Malware Analysis Report

2024-10-16 03:22

Sample ID 230412-wfdesafd4y
Target 9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.zip
SHA256 0bdce4d960e8b9537fbdcb4a70838be86163f355ba9f4344fd4982536924f27e
Tags
4e591a315c54e8800dae714320555fa5 blackmatter ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

0bdce4d960e8b9537fbdcb4a70838be86163f355ba9f4344fd4982536924f27e

Threat Level: Known bad

The file 9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.zip was found to be: Known bad.

Malicious Activity Summary

4e591a315c54e8800dae714320555fa5 blackmatter ransomware

Blackmatter family

BlackMatter Ransomware

Modifies extensions of user files

Suspicious use of NtSetInformationThreadHideFromDebugger

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Uses Volume Shadow Copy service COM API

Modifies Control Panel

Modifies registry class

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-04-12 17:51

Signatures

Blackmatter family

blackmatter

Analysis: behavioral1

Detonation Overview

Submitted

2023-04-12 17:51

Reported

2023-04-12 18:01

Platform

win7-20230220-en

Max time kernel

419s

Max time network

423s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe"

Signatures

BlackMatter Ransomware

ransomware blackmatter

Modifies extensions of user files

ransomware
Description Indicator Process Target
File renamed C:\Users\Admin\Pictures\ExpandGet.png => C:\Users\Admin\Pictures\ExpandGet.png.seGgKiqg4 C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
File opened for modification C:\Users\Admin\Pictures\ExpandGet.png.seGgKiqg4 C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
File opened for modification C:\Users\Admin\Pictures\ShowGrant.tiff C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
File opened for modification C:\Users\Admin\Pictures\StopSet.tiff C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
File opened for modification C:\Users\Admin\Pictures\UpdateGet.tiff C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1563773381-2037468142-1146002597-1000\Control Panel\International C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\seGgKiqg4\DefaultIcon C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\seGgKiqg4 C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\seGgKiqg4\DefaultIcon\ = "C:\\ProgramData\\seGgKiqg4.ico" C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.seGgKiqg4 C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.seGgKiqg4\ = "seGgKiqg4" C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe N/A
Token: SeBackupPrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeRestorePrivilege N/A C:\Windows\system32\vssvc.exe N/A
Token: SeAuditPrivilege N/A C:\Windows\system32\vssvc.exe N/A

Uses Volume Shadow Copy service COM API

ransomware

Processes

C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe

"C:\Users\Admin\AppData\Local\Temp\9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 fluentzip.org udp

Files

memory/1048-55-0x0000000001F80000-0x0000000001FC0000-memory.dmp

memory/1048-56-0x0000000001F80000-0x0000000001FC0000-memory.dmp

C:\Users\seGgKiqg4.README.txt

MD5 0842767cb65fc2fd8159fe4f2b718945
SHA1 bff9ec531535e40e4f0f8365add7430d813ce035
SHA256 ce9645e29fd75e2b99ad49c64d40a1fb8a5412d8a9a8cd438a64664cfed539e7
SHA512 367d25b261a866a94d080e388b410485232cc00aee6862b01e164dbf0dac7f0182bf741aee95e5b7786dc6668e29fc604db3d12c17f802dc22361591dd435c7f