Malware Analysis Report

2024-11-16 13:43

Sample ID 240608-h77k2sbb27
Target a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe
SHA256 a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d
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

a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d

Threat Level: Known bad

The file a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe was found to be: Known bad.

Malicious Activity Summary

stealc vidar discovery spyware stealer

Detect Vidar Stealer

Vidar

Stealc

Downloads MZ/PE file

Reads data files stored by FTP clients

Reads user/profile data of web browsers

Checks computer location settings

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Enumerates physical storage devices

Program crash

Checks processor information in registry

Delays execution with timeout.exe

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-08 07:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 07:23

Reported

2024-06-08 07:26

Platform

win7-20240215-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe

"C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2320 -s 84

Network

N/A

Files

memory/2320-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/2320-1-0x0000000000020000-0x0000000000021000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 07:23

Reported

2024-06-08 07:26

Platform

win10v2004-20240426-en

Max time kernel

94s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe"

Signatures

Detect Vidar Stealer

stealer
Description Indicator Process Target
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Stealc

stealer stealc

Vidar

stealer vidar

Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\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 3368 set thread context of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.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 3368 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 2084 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 3624 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 3624 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 3624 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 3368 wrote to memory of 4788 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4788 wrote to memory of 1652 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4788 wrote to memory of 1652 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 4788 wrote to memory of 1652 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 1652 wrote to memory of 1512 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1652 wrote to memory of 1512 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 1652 wrote to memory of 1512 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe

"C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.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\AFHDHCAAKECF" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 t.me udp
NL 149.154.167.99:443 t.me tcp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
DE 116.202.190.18:5432 116.202.190.18 tcp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/3368-0-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

memory/3368-1-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

memory/3368-3-0x0000000000EC0000-0x0000000000EC1000-memory.dmp

memory/4788-2-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-10-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-11-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-13-0x000000001B430000-0x000000001B68F000-memory.dmp

memory/4788-28-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-29-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-45-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-46-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-57-0x0000000000400000-0x0000000000648000-memory.dmp

memory/4788-58-0x0000000000400000-0x0000000000648000-memory.dmp