Analysis Overview
SHA256
b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6
Threat Level: Known bad
The file b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6 was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2020-12-09 18:28
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2020-12-09 18:28
Reported
2020-12-09 18:31
Platform
win7v20201028
Max time kernel
3s
Max time network
11s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1204 wrote to memory of 2016 | 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\b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.dll
Network
Files
memory/2016-2-0x0000000000000000-mapping.dmp
memory/2016-3-0x0000000000380000-0x00000000003BF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2020-12-09 18:28
Reported
2020-12-09 18:31
Platform
win10v20201028
Max time kernel
15s
Max time network
112s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 816 wrote to memory of 1940 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 816 wrote to memory of 1940 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 816 wrote to memory of 1940 | 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\b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.dll
Network
Files
memory/1940-2-0x0000000000000000-mapping.dmp
memory/1940-3-0x0000000000CB0000-0x0000000000CEF000-memory.dmp