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

2752 msdcsc.exe

pid	process
2752	msdcsc.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

AntiVM.exeANTIVM.EXEmsdcsc.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"	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

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	620	AntiVM.exe
Token: SeSecurityPrivilege	620	AntiVM.exe
Token: SeTakeOwnershipPrivilege	620	AntiVM.exe
Token: SeLoadDriverPrivilege	620	AntiVM.exe
Token: SeSystemProfilePrivilege	620	AntiVM.exe
Token: SeSystemtimePrivilege	620	AntiVM.exe
Token: SeProfSingleProcessPrivilege	620	AntiVM.exe
Token: SeIncBasePriorityPrivilege	620	AntiVM.exe
Token: SeCreatePagefilePrivilege	620	AntiVM.exe
Token: SeBackupPrivilege	620	AntiVM.exe
Token: SeRestorePrivilege	620	AntiVM.exe
Token: SeShutdownPrivilege	620	AntiVM.exe
Token: SeDebugPrivilege	620	AntiVM.exe
Token: SeSystemEnvironmentPrivilege	620	AntiVM.exe
Token: SeChangeNotifyPrivilege	620	AntiVM.exe
Token: SeRemoteShutdownPrivilege	620	AntiVM.exe
Token: SeUndockPrivilege	620	AntiVM.exe
Token: SeManageVolumePrivilege	620	AntiVM.exe
Token: SeImpersonatePrivilege	620	AntiVM.exe
Token: SeCreateGlobalPrivilege	620	AntiVM.exe
Token: 33	620	AntiVM.exe
Token: 34	620	AntiVM.exe
Token: 35	620	AntiVM.exe
Token: 36	620	AntiVM.exe
Token: SeIncreaseQuotaPrivilege	3500	ANTIVM.EXE
Token: SeSecurityPrivilege	3500	ANTIVM.EXE
Token: SeTakeOwnershipPrivilege	3500	ANTIVM.EXE
Token: SeLoadDriverPrivilege	3500	ANTIVM.EXE
Token: SeSystemProfilePrivilege	3500	ANTIVM.EXE
Token: SeSystemtimePrivilege	3500	ANTIVM.EXE
Token: SeProfSingleProcessPrivilege	3500	ANTIVM.EXE
Token: SeIncBasePriorityPrivilege	3500	ANTIVM.EXE
Token: SeCreatePagefilePrivilege	3500	ANTIVM.EXE
Token: SeBackupPrivilege	3500	ANTIVM.EXE
Token: SeRestorePrivilege	3500	ANTIVM.EXE
Token: SeShutdownPrivilege	3500	ANTIVM.EXE
Token: SeDebugPrivilege	3500	ANTIVM.EXE
Token: SeSystemEnvironmentPrivilege	3500	ANTIVM.EXE
Token: SeChangeNotifyPrivilege	3500	ANTIVM.EXE
Token: SeRemoteShutdownPrivilege	3500	ANTIVM.EXE
Token: SeUndockPrivilege	3500	ANTIVM.EXE
Token: SeManageVolumePrivilege	3500	ANTIVM.EXE
Token: SeImpersonatePrivilege	3500	ANTIVM.EXE
Token: SeCreateGlobalPrivilege	3500	ANTIVM.EXE
Token: 33	3500	ANTIVM.EXE
Token: 34	3500	ANTIVM.EXE
Token: 35	3500	ANTIVM.EXE
Token: 36	3500	ANTIVM.EXE
Token: SeIncreaseQuotaPrivilege	2752	msdcsc.exe
Token: SeSecurityPrivilege	2752	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2752	msdcsc.exe
Token: SeLoadDriverPrivilege	2752	msdcsc.exe
Token: SeSystemProfilePrivilege	2752	msdcsc.exe
Token: SeSystemtimePrivilege	2752	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2752	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2752	msdcsc.exe
Token: SeCreatePagefilePrivilege	2752	msdcsc.exe
Token: SeBackupPrivilege	2752	msdcsc.exe
Token: SeRestorePrivilege	2752	msdcsc.exe
Token: SeShutdownPrivilege	2752	msdcsc.exe
Token: SeDebugPrivilege	2752	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2752	msdcsc.exe
Token: SeChangeNotifyPrivilege	2752	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2752	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ANTIVM.EXE

pid process

3500 ANTIVM.EXE

pid	process
3500	ANTIVM.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

AntiVM.exe

description	pid	process	target process
PID 620 wrote to memory of 3500	620	AntiVM.exe	ANTIVM.EXE
PID 620 wrote to memory of 3500	620	AntiVM.exe	ANTIVM.EXE
PID 620 wrote to memory of 3500	620	AntiVM.exe	ANTIVM.EXE
PID 620 wrote to memory of 2752	620	AntiVM.exe	msdcsc.exe
PID 620 wrote to memory of 2752	620	AntiVM.exe	msdcsc.exe
PID 620 wrote to memory of 2752	620	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:620

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:3500

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:2752

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

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/620-114-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/2752-117-0x0000000000000000-mapping.dmp

Download
memory/2752-120-0x00000000007B0000-0x00000000008FA000-memory.dmp

Filesize
1.3MB

Download
memory/3500-115-0x0000000000000000-mapping.dmp

Download
memory/3500-119-0x00000000023C0000-0x00000000023C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads