Malware Analysis Report

2024-10-24 18:40

Sample ID 211005-prennahgb2
Target 6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db
SHA256 6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db
Tags
32bd08ad5e5e881aa2634621d611a1a5 blackmatter ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db

Threat Level: Known bad

The file 6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db was found to be: Known bad.

Malicious Activity Summary

32bd08ad5e5e881aa2634621d611a1a5 blackmatter ransomware

BlackMatter Ransomware

Blackmatter family

Modifies extensions of user files

Enumerates connected drives

Sets desktop wallpaper using registry

Suspicious use of NtSetInformationThreadHideFromDebugger

Program crash

Modifies Control Panel

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: GetForegroundWindowSpam

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-10-05 12:33

Signatures

Blackmatter family

blackmatter

Analysis: behavioral1

Detonation Overview

Submitted

2021-10-05 12:33

Reported

2021-10-05 12:36

Platform

win7-en-20210920

Max time kernel

106s

Max time network

29s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe"

Signatures

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\International C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Suspicious behavior: GetForegroundWindowSpam

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WerFault.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe

"C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1596 -s 484

Network

N/A

Files

memory/1596-54-0x00000000757B1000-0x00000000757B3000-memory.dmp

memory/1596-55-0x0000000001FC5000-0x0000000001FD6000-memory.dmp

memory/1596-56-0x0000000001FC0000-0x0000000001FC1000-memory.dmp

memory/1736-57-0x0000000000000000-mapping.dmp

memory/1596-58-0x0000000001FD6000-0x0000000001FD7000-memory.dmp

memory/1736-59-0x0000000000430000-0x0000000000445000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-10-05 12:33

Reported

2021-10-05 12:36

Platform

win10-en-20210920

Max time kernel

113s

Max time network

116s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe"

Signatures

BlackMatter Ransomware

ransomware blackmatter

Modifies extensions of user files

ransomware
Description Indicator Process Target
File renamed C:\Users\Admin\Pictures\BlockSkip.tif => C:\Users\Admin\Pictures\BlockSkip.tif.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File opened for modification C:\Users\Admin\Pictures\BlockSkip.tif.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File renamed C:\Users\Admin\Pictures\DismountUninstall.png => C:\Users\Admin\Pictures\DismountUninstall.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File opened for modification C:\Users\Admin\Pictures\DismountUninstall.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File renamed C:\Users\Admin\Pictures\UnpublishUpdate.png => C:\Users\Admin\Pictures\UnpublishUpdate.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File opened for modification C:\Users\Admin\Pictures\UnpublishUpdate.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File renamed C:\Users\Admin\Pictures\WatchDisable.png => C:\Users\Admin\Pictures\WatchDisable.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
File opened for modification C:\Users\Admin\Pictures\WatchDisable.png.AVx2lZV2X C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\Z: C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Sets desktop wallpaper using registry

ransomware
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\AVx2lZV2X.bmp" C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\AVx2lZV2X.bmp" C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Modifies Control Panel

evasion
Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\International C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\WallpaperStyle = "10" C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeBackupPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: 36 N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeImpersonatePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeIncreaseQuotaPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: 33 N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeManageVolumePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeProfSingleProcessPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeRestorePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeSecurityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeSystemProfilePrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeTakeOwnershipPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe N/A
Token: SeShutdownPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.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

Processes

C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe

"C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe"

C:\Windows\system32\vssvc.exe

C:\Windows\system32\vssvc.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 mojobiden.com udp

Files

memory/3464-115-0x00000000030D3000-0x00000000030D5000-memory.dmp

memory/3464-116-0x00000000030D0000-0x00000000030D1000-memory.dmp