Analysis Overview
SHA256
a7fe915517ec1fff09e9b59be27d2ab81c3bbb018c80583ea7ac94ce9185472a
Threat Level: Known bad
The file t3.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 18:15
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 18:15
Reported
2020-11-04 18:18
Platform
win7v20201028
Max time kernel
2s
Max time network
8s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1640 wrote to memory of 2028 | 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/2028-0-0x0000000000000000-mapping.dmp
memory/2028-1-0x0000000000220000-0x000000000025F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 18:15
Reported
2020-11-04 18:18
Platform
win10v20201028
Max time kernel
12s
Max time network
111s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4764 wrote to memory of 4864 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4764 wrote to memory of 4864 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 4764 wrote to memory of 4864 | 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/4864-0-0x0000000000000000-mapping.dmp
memory/4864-1-0x0000000002CA0000-0x0000000002CDF000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 18:15
Reported
2020-11-04 18:18
Platform
win7v20201028
Max time kernel
70s
Max time network
68s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 996 wrote to memory of 452 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 996 wrote to memory of 452 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 996 wrote to memory of 452 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
Processes
C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\spr2.bat"
C:\Windows\system32\rundll32.exe
rundll32.exe "\\SRV01QW\sp\b.dll",DllRegisterServer --passegregor10 --append="carraro" --multiproc
Network
Files
memory/452-0-0x0000000000000000-mapping.dmp
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 18:15
Reported
2020-11-04 18:18
Platform
win10v20201028
Max time kernel
11s
Max time network
112s
Command Line
Signatures
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4012 wrote to memory of 804 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 4012 wrote to memory of 804 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
Processes
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\spr2.bat"
C:\Windows\system32\rundll32.exe
rundll32.exe "\\SRV01QW\sp\b.dll",DllRegisterServer --passegregor10 --append="carraro" --multiproc
Network
| Country | Destination | Domain | Proto |
| N/A | 52.109.12.19:443 | tcp |
Files
memory/804-0-0x0000000000000000-mapping.dmp