Analysis Overview
SHA256
dcf6d7b8ae5c8513a6dc5b2580641770f5376ef2754c1cd1d91f80a3b66e01f9
Threat Level: Known bad
The file 78.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 20:44
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 20:44
Reported
2020-11-04 20:46
Platform
win10v20201028
Max time kernel
13s
Max time network
111s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4632 wrote to memory of 4772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4632 wrote to memory of 4772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4632 wrote to memory of 4772 | 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\sm.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\sm.dll
Network
Files
memory/4772-0-0x0000000000000000-mapping.dmp
memory/4772-1-0x00000000030C0000-0x00000000030FF000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 20:44
Reported
2020-11-04 20:47
Platform
win7v20201028
Max time kernel
101s
Max time network
102s
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\sm.dll",DllRegisterServer --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sm.dll",DllRegisterServer --append="antani" --multiproc
Network
Files
memory/1436-0-0x0000000000000000-mapping.dmp
memory/2028-1-0x0000000000000000-mapping.dmp
memory/2028-2-0x0000000000370000-0x00000000003AF000-memory.dmp
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 20:44
Reported
2020-11-04 20:47
Platform
win10v20201028
Max time kernel
9s
Max time network
106s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1160 wrote to memory of 2712 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 1160 wrote to memory of 2712 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 2712 wrote to memory of 2708 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2712 wrote to memory of 2708 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2712 wrote to memory of 2708 | 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\sm.dll",DllRegisterServer --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\sm.dll",DllRegisterServer --append="antani" --multiproc
Network
Files
memory/2712-0-0x0000000000000000-mapping.dmp
memory/2708-1-0x0000000000000000-mapping.dmp
memory/2708-2-0x00000000045B0000-0x00000000045EF000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 20:44
Reported
2020-11-04 20:46
Platform
win7v20201028
Max time kernel
150s
Max time network
152s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1848 wrote to memory of 1412 | 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\sm.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\sm.dll
Network
Files
memory/1412-0-0x0000000000000000-mapping.dmp
memory/1412-1-0x00000000007B0000-0x00000000007EF000-memory.dmp