Analysis Overview
SHA256
2473441e6f56cfefbfe844f80aaede0508690588c474da36e2ee91c5b64f69b5
Threat Level: Known bad
The file 5326621725851648.zip was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2021-11-08 09:40
Signatures
Analysis: behavioral2
Detonation Overview
Submitted
2021-11-08 09:40
Reported
2021-11-08 09:43
Platform
win10-en-20211104
Max time kernel
122s
Max time network
122s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 60 wrote to memory of 4036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 60 wrote to memory of 4036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 60 wrote to memory of 4036 | 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\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll
Network
| Country | Destination | Domain | Proto |
| US | 52.109.8.20:443 | tcp | |
| US | 8.8.8.8:53 | time.windows.com | udp |
| NL | 40.119.148.38:123 | time.windows.com | udp |
| US | 8.8.8.8:53 | sv.symcb.com | udp |
| US | 93.184.220.29:80 | sv.symcb.com | tcp |
| US | 8.8.8.8:53 | s.symcb.com | udp |
| US | 93.184.220.29:80 | s.symcb.com | tcp |
| US | 8.8.8.8:53 | ts-crl.ws.symantec.com | udp |
| US | 72.21.91.29:80 | ts-crl.ws.symantec.com | tcp |
Files
memory/4036-118-0x0000000000000000-mapping.dmp
memory/4036-119-0x0000000000DB0000-0x0000000000DEF000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2021-11-08 09:40
Reported
2021-11-08 09:43
Platform
win7-en-20211104
Max time kernel
117s
Max time network
117s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1608 wrote to memory of 772 | 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\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll
Network
Files
memory/1608-55-0x000007FEFB8D1000-0x000007FEFB8D3000-memory.dmp
memory/772-56-0x0000000000000000-mapping.dmp
memory/772-57-0x0000000075141000-0x0000000075143000-memory.dmp
memory/772-58-0x0000000000340000-0x000000000037F000-memory.dmp