Analysis Overview
SHA256
fb192676689ade730c1aa72c2064df1137779a4e7c594f1575f1043d9eafcd5c
Threat Level: Known bad
The file t7.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 19:17
Signatures
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 19:17
Reported
2020-11-04 19:19
Platform
win10v20201028
Max time kernel
12s
Max time network
118s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3936 wrote to memory of 652 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 3936 wrote to memory of 652 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 652 wrote to memory of 588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 652 wrote to memory of 588 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 652 wrote to memory of 588 | 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 --passegregor09 --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor09 --append="antani" --multiproc
Network
Files
memory/652-0-0x0000000000000000-mapping.dmp
memory/588-1-0x0000000000000000-mapping.dmp
memory/588-2-0x0000000002E90000-0x0000000002ECF000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 19:17
Reported
2020-11-04 19:19
Platform
win7v20201028
Max time kernel
3s
Max time network
8s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1320 wrote to memory of 1184 | 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/1184-0-0x0000000000000000-mapping.dmp
memory/1184-1-0x0000000000240000-0x000000000027F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 19:17
Reported
2020-11-04 19:19
Platform
win10v20201028
Max time kernel
13s
Max time network
102s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1124 wrote to memory of 2024 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1124 wrote to memory of 2024 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1124 wrote to memory of 2024 | 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/2024-0-0x0000000000000000-mapping.dmp
memory/2024-1-0x0000000002A30000-0x0000000002A6F000-memory.dmp
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 19:17
Reported
2020-11-04 19:19
Platform
win7v20201028
Max time kernel
100s
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\b.dll",DllRegisterServer --passegregor09 --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor09 --append="antani" --multiproc
Network
Files
memory/1240-0-0x0000000000000000-mapping.dmp
memory/1284-1-0x0000000000000000-mapping.dmp
memory/1284-2-0x0000000001C60000-0x0000000001C9F000-memory.dmp