Analysis Overview
SHA256
6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db
Threat Level: Known bad
The file 6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db was found to be: Known bad.
Malicious Activity Summary
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
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-10-05 12:33
Signatures
Blackmatter family
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
Signatures
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe |
Modifies Control Panel
| 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: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.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
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1596 wrote to memory of 1736 | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1596 wrote to memory of 1736 | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1596 wrote to memory of 1736 | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1596 wrote to memory of 1736 | N/A | C:\Users\Admin\AppData\Local\Temp\6d4712df42ad0982041ef0e2e109ab5718b43830f2966bd9207a7fac3af883db.exe | C:\Windows\SysWOW64\WerFault.exe |
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
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
Signatures
BlackMatter Ransomware
Modifies extensions of user files
| 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
| 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 |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| 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 behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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