darkcomet | 6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

General

Target

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Size

812KB
MD5

5872996a80069af442c88f5cd6bb9020
SHA1

b49e31d0aefded8fb0bc18045f635c1aa495e037
SHA256

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649
SHA512

bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4
SSDEEP

12288:daAchpWsuVTv7ItY8XljyypHP7cOLBev03hlULsmWZ++09ZcKDVsgd0:4AEENIq8XwyVPQclDq/+WnpsS0

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:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windupdt\\winupdate.exe"	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid process

1196 winupdate.exe

pid	process
1196	winupdate.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	winupdate.exe

Loads dropped DLL 4 IoCs

Processes:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exewinupdate.exe

pid process

2000 6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
1196 winupdate.exe
1196 winupdate.exe
1196 winupdate.exe

pid	process
2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
1196	winupdate.exe
1196	winupdate.exe
1196	winupdate.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winupdate.exe6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run	winupdate.exe
Key created	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 8 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

winupdate.exe6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	winupdate.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	winupdate.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	winupdate.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exewinupdate.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	winupdate.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

winupdate.exe

pid process

1196 winupdate.exe

pid	process
1196	winupdate.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

Processes:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeSecurityPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeTakeOwnershipPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeLoadDriverPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeSystemProfilePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeSystemtimePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeProfSingleProcessPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeIncBasePriorityPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeCreatePagefilePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeBackupPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeRestorePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeShutdownPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeDebugPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeSystemEnvironmentPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeChangeNotifyPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeRemoteShutdownPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeUndockPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeManageVolumePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeImpersonatePrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeCreateGlobalPrivilege	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: 33	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: 34	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: 35	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
Token: SeIncreaseQuotaPrivilege	1196	winupdate.exe
Token: SeSecurityPrivilege	1196	winupdate.exe
Token: SeTakeOwnershipPrivilege	1196	winupdate.exe
Token: SeLoadDriverPrivilege	1196	winupdate.exe
Token: SeSystemProfilePrivilege	1196	winupdate.exe
Token: SeSystemtimePrivilege	1196	winupdate.exe
Token: SeProfSingleProcessPrivilege	1196	winupdate.exe
Token: SeIncBasePriorityPrivilege	1196	winupdate.exe
Token: SeCreatePagefilePrivilege	1196	winupdate.exe
Token: SeBackupPrivilege	1196	winupdate.exe
Token: SeRestorePrivilege	1196	winupdate.exe
Token: SeShutdownPrivilege	1196	winupdate.exe
Token: SeDebugPrivilege	1196	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1196	winupdate.exe
Token: SeChangeNotifyPrivilege	1196	winupdate.exe
Token: SeRemoteShutdownPrivilege	1196	winupdate.exe
Token: SeUndockPrivilege	1196	winupdate.exe
Token: SeManageVolumePrivilege	1196	winupdate.exe
Token: SeImpersonatePrivilege	1196	winupdate.exe
Token: SeCreateGlobalPrivilege	1196	winupdate.exe
Token: 33	1196	winupdate.exe
Token: 34	1196	winupdate.exe
Token: 35	1196	winupdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

winupdate.exe

pid process

1196 winupdate.exe

pid	process
1196	winupdate.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe

description	pid	process	target process
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe
PID 2000 wrote to memory of 1196	2000	6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe
"C:\Users\Admin\AppData\Local\Temp\6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649.exe"
1⤵
- Modifies WinLogon for persistence
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
2⤵
- Executes dropped EXE
- Checks BIOS information in registry
- Loads dropped DLL
- Adds Run key to start application
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1196

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

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
C:\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
\Windupdt\winupdate.exe
Filesize
812KB

MD5
5872996a80069af442c88f5cd6bb9020

SHA1
b49e31d0aefded8fb0bc18045f635c1aa495e037

SHA256
6f37c0ab7515a676422d021d0cbdb629988149763fa5899fbf742f7791ea8649

SHA512
bbdae59d4c84506697cd84997075ccb20fe3d34354bfb2253e6140de7ae078b1416e1751974b5749b22e1ccd9733219bf0cec83a608b8bbc67363e31950a6cf4

Download Submit
memory/1196-56-0x0000000000000000-mapping.dmp

Download
memory/2000-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads