat trojan

Malware Config

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

T1004

Modify Registry

T1112

Processes:

AntiVM.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"	AntiVM.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

2832 msdcsc.exe

pid	process
2832	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ANTIVM.EXEmsdcsc.exeAntiVM.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	ANTIVM.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	AntiVM.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

AntiVM.exeANTIVM.EXEmsdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	656	AntiVM.exe
Token: SeSecurityPrivilege	656	AntiVM.exe
Token: SeTakeOwnershipPrivilege	656	AntiVM.exe
Token: SeLoadDriverPrivilege	656	AntiVM.exe
Token: SeSystemProfilePrivilege	656	AntiVM.exe
Token: SeSystemtimePrivilege	656	AntiVM.exe
Token: SeProfSingleProcessPrivilege	656	AntiVM.exe
Token: SeIncBasePriorityPrivilege	656	AntiVM.exe
Token: SeCreatePagefilePrivilege	656	AntiVM.exe
Token: SeBackupPrivilege	656	AntiVM.exe
Token: SeRestorePrivilege	656	AntiVM.exe
Token: SeShutdownPrivilege	656	AntiVM.exe
Token: SeDebugPrivilege	656	AntiVM.exe
Token: SeSystemEnvironmentPrivilege	656	AntiVM.exe
Token: SeChangeNotifyPrivilege	656	AntiVM.exe
Token: SeRemoteShutdownPrivilege	656	AntiVM.exe
Token: SeUndockPrivilege	656	AntiVM.exe
Token: SeManageVolumePrivilege	656	AntiVM.exe
Token: SeImpersonatePrivilege	656	AntiVM.exe
Token: SeCreateGlobalPrivilege	656	AntiVM.exe
Token: 33	656	AntiVM.exe
Token: 34	656	AntiVM.exe
Token: 35	656	AntiVM.exe
Token: 36	656	AntiVM.exe
Token: SeIncreaseQuotaPrivilege	3132	ANTIVM.EXE
Token: SeSecurityPrivilege	3132	ANTIVM.EXE
Token: SeTakeOwnershipPrivilege	3132	ANTIVM.EXE
Token: SeLoadDriverPrivilege	3132	ANTIVM.EXE
Token: SeSystemProfilePrivilege	3132	ANTIVM.EXE
Token: SeSystemtimePrivilege	3132	ANTIVM.EXE
Token: SeProfSingleProcessPrivilege	3132	ANTIVM.EXE
Token: SeIncBasePriorityPrivilege	3132	ANTIVM.EXE
Token: SeCreatePagefilePrivilege	3132	ANTIVM.EXE
Token: SeBackupPrivilege	3132	ANTIVM.EXE
Token: SeRestorePrivilege	3132	ANTIVM.EXE
Token: SeShutdownPrivilege	3132	ANTIVM.EXE
Token: SeDebugPrivilege	3132	ANTIVM.EXE
Token: SeSystemEnvironmentPrivilege	3132	ANTIVM.EXE
Token: SeChangeNotifyPrivilege	3132	ANTIVM.EXE
Token: SeRemoteShutdownPrivilege	3132	ANTIVM.EXE
Token: SeUndockPrivilege	3132	ANTIVM.EXE
Token: SeManageVolumePrivilege	3132	ANTIVM.EXE
Token: SeImpersonatePrivilege	3132	ANTIVM.EXE
Token: SeCreateGlobalPrivilege	3132	ANTIVM.EXE
Token: 33	3132	ANTIVM.EXE
Token: 34	3132	ANTIVM.EXE
Token: 35	3132	ANTIVM.EXE
Token: 36	3132	ANTIVM.EXE
Token: SeIncreaseQuotaPrivilege	2832	msdcsc.exe
Token: SeSecurityPrivilege	2832	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2832	msdcsc.exe
Token: SeLoadDriverPrivilege	2832	msdcsc.exe
Token: SeSystemProfilePrivilege	2832	msdcsc.exe
Token: SeSystemtimePrivilege	2832	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2832	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2832	msdcsc.exe
Token: SeCreatePagefilePrivilege	2832	msdcsc.exe
Token: SeBackupPrivilege	2832	msdcsc.exe
Token: SeRestorePrivilege	2832	msdcsc.exe
Token: SeShutdownPrivilege	2832	msdcsc.exe
Token: SeDebugPrivilege	2832	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2832	msdcsc.exe
Token: SeChangeNotifyPrivilege	2832	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2832	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ANTIVM.EXE

pid process

3132 ANTIVM.EXE

pid	process
3132	ANTIVM.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

AntiVM.exe

description	pid	process	target process
PID 656 wrote to memory of 3132	656	AntiVM.exe	ANTIVM.EXE
PID 656 wrote to memory of 3132	656	AntiVM.exe	ANTIVM.EXE
PID 656 wrote to memory of 3132	656	AntiVM.exe	ANTIVM.EXE
PID 656 wrote to memory of 2832	656	AntiVM.exe	msdcsc.exe
PID 656 wrote to memory of 2832	656	AntiVM.exe	msdcsc.exe
PID 656 wrote to memory of 2832	656	AntiVM.exe	msdcsc.exe

C:\Users\Admin\AppData\Local\Temp\AntiVM.exe
"C:\Users\Admin\AppData\Local\Temp\AntiVM.exe"
1⤵
- Modifies WinLogon for persistence
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:656

C:\Users\Admin\AppData\Local\Temp\ANTIVM.EXE
"C:\Users\Admin\AppData\Local\Temp\ANTIVM.EXE"
2⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:3132

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2832

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

MD5
003b08b0ce8bb863e5a9bcfa7a20a2a3

SHA1
df93956e25c6f799f5976d9e633c5646a2a20638

SHA256
3249eefcf27f03ae89ef3c85074bf00be3e5dd251ec8d52200a731912487bbe3

SHA512
1859bebcbc7f0fa212e36acc7326c5a24d8d2c625a35a9b9c3e6b6f72a2132fc62d7403fa90e8f4e48baf8fc96e32697f37c83fd6fb3fd90dc60541e5bb4fc5f

Download Submit
memory/656-114-0x00000000009A0000-0x00000000009A1000-memory.dmp

Filesize
4KB

Download
memory/2832-117-0x0000000000000000-mapping.dmp

Download
memory/2832-120-0x0000000000990000-0x0000000000991000-memory.dmp

Filesize
4KB

Download
memory/3132-115-0x0000000000000000-mapping.dmp

Download
memory/3132-119-0x00000000022F0000-0x00000000022F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads