Malware Analysis Report

2024-10-16 03:26

Sample ID 210726-vlsbgpsbts
Target 3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample
SHA256 3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f
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

3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f

Threat Level: Known bad

The file 3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample 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

2021-07-26 12:40

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-07-26 12:40

Reported

2021-07-26 12:48

Platform

win7v20210410

Max time kernel

150s

Max time network

153s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 1088 wrote to memory of 2036 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\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

Network

N/A

Files

memory/1088-60-0x000007FEFBBF1000-0x000007FEFBBF3000-memory.dmp

memory/2036-61-0x0000000000000000-mapping.dmp

memory/2036-62-0x00000000753B1000-0x00000000753B3000-memory.dmp

memory/2036-64-0x00000000001C0000-0x00000000001FF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2021-07-26 12:40

Reported

2021-07-26 12:48

Platform

win10v20210408

Max time kernel

26s

Max time network

130s

Command Line

regsvr32 /s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

Signatures

Egregor Ransomware

ransomware egregor

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3920 wrote to memory of 1296 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3920 wrote to memory of 1296 N/A C:\Windows\system32\regsvr32.exe C:\Windows\SysWOW64\regsvr32.exe
PID 3920 wrote to memory of 1296 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\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

C:\Windows\SysWOW64\regsvr32.exe

/s C:\Users\Admin\AppData\Local\Temp\3fd510a3b2e0b0802d57cd5b1cac1e61797d50a08b87d9b5243becd9e2f7073f.sample.dll

Network

N/A

Files

memory/1296-114-0x0000000000000000-mapping.dmp

memory/1296-115-0x0000000003280000-0x00000000032BF000-memory.dmp