Malware Analysis Report

2024-09-09 18:37

Sample ID 240618-p5ssfathph
Target files.rar
SHA256 b2bf3753fffd1c058f60b8c0b9d5be9f165e92e91462729f2707534a4b3b69c2
Tags
stealc vidar persistence privilege_escalation stealer discovery spyware
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

b2bf3753fffd1c058f60b8c0b9d5be9f165e92e91462729f2707534a4b3b69c2

Threat Level: Known bad

The file files.rar was found to be: Known bad.

Malicious Activity Summary

stealc vidar persistence privilege_escalation stealer discovery spyware

Detect Vidar Stealer

Stealc

Vidar

Reads data files stored by FTP clients

Checks computer location settings

Suspicious use of SetThreadContext

Loads dropped DLL

Checks installed software on the system

Program crash

Event Triggered Execution: Netsh Helper DLL

Enumerates physical storage devices

Suspicious behavior: MapViewOfSection

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-18 12:55

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-18 12:55

Reported

2024-06-18 12:58

Platform

win7-20240221-en

Max time kernel

148s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Setup.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

Stealc

stealer stealc

Vidar

stealer vidar

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1756 set thread context of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1756 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 1756 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 1756 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 1756 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 1756 wrote to memory of 1264 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 1264 wrote to memory of 2580 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 2580 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2580 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2580 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe
PID 2580 wrote to memory of 2472 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\WerFault.exe

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

C:\Windows\SysWOW64\netsh.exe

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2580 -s 148

Network

N/A

Files

memory/1756-0-0x00000000744C0000-0x0000000074634000-memory.dmp

memory/1756-1-0x0000000077160000-0x0000000077309000-memory.dmp

memory/1756-7-0x00000000744D2000-0x00000000744D4000-memory.dmp

memory/1756-8-0x00000000744C0000-0x0000000074634000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\b8c0165d

MD5 2abeff3354b23521fde0e3cb18a0f839
SHA1 a830b1e5bd61ca8896d910194d9a3ab01487cb5c
SHA256 2502092d3700a14f3fae5128c12c576779fc496d43ae7f6ea57bc8779ade29d6
SHA512 1cbe37979d2bbbfe30849da6947873b5f97a988e58d17a0978b6d478a943168d39a5ddd8661260dc389960846d1d4a6238e905faa3023269d50d03eb24239eea

memory/1756-11-0x00000000744C0000-0x0000000074634000-memory.dmp

memory/1264-13-0x00000000744C0000-0x0000000074634000-memory.dmp

memory/1264-14-0x0000000077160000-0x0000000077309000-memory.dmp

memory/1264-16-0x00000000744C0000-0x0000000074634000-memory.dmp

\Users\Admin\AppData\Local\Temp\dcom.au3

MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

memory/1264-20-0x00000000744C0000-0x0000000074634000-memory.dmp

memory/2580-23-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/2580-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

memory/1264-24-0x00000000744C0000-0x0000000074634000-memory.dmp

memory/2580-26-0x00000000006A0000-0x0000000000DEC000-memory.dmp

memory/2580-33-0x00000000006A0000-0x0000000000DEC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 12:55

Reported

2024-06-18 12:58

Platform

win10v2004-20240508-en

Max time kernel

51s

Max time network

51s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Setup.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

Stealc

stealer stealc

Vidar

stealer vidar

Reads data files stored by FTP clients

spyware stealer

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:\Users\Admin\AppData\Local\Temp\dcom.au3 N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2828 set thread context of 3344 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe

Checks installed software on the system

discovery

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 N/A

Enumerates physical storage devices

Event Triggered Execution: Netsh Helper DLL

persistence privilege_escalation
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A
Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh C:\Windows\SysWOW64\netsh.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\dcom.au3 N/A

Delays execution with timeout.exe

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

Suspicious behavior: MapViewOfSection

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe N/A
N/A N/A C:\Windows\SysWOW64\netsh.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2828 wrote to memory of 3344 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2828 wrote to memory of 3344 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2828 wrote to memory of 3344 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 2828 wrote to memory of 3344 N/A C:\Users\Admin\AppData\Local\Temp\Setup.exe C:\Windows\SysWOW64\netsh.exe
PID 3344 wrote to memory of 4476 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3344 wrote to memory of 4476 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3344 wrote to memory of 4476 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3344 wrote to memory of 4476 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 3344 wrote to memory of 4476 N/A C:\Windows\SysWOW64\netsh.exe C:\Users\Admin\AppData\Local\Temp\dcom.au3
PID 4476 wrote to memory of 3696 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 4476 wrote to memory of 3696 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 4476 wrote to memory of 3696 N/A C:\Users\Admin\AppData\Local\Temp\dcom.au3 C:\Windows\SysWOW64\cmd.exe
PID 3696 wrote to memory of 2640 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3696 wrote to memory of 2640 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe
PID 3696 wrote to memory of 2640 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\timeout.exe

Processes

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

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

C:\Windows\SysWOW64\netsh.exe

C:\Windows\SysWOW64\netsh.exe

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Users\Admin\AppData\Local\Temp\dcom.au3

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c timeout /t 10 & del /f /q "C:\Users\Admin\AppData\Local\Temp\Setup.exe" & rd /s /q "C:\ProgramData\BAKEBAFIIECB" & exit

C:\Windows\SysWOW64\timeout.exe

timeout /t 10

Network

Country Destination Domain Proto
US 8.8.8.8:53 poocoin.online udp

Files

memory/2828-0-0x00000000744C0000-0x000000007463B000-memory.dmp

memory/2828-1-0x00007FF8CF2F0000-0x00007FF8CF4E5000-memory.dmp

memory/2828-7-0x00000000744D2000-0x00000000744D4000-memory.dmp

memory/2828-8-0x00000000744C0000-0x000000007463B000-memory.dmp

memory/2828-9-0x00000000744C0000-0x000000007463B000-memory.dmp

memory/3344-11-0x00000000744C1000-0x00000000744CF000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\b90396f6

MD5 e697c5e60f77d8da9f8a8bbba9958b72
SHA1 4f57bee30dae65e0aa9c817b803a7e913a106567
SHA256 0758a4bbff976a10ef53ef1f0d7b65c67b8fd97e073a687125e4eef5416a5aa1
SHA512 c30d2ca4ad1fb28a97aec62bcbd52bf7da1a2476e13391afa233c1bd23928d64920df0cd06a0b7217a57a03afa96179d5fd4a51132d0112d23dc18c2d9056d03

memory/3344-13-0x00007FF8CF2F0000-0x00007FF8CF4E5000-memory.dmp

memory/3344-16-0x00000000744C1000-0x00000000744CF000-memory.dmp

memory/3344-15-0x00000000744CE000-0x00000000744D0000-memory.dmp

memory/3344-20-0x00000000744C1000-0x00000000744CF000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\dcom.au3

MD5 c56b5f0201a3b3de53e561fe76912bfd
SHA1 2a4062e10a5de813f5688221dbeb3f3ff33eb417
SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
SHA512 195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

memory/4476-22-0x0000000001000000-0x000000000174C000-memory.dmp

memory/4476-24-0x00007FF8CF2F0000-0x00007FF8CF4E5000-memory.dmp

memory/4476-25-0x0000000061E00000-0x0000000061EF3000-memory.dmp

memory/4476-43-0x0000000001000000-0x000000000174C000-memory.dmp