darkcomet | dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1

General

Target

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Size

285KB
MD5

4c4b6cd307cd62ff89d28a5aa750d4c4
SHA1

46d2345b3d46b7561e48bae5fb229681dcff0c59
SHA256

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1
SHA512

f1c66bb92f0bd8891b0fd9f6189673580629316d5a289be93d1ecf4bc7751f9552bb5d7326aa27d75dbe3d38a883be2cbd2e143690611ecbd465f09ee16c7183
SSDEEP

6144:Tlb6SDOiIN4o2cOMayarS0IjX7n6wXmzbBFXPE:T0Siiu2cOMayaZerXXmhFXPE

Score

10^/10

darkcomet persistence rat trojan upx

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:

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.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\\mshhdcsc.exe"	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe

Executes dropped EXE 1 IoCs

Processes:

mshhdcsc.exe

pid process

4928 mshhdcsc.exe

pid	process
4928	mshhdcsc.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/3484-132-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
C:\Users\Admin\Documents\MSDCSC\mshhdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\mshhdcsc.exe	upx
behavioral2/memory/3484-136-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/4928-138-0x0000000000400000-0x00000000004C9000-memory.dmp	upx
behavioral2/memory/4928-139-0x0000000000400000-0x00000000004C9000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdateii = "C:\\Users\\Admin\\Documents\\MSDCSC\\mshhdcsc.exe"	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.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 48 IoCs

Processes:

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exemshhdcsc.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeSecurityPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeTakeOwnershipPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeLoadDriverPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeSystemProfilePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeSystemtimePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeProfSingleProcessPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeIncBasePriorityPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeCreatePagefilePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeBackupPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeRestorePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeShutdownPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeDebugPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeSystemEnvironmentPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeChangeNotifyPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeRemoteShutdownPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeUndockPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeManageVolumePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeImpersonatePrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeCreateGlobalPrivilege	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: 33	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: 34	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: 35	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: 36	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
Token: SeIncreaseQuotaPrivilege	4928	mshhdcsc.exe
Token: SeSecurityPrivilege	4928	mshhdcsc.exe
Token: SeTakeOwnershipPrivilege	4928	mshhdcsc.exe
Token: SeLoadDriverPrivilege	4928	mshhdcsc.exe
Token: SeSystemProfilePrivilege	4928	mshhdcsc.exe
Token: SeSystemtimePrivilege	4928	mshhdcsc.exe
Token: SeProfSingleProcessPrivilege	4928	mshhdcsc.exe
Token: SeIncBasePriorityPrivilege	4928	mshhdcsc.exe
Token: SeCreatePagefilePrivilege	4928	mshhdcsc.exe
Token: SeBackupPrivilege	4928	mshhdcsc.exe
Token: SeRestorePrivilege	4928	mshhdcsc.exe
Token: SeShutdownPrivilege	4928	mshhdcsc.exe
Token: SeDebugPrivilege	4928	mshhdcsc.exe
Token: SeSystemEnvironmentPrivilege	4928	mshhdcsc.exe
Token: SeChangeNotifyPrivilege	4928	mshhdcsc.exe
Token: SeRemoteShutdownPrivilege	4928	mshhdcsc.exe
Token: SeUndockPrivilege	4928	mshhdcsc.exe
Token: SeManageVolumePrivilege	4928	mshhdcsc.exe
Token: SeImpersonatePrivilege	4928	mshhdcsc.exe
Token: SeCreateGlobalPrivilege	4928	mshhdcsc.exe
Token: 33	4928	mshhdcsc.exe
Token: 34	4928	mshhdcsc.exe
Token: 35	4928	mshhdcsc.exe
Token: 36	4928	mshhdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

mshhdcsc.exe

pid process

4928 mshhdcsc.exe

pid	process
4928	mshhdcsc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exemshhdcsc.exe

description	pid	process	target process
PID 3484 wrote to memory of 4928	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe	mshhdcsc.exe
PID 3484 wrote to memory of 4928	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe	mshhdcsc.exe
PID 3484 wrote to memory of 4928	3484	dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe	mshhdcsc.exe
PID 4928 wrote to memory of 4916	4928	mshhdcsc.exe	iexplore.exe
PID 4928 wrote to memory of 4916	4928	mshhdcsc.exe	iexplore.exe
PID 4928 wrote to memory of 4916	4928	mshhdcsc.exe	iexplore.exe
PID 4928 wrote to memory of 4864	4928	mshhdcsc.exe	explorer.exe
PID 4928 wrote to memory of 4864	4928	mshhdcsc.exe	explorer.exe

C:\Users\Admin\AppData\Local\Temp\dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe
"C:\Users\Admin\AppData\Local\Temp\dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3484

C:\Users\Admin\Documents\MSDCSC\mshhdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\mshhdcsc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4928

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
PID:4916

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
3⤵
PID:4864

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
285KB

MD5
4c4b6cd307cd62ff89d28a5aa750d4c4

SHA1
46d2345b3d46b7561e48bae5fb229681dcff0c59

SHA256
dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1

SHA512
f1c66bb92f0bd8891b0fd9f6189673580629316d5a289be93d1ecf4bc7751f9552bb5d7326aa27d75dbe3d38a883be2cbd2e143690611ecbd465f09ee16c7183

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

Filesize
285KB

MD5
4c4b6cd307cd62ff89d28a5aa750d4c4

SHA1
46d2345b3d46b7561e48bae5fb229681dcff0c59

SHA256
dd51300809df5d583b25262f6bd85a490d78375a85bee027270c585da13c09e1

SHA512
f1c66bb92f0bd8891b0fd9f6189673580629316d5a289be93d1ecf4bc7751f9552bb5d7326aa27d75dbe3d38a883be2cbd2e143690611ecbd465f09ee16c7183

Download Submit
memory/3484-132-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/3484-136-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/4864-137-0x0000000000000000-mapping.dmp

Download
memory/4928-133-0x0000000000000000-mapping.dmp

Download
memory/4928-138-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download
memory/4928-139-0x0000000000400000-0x00000000004C9000-memory.dmp

Filesize
804KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads