Malware Analysis Report

2024-10-16 03:26

Sample ID 210726-8esdwhfz22
Target 967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample
SHA256 967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee
Tags
egregor ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee

Threat Level: Known bad

The file 967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample was found to be: Known bad.

Malicious Activity Summary

egregor ransomware

Egregor Ransomware

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2021-07-26 12:40

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-26 12:40

Reported

2021-07-26 12:48

Platform

win10v20210410

Max time kernel

10s

Max time network

113s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 772 wrote to memory of 588 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 772 wrote to memory of 588 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 772 wrote to memory of 588 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\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

Network

N/A

Files

memory/588-114-0x0000000000000000-mapping.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-26 12:40

Reported

2021-07-26 12:48

Platform

win7v20210408

Max time kernel

131s

Max time network

164s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 2044 wrote to memory of 1248 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\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\967422de1acc14deb7e7ce803d86aff44e2652bfcd550e3a34c2e37abc883dee.sample.dll

Network

N/A

Files

memory/2044-60-0x000007FEFBFB1000-0x000007FEFBFB3000-memory.dmp

memory/1248-61-0x0000000000000000-mapping.dmp

memory/1248-62-0x0000000076691000-0x0000000076693000-memory.dmp