Analysis Overview
SHA256
14529f9e8a7004dbb7c1a4518ea82f61183e0fbe41ff389addb48eb1e8673828
Threat Level: Known bad
The file t9.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 21:23
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 21:23
Reported
2020-11-04 21:25
Platform
win7v20201028
Max time kernel
136s
Max time network
136s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1880 wrote to memory of 1216 | 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\b.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b.dll
Network
Files
memory/1216-0-0x0000000000000000-mapping.dmp
memory/1216-1-0x00000000004F0000-0x000000000052F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 21:23
Reported
2020-11-04 21:25
Platform
win10v20201028
Max time kernel
12s
Max time network
115s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3980 wrote to memory of 396 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3980 wrote to memory of 396 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3980 wrote to memory of 396 | 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\b.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b.dll
Network
| Country | Destination | Domain | Proto |
| N/A | 52.109.12.18:443 | tcp |
Files
memory/396-0-0x0000000000000000-mapping.dmp
memory/396-1-0x0000000000E10000-0x0000000000E4F000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 21:23
Reported
2020-11-04 21:25
Platform
win7v20201028
Max time kernel
3s
Max time network
10s
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\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
Network
Files
memory/1172-0-0x0000000000000000-mapping.dmp
memory/2024-1-0x0000000000000000-mapping.dmp
memory/2024-2-0x00000000006D0000-0x000000000070F000-memory.dmp
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 21:23
Reported
2020-11-04 21:25
Platform
win10v20201028
Max time kernel
15s
Max time network
67s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 884 wrote to memory of 3932 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 884 wrote to memory of 3932 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 3932 wrote to memory of 3888 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3932 wrote to memory of 3888 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 3932 wrote to memory of 3888 | 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\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --Password10Char --append="antani" --multiproc
Network
Files
memory/3932-0-0x0000000000000000-mapping.dmp
memory/3888-1-0x0000000000000000-mapping.dmp
memory/3888-2-0x0000000002F50000-0x0000000002F8F000-memory.dmp