Analysis Overview
SHA256
b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6
Threat Level: Known bad
The file b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.sample was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2021-10-20 10:08
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-10-20 10:08
Reported
2021-10-20 10:13
Platform
win10-en-20210920
Max time kernel
239s
Max time network
124s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3464 wrote to memory of 3212 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3464 wrote to memory of 3212 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3464 wrote to memory of 3212 | 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.sample.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\b9b71eb04d255b21e3272eef5f4c15d1c208183748dfad3569efd455d87879c6.sample.dll
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | time.windows.com | udp |
| NL | 20.101.57.9:123 | time.windows.com | udp |
Files
memory/3212-115-0x0000000000000000-mapping.dmp
memory/3212-116-0x0000000001120000-0x000000000115F000-memory.dmp