Analysis Overview
SHA256
c497ed1d0a24ab346937b45b5ba1110eb0983251155e22fd13796be224d452ed
Threat Level: Known bad
The file t10.zip was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2020-11-04 21:30
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 21:30
Reported
2020-11-04 21:32
Platform
win7v20201028
Max time kernel
3s
Max time network
9s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 292 wrote to memory of 1896 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b2.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b2.dll
Network
Files
memory/1896-0-0x0000000000000000-mapping.dmp
memory/1896-1-0x0000000000170000-0x00000000001AF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 21:30
Reported
2020-11-04 21:32
Platform
win10v20201028
Max time kernel
12s
Max time network
110s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1056 wrote to memory of 4000 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1056 wrote to memory of 4000 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1056 wrote to memory of 4000 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
Processes
C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b2.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b2.dll
Network
Files
memory/4000-0-0x0000000000000000-mapping.dmp
memory/4000-1-0x0000000002AB0000-0x0000000002AEF000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 21:30
Reported
2020-11-04 21:32
Platform
win7v20201028
Max time kernel
2s
Max time network
8s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
Processes
C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"
C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
Network
Files
memory/1344-0-0x0000000000000000-mapping.dmp
memory/1236-1-0x0000000000000000-mapping.dmp
memory/1236-2-0x0000000000330000-0x000000000036F000-memory.dmp
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 21:30
Reported
2020-11-04 21:32
Platform
win10v20201028
Max time kernel
79s
Max time network
80s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 640 wrote to memory of 2156 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 640 wrote to memory of 2156 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 2156 wrote to memory of 2548 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2156 wrote to memory of 2548 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2156 wrote to memory of 2548 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
Processes
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\spr3.bat"
C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b2.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
Network
Files
memory/2156-0-0x0000000000000000-mapping.dmp
memory/2548-1-0x0000000000000000-mapping.dmp
memory/2548-2-0x00000000033F0000-0x000000000342F000-memory.dmp