Malware Analysis Report

2024-10-16 03:26

Sample ID 211108-lng3tsbff7
Target 5326621725851648.zip
SHA256 2473441e6f56cfefbfe844f80aaede0508690588c474da36e2ee91c5b64f69b5
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

2473441e6f56cfefbfe844f80aaede0508690588c474da36e2ee91c5b64f69b5

Threat Level: Known bad

The file 5326621725851648.zip 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

2021-11-08 09:40

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2021-11-08 09:40

Reported

2021-11-08 09:43

Platform

win10-en-20211104

Max time kernel

122s

Max time network

122s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 60 wrote to memory of 4036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 60 wrote to memory of 4036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 60 wrote to memory of 4036 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\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

Network

Country Destination Domain Proto
US 52.109.8.20:443 tcp
US 8.8.8.8:53 time.windows.com udp
NL 40.119.148.38:123 time.windows.com udp
US 8.8.8.8:53 sv.symcb.com udp
US 93.184.220.29:80 sv.symcb.com tcp
US 8.8.8.8:53 s.symcb.com udp
US 93.184.220.29:80 s.symcb.com tcp
US 8.8.8.8:53 ts-crl.ws.symantec.com udp
US 72.21.91.29:80 ts-crl.ws.symantec.com tcp

Files

memory/4036-118-0x0000000000000000-mapping.dmp

memory/4036-119-0x0000000000DB0000-0x0000000000DEF000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2021-11-08 09:40

Reported

2021-11-08 09:43

Platform

win7-en-20211104

Max time kernel

117s

Max time network

117s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

Signatures

Egregor Ransomware

ransomware egregor

Processes

C:\Windows\system32\regsvr32.exe

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\4c9e3ffda0e663217638e6192a093bbc23cd9ebfbdf6d2fc683f331beaee0321.dll

Network

N/A

Files

memory/1608-55-0x000007FEFB8D1000-0x000007FEFB8D3000-memory.dmp

memory/772-56-0x0000000000000000-mapping.dmp

memory/772-57-0x0000000075141000-0x0000000075143000-memory.dmp

memory/772-58-0x0000000000340000-0x000000000037F000-memory.dmp