Malware Analysis Report

2024-10-16 03:26

Sample ID 220309-rrp6hahce6
Target 4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f
SHA256 4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f
Tags
egregor
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

4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f

Threat Level: Known bad

The file 4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f was found to be: Known bad.

Malicious Activity Summary

egregor

Egregor family

Detected Egregor ransomware

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2022-03-09 14:25

Signatures

Detected Egregor ransomware

Description Indicator Process Target
N/A N/A N/A N/A

Egregor family

egregor

Analysis: behavioral1

Detonation Overview

Submitted

2022-03-09 14:25

Reported

2022-03-09 14:28

Platform

win7-20220223-en

Max time kernel

4294182s

Max time network

124s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1924 wrote to memory of 1868 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

Network

N/A

Files

memory/1868-54-0x00000000759B1000-0x00000000759B3000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2022-03-09 14:25

Reported

2022-03-09 14:28

Platform

win10v2004-en-20220113

Max time kernel

143s

Max time network

147s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

Signatures

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4364 wrote to memory of 3876 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4364 wrote to memory of 3876 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4364 wrote to memory of 3876 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4ab48c37aacd488688e0f17e6ed6be740525a093cb5b0bb290b0ad0f33a8476f.dll,#1

Network

Country Destination Domain Proto
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp
NL 67.26.111.254:80 tcp
US 8.8.8.8:53 106.89.54.20.in-addr.arpa udp

Files

N/A