Malware Analysis Report

2024-11-15 06:40

Sample ID 240603-k8fj3ahh5v
Target file.exe
SHA256 7d740bcc6e1ebdf1ec1a25242db7ab2aabbfa568394f0775287e28f69d526877
Tags
stealc vidar discovery spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

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

7d740bcc6e1ebdf1ec1a25242db7ab2aabbfa568394f0775287e28f69d526877

Threat Level: Known bad

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

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Downloads MZ/PE file

Checks computer location settings

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Accesses cryptocurrency files/wallets, possible credential harvesting

Checks installed software on the system

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Enumerates physical storage devices

Delays execution with timeout.exe

Checks processor information in registry

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-03 09:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-03 09:16

Reported

2024-06-03 09:18

Platform

win7-20240220-en

Max time kernel

120s

Max time network

121s

Command Line

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

Signatures

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 2868 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe
PID 2868 wrote to memory of 2268 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2868 -s 52

Network

N/A

Files

memory/2868-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2868-1-0x0000000000020000-0x0000000000021000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-03 09:16

Reported

2024-06-03 09:18

Platform

win10v2004-20240426-en

Max time kernel

149s

Max time network

151s

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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Checks installed software on the system

discovery

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2920 set thread context of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe

Enumerates physical storage devices

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe N/A

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\timeout.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2920 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 2436 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1200 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 2920 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\file.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1636 wrote to memory of 848 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 1636 wrote to memory of 848 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 1636 wrote to memory of 848 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 848 wrote to memory of 1500 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 848 wrote to memory of 1500 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 848 wrote to memory of 1500 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.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\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\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\FIIJJKKFHIEH" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
NL 149.154.167.99:443 t.me tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 245.158.13.49.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
DE 49.13.158.245:5432 49.13.158.245 tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp

Files

memory/2920-0-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

memory/2920-1-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

memory/2920-3-0x0000000000BF0000-0x0000000000BF1000-memory.dmp

memory/1636-2-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-5-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-7-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-10-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-11-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-14-0x000000001B700000-0x000000001B95F000-memory.dmp

memory/1636-28-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-29-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-45-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-46-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-57-0x0000000000400000-0x0000000000649000-memory.dmp

memory/1636-58-0x0000000000400000-0x0000000000649000-memory.dmp