darkcomet | bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae

General

Target

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Size

788KB
MD5

80ef70dc4d72c8e9b52410ee7338c9ae
SHA1

8679b445bfee7382a7ea7ec70331077ecea9d94b
SHA256

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae
SHA512

03488e16a34d6439c5dcde8726a2359ee9a997295c1bf3dff3a8734238272688a2bf749e03cf72d09d15139e81fbf418673a00fb24b2b4b09514f4e6eece0977
SSDEEP

12288:s0vdICiZcqd87ONMZ+UWAAFSPiOob2pLLCMjOoUS+uMqiK0NE8/b:xCcIJXUpPiOA2xLCMjuHueKAb

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:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.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"	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe

Executes dropped EXE 2 IoCs

Processes:

winupdate.exewinupdate.exe

pid process

628 winupdate.exe
1696 winupdate.exe

pid	process
628	winupdate.exe
1696	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:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exewinupdate.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windupdt\\winupdate.exe"	winupdate.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exewinupdate.exe

description	pid	process	target process
PID 616 set thread context of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 628 set thread context of 1696	628	winupdate.exe	winupdate.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:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery
T1018

Processes:

PING.EXE

pid process

1996 PING.EXE

pid	process
1996	PING.EXE

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exewinupdate.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeSecurityPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeTakeOwnershipPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeLoadDriverPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeSystemProfilePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeSystemtimePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeProfSingleProcessPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeIncBasePriorityPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeCreatePagefilePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeBackupPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeRestorePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeShutdownPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeDebugPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeSystemEnvironmentPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeChangeNotifyPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeRemoteShutdownPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeUndockPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeManageVolumePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeImpersonatePrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeCreateGlobalPrivilege	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: 33	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: 34	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: 35	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: 36	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
Token: SeIncreaseQuotaPrivilege	1696	winupdate.exe
Token: SeSecurityPrivilege	1696	winupdate.exe
Token: SeTakeOwnershipPrivilege	1696	winupdate.exe
Token: SeLoadDriverPrivilege	1696	winupdate.exe
Token: SeSystemProfilePrivilege	1696	winupdate.exe
Token: SeSystemtimePrivilege	1696	winupdate.exe
Token: SeProfSingleProcessPrivilege	1696	winupdate.exe
Token: SeIncBasePriorityPrivilege	1696	winupdate.exe
Token: SeCreatePagefilePrivilege	1696	winupdate.exe
Token: SeBackupPrivilege	1696	winupdate.exe
Token: SeRestorePrivilege	1696	winupdate.exe
Token: SeShutdownPrivilege	1696	winupdate.exe
Token: SeDebugPrivilege	1696	winupdate.exe
Token: SeSystemEnvironmentPrivilege	1696	winupdate.exe
Token: SeChangeNotifyPrivilege	1696	winupdate.exe
Token: SeRemoteShutdownPrivilege	1696	winupdate.exe
Token: SeUndockPrivilege	1696	winupdate.exe
Token: SeManageVolumePrivilege	1696	winupdate.exe
Token: SeImpersonatePrivilege	1696	winupdate.exe
Token: SeCreateGlobalPrivilege	1696	winupdate.exe
Token: 33	1696	winupdate.exe
Token: 34	1696	winupdate.exe
Token: 35	1696	winupdate.exe
Token: 36	1696	winupdate.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exewinupdate.exewinupdate.exe

pid process

616 bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
628 winupdate.exe
1696 winupdate.exe

pid	process
616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
628	winupdate.exe
1696	winupdate.exe

Suspicious use of WriteProcessMemory 37 IoCs

Processes:

bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exebfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.execmd.exewinupdate.exe

description	pid	process	target process
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 616 wrote to memory of 4912	616	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
PID 4912 wrote to memory of 628	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	winupdate.exe
PID 4912 wrote to memory of 628	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	winupdate.exe
PID 4912 wrote to memory of 628	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	winupdate.exe
PID 4912 wrote to memory of 620	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	cmd.exe
PID 4912 wrote to memory of 620	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	cmd.exe
PID 4912 wrote to memory of 620	4912	bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe	cmd.exe
PID 620 wrote to memory of 1996	620	cmd.exe	PING.EXE
PID 620 wrote to memory of 1996	620	cmd.exe	PING.EXE
PID 620 wrote to memory of 1996	620	cmd.exe	PING.EXE
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe
PID 628 wrote to memory of 1696	628	winupdate.exe	winupdate.exe

C:\Users\Admin\AppData\Local\Temp\bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
"C:\Users\Admin\AppData\Local\Temp\bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:616

C:\Users\Admin\AppData\Local\Temp\bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
C:\Users\Admin\AppData\Local\Temp\bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe
2⤵
- 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:4912

C:\Windupdt\winupdate.exe
"C:\Windupdt\winupdate.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:628

C:\Windupdt\winupdate.exe
C:\Windupdt\winupdate.exe
4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1696

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\bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae.exe"
3⤵
- Suspicious use of WriteProcessMemory
PID:620

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 5
4⤵
- Runs ping.exe
PID:1996

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

Replay Monitor

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Downloads

C:\Windupdt\winupdate.exe
Filesize
788KB

MD5
80ef70dc4d72c8e9b52410ee7338c9ae

SHA1
8679b445bfee7382a7ea7ec70331077ecea9d94b

SHA256
bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae

SHA512
03488e16a34d6439c5dcde8726a2359ee9a997295c1bf3dff3a8734238272688a2bf749e03cf72d09d15139e81fbf418673a00fb24b2b4b09514f4e6eece0977

Download Submit
C:\Windupdt\winupdate.exe
Filesize
788KB

MD5
80ef70dc4d72c8e9b52410ee7338c9ae

SHA1
8679b445bfee7382a7ea7ec70331077ecea9d94b

SHA256
bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae

SHA512
03488e16a34d6439c5dcde8726a2359ee9a997295c1bf3dff3a8734238272688a2bf749e03cf72d09d15139e81fbf418673a00fb24b2b4b09514f4e6eece0977

Download Submit
C:\Windupdt\winupdate.exe
Filesize
788KB

MD5
80ef70dc4d72c8e9b52410ee7338c9ae

SHA1
8679b445bfee7382a7ea7ec70331077ecea9d94b

SHA256
bfef082320559626427dc5f25be803c912e154e01705d163595877695210fcae

SHA512
03488e16a34d6439c5dcde8726a2359ee9a997295c1bf3dff3a8734238272688a2bf749e03cf72d09d15139e81fbf418673a00fb24b2b4b09514f4e6eece0977

Download Submit
memory/620-143-0x0000000000000000-mapping.dmp

Download
memory/628-139-0x0000000000000000-mapping.dmp

Download
memory/1696-147-0x0000000000000000-mapping.dmp

Download
memory/1696-151-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1696-152-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1696-153-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/1996-146-0x0000000000000000-mapping.dmp

Download
memory/4912-138-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4912-137-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4912-136-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4912-134-0x0000000000000000-mapping.dmp

Download
memory/4912-145-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download
memory/4912-135-0x0000000000400000-0x00000000004B3000-memory.dmp

Filesize
716KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads