Malware Analysis Report

2025-08-05 19:43

Sample ID 240402-nk2n6sge3t
Target b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.zip
SHA256 29e2e5a04bfa5735b2f462fb2f22dec1e269260e40a87f87ef8e9350fa60e727
Tags
vidar debff3f4f38e9beeaf8e215a762c8549 stealer
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

29e2e5a04bfa5735b2f462fb2f22dec1e269260e40a87f87ef8e9350fa60e727

Threat Level: Known bad

The file b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.zip was found to be: Known bad.

Malicious Activity Summary

vidar debff3f4f38e9beeaf8e215a762c8549 stealer

Detect Vidar Stealer

Vidar

Suspicious use of SetThreadContext

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-04-02 11:28

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-02 11:28

Reported

2024-04-02 11:30

Platform

win7-20240221-en

Max time kernel

121s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.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 AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2236 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\SysWOW64\WerFault.exe
PID 2236 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\SysWOW64\WerFault.exe
PID 2236 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\SysWOW64\WerFault.exe
PID 2236 wrote to memory of 3040 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\SysWOW64\WerFault.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2236 wrote to memory of 2520 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe

"C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.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 2236 -s 568

Network

N/A

Files

memory/2236-0-0x0000000001050000-0x0000000001098000-memory.dmp

memory/2236-1-0x0000000074D00000-0x00000000753EE000-memory.dmp

memory/2236-3-0x0000000000320000-0x0000000000321000-memory.dmp

memory/2520-6-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2520-7-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2520-8-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2520-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

memory/2520-11-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2236-13-0x00000000024A0000-0x00000000044A0000-memory.dmp

memory/2520-10-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2520-9-0x0000000000400000-0x0000000000644000-memory.dmp

memory/2236-2-0x0000000000F70000-0x0000000000FB0000-memory.dmp

memory/2236-14-0x0000000074D00000-0x00000000753EE000-memory.dmp

memory/2236-15-0x0000000000F70000-0x0000000000FB0000-memory.dmp

memory/2236-16-0x00000000024A0000-0x00000000044A0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-02 11:28

Reported

2024-04-02 11:31

Platform

win10v2004-20240226-en

Max time kernel

143s

Max time network

165s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.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 4972 set thread context of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4972 wrote to memory of 3964 N/A C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.exe

"C:\Users\Admin\AppData\Local\Temp\b9220e18f15660f7649d01f17b9b787982442067449c0f27fce621f365b91edd.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 408 -p 4972 -ip 4972

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 844

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3964 -ip 3964

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 3964 -s 2352

Network

Country Destination Domain Proto
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 183.142.211.20.in-addr.arpa udp
US 8.8.8.8:53 steamcommunity.com udp
GB 104.82.234.109:443 steamcommunity.com tcp
US 8.8.8.8:53 202.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 109.234.82.104.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 24.66.18.2.in-addr.arpa udp
DE 168.119.60.168:443 168.119.60.168 tcp
US 8.8.8.8:53 168.60.119.168.in-addr.arpa udp
DE 168.119.60.168:443 168.119.60.168 tcp
DE 168.119.60.168:443 168.119.60.168 tcp
DE 168.119.60.168:443 168.119.60.168 tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 77.239.69.13.in-addr.arpa udp

Files

memory/4972-0-0x0000000000E80000-0x0000000000EC8000-memory.dmp

memory/4972-1-0x0000000074800000-0x0000000074FB0000-memory.dmp

memory/4972-2-0x00000000058B0000-0x00000000058C0000-memory.dmp

memory/4972-3-0x00000000057C0000-0x00000000057C1000-memory.dmp

memory/3964-6-0x0000000000400000-0x0000000000644000-memory.dmp

memory/3964-9-0x0000000000400000-0x0000000000644000-memory.dmp

memory/3964-11-0x0000000000400000-0x0000000000644000-memory.dmp

memory/4972-12-0x0000000003340000-0x0000000005340000-memory.dmp

memory/4972-19-0x0000000074800000-0x0000000074FB0000-memory.dmp