Malware Analysis Report

2024-10-16 03:25

Sample ID 201011-9lde4rsyk2
Target b.bin
SHA256 a376fd507afe8a1b5d377d18436e5701702109ac9d3e7026d19b65a7d313b332
Tags
ransomware 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

a376fd507afe8a1b5d377d18436e5701702109ac9d3e7026d19b65a7d313b332

Threat Level: Known bad

The file b.bin was found to be: Known bad.

Malicious Activity Summary

ransomware egregor

Egregor Ransomware

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2020-10-11 22:18

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-10-11 22:18

Reported

2020-10-11 22:20

Platform

win7

Max time kernel

132s

Max time network

137s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b.bin.dll,#1

Signatures

Egregor Ransomware

ransomware egregor

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b.bin.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b.bin.dll,#1

Network

N/A

Files

memory/684-0-0x0000000000000000-mapping.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-10-11 22:18

Reported

2020-10-11 22:20

Platform

win10v200722

Max time kernel

13s

Max time network

112s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b.bin.dll,#1

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 408 wrote to memory of 988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 408 wrote to memory of 988 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 408 wrote to memory of 988 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\b.bin.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\b.bin.dll,#1

Network

N/A

Files

memory/988-0-0x0000000000000000-mapping.dmp