Analysis Overview
SHA256
aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7
Threat Level: Known bad
The file aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.sample was found to be: Known bad.
Malicious Activity Summary
Egregor Ransomware
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Analysis: static1
Detonation Overview
Reported
2021-07-26 12:40
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2021-07-26 12:40
Reported
2021-07-26 12:48
Platform
win7v20210410
Max time kernel
3s
Max time network
40s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 740 wrote to memory of 1816 | 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\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.sample.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.sample.dll
Network
Files
memory/740-60-0x000007FEFB8F1000-0x000007FEFB8F3000-memory.dmp
memory/1816-61-0x0000000000000000-mapping.dmp
memory/1816-62-0x00000000757E1000-0x00000000757E3000-memory.dmp
memory/1816-64-0x0000000000220000-0x000000000025F000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-26 12:40
Reported
2021-07-26 12:48
Platform
win10v20210410
Max time kernel
11s
Max time network
116s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3592 wrote to memory of 920 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3592 wrote to memory of 920 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3592 wrote to memory of 920 | 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\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.sample.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.sample.dll
Network
Files
memory/920-114-0x0000000000000000-mapping.dmp
memory/920-115-0x0000000003610000-0x000000000364F000-memory.dmp