Analysis Overview
SHA256
3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f
Threat Level: Known bad
The file 3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.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
150s
Max time network
153s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 1088 wrote to memory of 2036 | 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\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll
Network
Files
memory/1088-60-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp
memory/2036-61-0x0000000000000000-mapping.dmp
memory/2036-62-0x00000000753B1000-0x00000000753B3000-memory.dmp
memory/2036-64-0x00000000001C0000-0x00000000001FF000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-07-26 12:40
Reported
2021-07-26 12:48
Platform
win10v20210408
Max time kernel
26s
Max time network
130s
Command Line
Signatures
Egregor Ransomware
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 3920 wrote to memory of 1296 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3920 wrote to memory of 1296 | N/A | C:\Windows\system32\regsvr32.exe | C:\Windows\SysWOW64\regsvr32.exe |
| PID 3920 wrote to memory of 1296 | 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\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll
C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll
Network
Files
memory/1296-114-0x0000000000000000-mapping.dmp
memory/1296-115-0x0000000003280000-0x00000000032BF000-memory.dmp