Analysis Overview
SHA256
61b8878801a2967f58f306223b60ab54575a879bf07884f806501b4d01e9106a
Threat Level: Known bad
The file t11.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 21:59
Signatures
Analysis: behavioral3
Detonation Overview
Submitted
2020-11-04 21:59
Reported
2020-11-04 22:02
Platform
win7v20201028
Max time kernel
30s
Max time network
29s
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 --passegregor9 --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc
Network
Files
memory/1444-0-0x0000000000000000-mapping.dmp
memory/1992-1-0x0000000000000000-mapping.dmp
memory/1992-2-0x00000000001A0000-0x00000000001DF000-memory.dmp
Analysis: behavioral4
Detonation Overview
Submitted
2020-11-04 21:59
Reported
2020-11-04 22:02
Platform
win10v20201028
Max time kernel
12s
Max time network
110s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 428 wrote to memory of 2788 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 428 wrote to memory of 2788 | N/A | C:\Windows\system32\cmd.exe | C:\Windows\system32\rundll32.exe |
| PID 2788 wrote to memory of 3228 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2788 wrote to memory of 3228 | N/A | C:\Windows\system32\rundll32.exe | C:\Windows\SysWOW64\rundll32.exe |
| PID 2788 wrote to memory of 3228 | 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 --passegregor9 --append="antani" --multiproc
C:\Windows\SysWOW64\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\b.dll",DllRegisterServer --passegregor9 --append="antani" --multiproc
Network
Files
memory/2788-0-0x0000000000000000-mapping.dmp
memory/3228-1-0x0000000000000000-mapping.dmp
memory/3228-2-0x0000000004610000-0x000000000464F000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-04 21:59
Reported
2020-11-04 22:02
Platform
win7v20201028
Max time kernel
135s
Max time network
136s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1080 wrote to memory of 1228 | 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/1228-0-0x0000000000000000-mapping.dmp
memory/1228-1-0x00000000005D0000-0x000000000060F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-04 21:59
Reported
2020-11-04 22:02
Platform
win10v20201028
Max time kernel
13s
Max time network
110s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2724 wrote to memory of 1800 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2724 wrote to memory of 1800 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 2724 wrote to memory of 1800 | 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/1800-0-0x0000000000000000-mapping.dmp
memory/1800-1-0x0000000001110000-0x000000000114F000-memory.dmp