Malware Analysis Report

2025-08-11 00:36

Sample ID 240331-m3dvdsae4s
Target file.exe
SHA256 58c48e2b1d3d26ac96cebf8c114750582d4cdeef46a05bbf706c4b4630c541ff
Tags
vidar stealer
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

58c48e2b1d3d26ac96cebf8c114750582d4cdeef46a05bbf706c4b4630c541ff

Threat Level: Known bad

The file file.exe was found to be: Known bad.

Malicious Activity Summary

vidar stealer

Detect Vidar Stealer

Vidar

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-31 10:59

Signatures

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-31 10:59

Reported

2024-03-31 11:01

Platform

win10v2004-20240226-en

Max time kernel

150s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

Detect Vidar Stealer

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

Vidar

stealer vidar

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 688 set thread context of 452 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 688 -ip 688

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 688 -s 876

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 452 -ip 452

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 452 -s 2108

Network

Country Destination Domain Proto
US 8.8.8.8:53 steamcommunity.com udp
GB 104.82.234.109:443 steamcommunity.com tcp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 109.234.82.104.in-addr.arpa udp
US 8.8.8.8:53 98.56.20.217.in-addr.arpa udp
DE 78.47.221.177:443 78.47.221.177 tcp
DE 78.47.221.177:443 78.47.221.177 tcp
US 8.8.8.8:53 177.221.47.78.in-addr.arpa udp
US 8.8.8.8:53 20.160.190.20.in-addr.arpa udp
DE 78.47.221.177:443 78.47.221.177 tcp
DE 78.47.221.177:443 78.47.221.177 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 udp

Files

memory/688-0-0x0000000000550000-0x000000000058C000-memory.dmp

memory/688-1-0x0000000075040000-0x00000000757F0000-memory.dmp

memory/452-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/452-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/688-9-0x0000000002AE0000-0x0000000004AE0000-memory.dmp

memory/452-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/688-12-0x0000000075040000-0x00000000757F0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-31 10:59

Reported

2024-03-31 11:01

Platform

win7-20240319-en

Max time kernel

118s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\file.exe"

Signatures

Detect Vidar Stealer

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

Vidar

stealer vidar

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\file.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2884 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2884 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2884 wrote to memory of 2988 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2884 wrote to memory of 2904 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\file.exe

"C:\Users\Admin\AppData\Local\Temp\file.exe"

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2884 -s 516

Network

N/A

Files

memory/2884-0-0x0000000000990000-0x00000000009CC000-memory.dmp

memory/2884-1-0x0000000074AE0000-0x00000000751CE000-memory.dmp

memory/2884-4-0x00000000020F0000-0x00000000040F0000-memory.dmp

memory/2904-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-6-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2904-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2884-13-0x0000000074AE0000-0x00000000751CE000-memory.dmp

memory/2884-14-0x00000000020F0000-0x00000000040F0000-memory.dmp