darkcomet | e040de0e7f4d613ed9cab462ec0ffa944b6e5ca125f971c4bef5a71195ede57a

General

Target

cb88956b765445b5b073e6934c7eab08.exe
Size

763KB
MD5

cb88956b765445b5b073e6934c7eab08
SHA1

be988a17dd322418deb21e497c882035654eeb66
SHA256

e040de0e7f4d613ed9cab462ec0ffa944b6e5ca125f971c4bef5a71195ede57a
SHA512

93a8e416018c9e165530b2152a450d7b14c4e79e8dd5c245139c57bae09da09ced4b89b5041ad2c280e309fa15af2f3261a9496bdd31ff61505d527b8c61ec4e
SSDEEP

12288:aGKLKkc69/hWT9lAksP12EgVgcruncSOg2umW1+nib2C08vw/wSaTwIzP+lN0J:adLKkjWvANP1PAJ0Auf+G2l8Owt5zP+e

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

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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	faaiilll.exe

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	faaiilll.exe

Executes dropped EXE 2 IoCs

pid	Process
1708	faaiilll.exe
2652	msdcsc.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-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\af = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	faaiilll.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5068 set thread context of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	faaiilll.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	5068	cb88956b765445b5b073e6934c7eab08.exe
Token: SeIncreaseQuotaPrivilege	1708	faaiilll.exe
Token: SeSecurityPrivilege	1708	faaiilll.exe
Token: SeTakeOwnershipPrivilege	1708	faaiilll.exe
Token: SeLoadDriverPrivilege	1708	faaiilll.exe
Token: SeSystemProfilePrivilege	1708	faaiilll.exe
Token: SeSystemtimePrivilege	1708	faaiilll.exe
Token: SeProfSingleProcessPrivilege	1708	faaiilll.exe
Token: SeIncBasePriorityPrivilege	1708	faaiilll.exe
Token: SeCreatePagefilePrivilege	1708	faaiilll.exe
Token: SeBackupPrivilege	1708	faaiilll.exe
Token: SeRestorePrivilege	1708	faaiilll.exe
Token: SeShutdownPrivilege	1708	faaiilll.exe
Token: SeDebugPrivilege	1708	faaiilll.exe
Token: SeSystemEnvironmentPrivilege	1708	faaiilll.exe
Token: SeChangeNotifyPrivilege	1708	faaiilll.exe
Token: SeRemoteShutdownPrivilege	1708	faaiilll.exe
Token: SeUndockPrivilege	1708	faaiilll.exe
Token: SeManageVolumePrivilege	1708	faaiilll.exe
Token: SeImpersonatePrivilege	1708	faaiilll.exe
Token: SeCreateGlobalPrivilege	1708	faaiilll.exe
Token: 33	1708	faaiilll.exe
Token: 34	1708	faaiilll.exe
Token: 35	1708	faaiilll.exe
Token: 36	1708	faaiilll.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 5068 wrote to memory of 1708	5068	cb88956b765445b5b073e6934c7eab08.exe	89
PID 1708 wrote to memory of 2652	1708	faaiilll.exe	97
PID 1708 wrote to memory of 2652	1708	faaiilll.exe	97
PID 1708 wrote to memory of 2652	1708	faaiilll.exe	97

C:\Users\Admin\AppData\Local\Temp\cb88956b765445b5b073e6934c7eab08.exe
"C:\Users\Admin\AppData\Local\Temp\cb88956b765445b5b073e6934c7eab08.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5068
- C:\Users\Admin\AppData\Local\Temp\faaiilll.exe
  C:\Users\Admin\AppData\Local\Temp\faaiilll.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks computer location settings
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1708
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    PID:2652

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\faaiilll.exe

Filesize
34KB

MD5
e118330b4629b12368d91b9df6488be0

SHA1
ce90218c7e3b90df2a3409ec253048bb6472c2fd

SHA256
3a0f2936b8c45e8ba3458d69d7859a63844469e698652e15fb56639d32f40cc9

SHA512
ac91c04cb20223dbaaf594440cb778dff36e857921be427c8528ba4c6cdb3e8bf8e71e1ae8af7bde9c04ff5b97b379231625bc1a2b66aba2f98cd340cd8a94b0

Download Submit
memory/1708-5-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/1708-8-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/1708-10-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/1708-13-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/1708-14-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/1708-74-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/5068-0-0x00000000746E0000-0x0000000074C91000-memory.dmp

Filesize
5.7MB

Download
memory/5068-1-0x0000000000CB0000-0x0000000000CC0000-memory.dmp

Filesize
64KB

Download
memory/5068-2-0x00000000746E0000-0x0000000074C91000-memory.dmp

Filesize
5.7MB

Download
memory/5068-11-0x00000000746E0000-0x0000000074C91000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads