Analysis Overview
SHA256
4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321
Threat Level: Known bad
The file b.dll was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2020-11-15 17:45
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-11-15 17:45
Reported
2020-11-15 17:47
Platform
win7v20201028
Max time kernel
3s
Max time network
11s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 288 wrote to memory of 1972 | 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/1972-0-0x0000000000000000-mapping.dmp
memory/1972-1-0x0000000000560000-0x000000000059F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-11-15 17:45
Reported
2020-11-15 17:47
Platform
win10v20201028
Max time kernel
9s
Max time network
112s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3968 wrote to memory of 864 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3968 wrote to memory of 864 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3968 wrote to memory of 864 | 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/864-0-0x0000000000000000-mapping.dmp
memory/864-1-0x0000000003410000-0x000000000344F000-memory.dmp