Malware Analysis Report

2024-10-16 03:25

Sample ID 201115-k6ej4g728s
Target b.dll
SHA256 4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321
Tags
egregor ransomware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321

Threat Level: Known bad

The file b.dll 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

2020-11-15 17:45

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-15 17:45

Reported

2020-11-15 17:47

Platform

win7v20201028

Max time kernel

3s

Max time network

11s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

Signatures

Egregor Ransomware

ransomware egregor

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\b.dll

Network

N/A

Files

memory/1972-0-0x0000000000000000-mapping.dmp

memory/1972-1-0x0000000000560000-0x000000000059F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-15 17:45

Reported

2020-11-15 17:47

Platform

win10v20201028

Max time kernel

9s

Max time network

112s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3968 wrote to memory of 864 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3968 wrote to memory of 864 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3968 wrote to memory of 864 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\b.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\b.dll

Network

N/A

Files

memory/864-0-0x0000000000000000-mapping.dmp

memory/864-1-0x0000000003410000-0x000000000344F000-memory.dmp