darkcomet | 6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8

General

Target

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Size

680KB
MD5

ed5d29a9ba18920e91a5947fa81e10ee
SHA1

2900a0904d02f022c270f2996294bd3687b47135
SHA256

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8
SHA512

437f039df0d403bef6e05be82e41883ba4ceeb43448e9dcef878b003d96ba6d2f4c44240b4c973133df0c3dadf9b7dbca6227e87f91c118033c4347164f6be8e

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:

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

Executes dropped EXE 1 IoCs

Processes:

winupdate.exe

pid process

2960 winupdate.exe

pid	process
2960	winupdate.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

Processes:

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\International\Geo\Nation	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

winupdate.exe6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	winupdate.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Windupdt\\winupdate.exe"	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

4092 PING.EXE

pid	process
4092	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeSecurityPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeTakeOwnershipPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeLoadDriverPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeSystemProfilePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeSystemtimePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeProfSingleProcessPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeIncBasePriorityPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeCreatePagefilePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeBackupPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeRestorePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeShutdownPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeDebugPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeSystemEnvironmentPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeChangeNotifyPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeRemoteShutdownPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeUndockPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeManageVolumePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeImpersonatePrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeCreateGlobalPrivilege	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: 33	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: 34	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: 35	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: 36	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
Token: SeIncreaseQuotaPrivilege	2960	winupdate.exe
Token: SeSecurityPrivilege	2960	winupdate.exe
Token: SeTakeOwnershipPrivilege	2960	winupdate.exe
Token: SeLoadDriverPrivilege	2960	winupdate.exe
Token: SeSystemProfilePrivilege	2960	winupdate.exe
Token: SeSystemtimePrivilege	2960	winupdate.exe
Token: SeProfSingleProcessPrivilege	2960	winupdate.exe
Token: SeIncBasePriorityPrivilege	2960	winupdate.exe
Token: SeCreatePagefilePrivilege	2960	winupdate.exe
Token: SeBackupPrivilege	2960	winupdate.exe
Token: SeRestorePrivilege	2960	winupdate.exe
Token: SeShutdownPrivilege	2960	winupdate.exe
Token: SeDebugPrivilege	2960	winupdate.exe
Token: SeSystemEnvironmentPrivilege	2960	winupdate.exe
Token: SeChangeNotifyPrivilege	2960	winupdate.exe
Token: SeRemoteShutdownPrivilege	2960	winupdate.exe
Token: SeUndockPrivilege	2960	winupdate.exe
Token: SeManageVolumePrivilege	2960	winupdate.exe
Token: SeImpersonatePrivilege	2960	winupdate.exe
Token: SeCreateGlobalPrivilege	2960	winupdate.exe
Token: 33	2960	winupdate.exe
Token: 34	2960	winupdate.exe
Token: 35	2960	winupdate.exe
Token: 36	2960	winupdate.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.execmd.exe

description	pid	process	target process
PID 2016 wrote to memory of 2960	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	winupdate.exe
PID 2016 wrote to memory of 2960	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	winupdate.exe
PID 2016 wrote to memory of 2960	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	winupdate.exe
PID 2016 wrote to memory of 1972	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	cmd.exe
PID 2016 wrote to memory of 1972	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	cmd.exe
PID 2016 wrote to memory of 1972	2016	6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe	cmd.exe
PID 1972 wrote to memory of 4092	1972	cmd.exe	PING.EXE
PID 1972 wrote to memory of 4092	1972	cmd.exe	PING.EXE
PID 1972 wrote to memory of 4092	1972	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe
"C:\Users\Admin\AppData\Local\Temp\6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2016

C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe
"C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:2960

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k ping 127.0.0.1 -n 5 > NUL&del "C:\Users\Admin\AppData\Local\Temp\6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 5
3⤵
- Runs ping.exe
PID:4092

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

1

T1012

System Information Discovery

2

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe
MD5
ed5d29a9ba18920e91a5947fa81e10ee

SHA1
2900a0904d02f022c270f2996294bd3687b47135

SHA256
6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8

SHA512
437f039df0d403bef6e05be82e41883ba4ceeb43448e9dcef878b003d96ba6d2f4c44240b4c973133df0c3dadf9b7dbca6227e87f91c118033c4347164f6be8e

Download Submit
C:\ProgramData\Microsoft\Windows\Start Menu\Windupdt\winupdate.exe
MD5
ed5d29a9ba18920e91a5947fa81e10ee

SHA1
2900a0904d02f022c270f2996294bd3687b47135

SHA256
6cd7f3906f7f27fe29c4b66549d910fa4ea5e9b6dd133ee1a2701bac992fe6c8

SHA512
437f039df0d403bef6e05be82e41883ba4ceeb43448e9dcef878b003d96ba6d2f4c44240b4c973133df0c3dadf9b7dbca6227e87f91c118033c4347164f6be8e

Download Submit
memory/1972-118-0x0000000000000000-mapping.dmp

Download
memory/2016-114-0x00000000022E0000-0x00000000022E1000-memory.dmp

Filesize
4KB

Download
memory/2960-115-0x0000000000000000-mapping.dmp

Download
memory/2960-119-0x00000000021A0000-0x00000000021A1000-memory.dmp

Filesize
4KB

Download
memory/4092-120-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads