Analysis Overview
SHA256
0bdce4d960e8b9537fbdcb4a70838be86163f355ba9f4344fd4982536924f27e
Threat Level: Known bad
The file 9bae897c19f237c22b6bdc024df27455e739be24bed07ef0d409f2df87eeda58.zip was found to be: Known bad.
Malicious Activity Summary
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
Analysis: static1
Detonation Overview
Reported
2023-04-12 17:51
Signatures
Blackmatter family
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
Signatures
BlackMatter Ransomware
Modifies extensions of user files
| 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 |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| 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 behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
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 |