Malware Analysis Report

2025-08-11 00:37

Sample ID 240331-bc5pmsbd22
Target 059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe
SHA256 059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5
Tags
vidar 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

059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5

Threat Level: Known bad

The file 059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe was found to be: Known bad.

Malicious Activity Summary

vidar stealer

Detect Vidar Stealer

Vidar

Detects Windows executables referencing non-Windows User-Agents

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Suspicious use of SetThreadContext

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2024-03-31 01:00

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-31 01:00

Reported

2024-03-31 01:03

Platform

win7-20240221-en

Max time kernel

121s

Max time network

131s

Command Line

"C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.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

Vidar

stealer vidar

Detects Windows executables referencing non-Windows User-Agents

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

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\SysWOW64\WerFault.exe
PID 2876 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\SysWOW64\WerFault.exe
PID 2876 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\SysWOW64\WerFault.exe
PID 2876 wrote to memory of 2696 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\SysWOW64\WerFault.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2876 wrote to memory of 2652 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe

"C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.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 2876 -s 508

Network

N/A

Files

memory/2876-0-0x0000000000A50000-0x0000000000A8C000-memory.dmp

memory/2876-1-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2652-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2652-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2652-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2876-6-0x00000000021B0000-0x00000000041B0000-memory.dmp

memory/2652-8-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2652-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2876-10-0x00000000749D0000-0x00000000750BE000-memory.dmp

memory/2876-11-0x00000000021B0000-0x00000000041B0000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-31 01:00

Reported

2024-03-31 01:03

Platform

win10v2004-20240226-en

Max time kernel

144s

Max time network

160s

Command Line

"C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.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

Detects Windows executables referencing non-Windows User-Agents

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

Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

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

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1556 set thread context of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1556 wrote to memory of 2332 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2332 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2332 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1556 wrote to memory of 2124 N/A C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Processes

C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe

"C:\Users\Admin\AppData\Local\Temp\059f83868e7063b70bb6a36a7a9a618a4b3887c4dce94cc713d400e45b2337b5.exe"

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

"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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 1556 -ip 1556

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1556 -s 880

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2124 -ip 2124

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2124 -s 2340

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 65.192.122.92.in-addr.arpa udp
US 8.8.8.8:53 steamcommunity.com udp
GB 104.82.234.109:443 steamcommunity.com tcp
US 8.8.8.8:53 109.234.82.104.in-addr.arpa udp
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 40.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.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 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
DE 78.47.221.177:443 78.47.221.177 tcp
NL 52.142.223.178:80 tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 29.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 3.173.189.20.in-addr.arpa udp

Files

memory/1556-0-0x0000000074F50000-0x0000000075700000-memory.dmp

memory/1556-1-0x0000000000D90000-0x0000000000DCC000-memory.dmp

memory/2124-4-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2124-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/2124-9-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1556-10-0x0000000003220000-0x0000000005220000-memory.dmp

memory/1556-14-0x0000000074F50000-0x0000000075700000-memory.dmp