Malware Analysis Report

2024-11-16 13:43

Sample ID 240608-bsat7sga26
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

Vidar

Stealc

Detect Vidar Stealer

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

Detects executables containing potential Windows Defender anti-emulation checks

Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Detect binaries embedding considerable number of MFA browser extension IDs.

Detects Windows executables referencing non-Windows User-Agents

Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Downloads MZ/PE file

Checks computer location settings

Reads user/profile data of web browsers

Reads data files stored by FTP clients

Checks installed software on the system

Accesses cryptocurrency files/wallets, possible credential harvesting

Suspicious use of SetThreadContext

Program crash

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

Checks processor information in registry

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-08 01:23

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-08 01:23

Reported

2024-06-08 01:29

Platform

win7-20240419-en

Max time kernel

118s

Max time network

123s

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 3028 -s 84

Network

N/A

Files

memory/3028-0-0x0000000000020000-0x0000000000021000-memory.dmp

memory/3028-1-0x0000000000020000-0x0000000000021000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-08 01:23

Reported

2024-06-08 01:29

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

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

Detect binaries embedding considerable number of MFA browser extension IDs.

Description Indicator Process Target
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Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs.

Description Indicator Process Target
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Detects Windows executables referencing non-Windows User-Agents

Description Indicator Process Target
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Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.

Description Indicator Process Target
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Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

Description Indicator Process Target
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Detects executables containing potential Windows Defender anti-emulation checks

Description Indicator Process Target
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Downloads MZ/PE file

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\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 4888 set thread context of 1976 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 4888 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1500 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1620 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 4888 wrote to memory of 1976 N/A C:\Users\Admin\AppData\Local\Temp\a3608a51db9df14c42f8c6e37ac49969de70b4be0862d82b5823c00aed395f9d.exe C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
PID 1976 wrote to memory of 2424 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 1976 wrote to memory of 2424 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 1976 wrote to memory of 2424 N/A C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe C:\Windows\SysWOW64\cmd.exe
PID 2424 wrote to memory of 3504 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2424 wrote to memory of 3504 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 2424 wrote to memory of 3504 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\JEBGCBAFCGDA" & 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 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 99.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 24.249.124.192.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
US 8.8.8.8:53 18.190.202.116.in-addr.arpa udp
US 8.8.8.8:53 74.32.126.40.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 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 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 136.71.105.51.in-addr.arpa udp

Files

memory/4888-0-0x0000000001090000-0x0000000001091000-memory.dmp

memory/4888-1-0x0000000001090000-0x0000000001091000-memory.dmp

memory/4888-3-0x0000000001090000-0x0000000001091000-memory.dmp

memory/1976-2-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-7-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-5-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-21-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-22-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-24-0x00000000192E0000-0x000000001953F000-memory.dmp

memory/1976-39-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-40-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-56-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-57-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-71-0x0000000000400000-0x0000000000648000-memory.dmp

memory/1976-72-0x0000000000400000-0x0000000000648000-memory.dmp