Malware Analysis Report

2024-10-16 03:25

Sample ID 201030-zask8k92bn
Target aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7
SHA256 aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7
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

aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7

Threat Level: Known bad

The file aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7 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

2020-10-30 03:10

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-10-30 03:10

Reported

2020-10-30 03:12

Platform

win7v20201028

Max time kernel

3s

Max time network

10s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.dll

Signatures

Egregor Ransomware

ransomware egregor

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.dll

Network

N/A

Files

memory/1512-0-0x0000000000000000-mapping.dmp

memory/1512-1-0x00000000002A0000-0x00000000002DF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-10-30 03:10

Reported

2020-10-30 03:12

Platform

win10v20201028

Max time kernel

11s

Max time network

106s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1100 wrote to memory of 2264 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1100 wrote to memory of 2264 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1100 wrote to memory of 2264 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.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\aee131ba1bfc4b6fa1961a7336e43d667086ebd2c7ff81029e14b2bf47d9f3a7.dll

Network

N/A

Files

memory/2264-0-0x0000000000000000-mapping.dmp

memory/2264-1-0x0000000004B90000-0x0000000004BCF000-memory.dmp