Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-bwjxaasdmn
Target 8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe
SHA256 8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5
Tags
stealc rave discovery evasion 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

8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5

Threat Level: Known bad

The file 8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe was found to be: Known bad.

Malicious Activity Summary

stealc rave discovery evasion stealer

Stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-20 01:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:29

Reported

2024-09-20 01:32

Platform

win7-20240903-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe"

Signatures

Stealc

stealer stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe

"C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/1884-0-0x0000000000C20000-0x0000000001113000-memory.dmp

memory/1884-1-0x0000000077100000-0x0000000077102000-memory.dmp

memory/1884-3-0x0000000000C20000-0x0000000001113000-memory.dmp

memory/1884-2-0x0000000000C21000-0x0000000000C35000-memory.dmp

memory/1884-4-0x0000000000C20000-0x0000000001113000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:29

Reported

2024-09-20 01:32

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe"

Signatures

Stealc

stealer stealc

Identifies VirtualBox via ACPI registry values (likely anti-VM)

evasion
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe

"C:\Users\Admin\AppData\Local\Temp\8503c70fbead261da27e53025df6a6e182303a71aa67947ed5bf3ace9e836ee5.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp

Files

memory/3464-0-0x0000000000910000-0x0000000000E03000-memory.dmp

memory/3464-1-0x0000000077644000-0x0000000077646000-memory.dmp

memory/3464-2-0x0000000000911000-0x0000000000925000-memory.dmp

memory/3464-3-0x0000000000910000-0x0000000000E03000-memory.dmp

memory/3464-4-0x0000000000910000-0x0000000000E03000-memory.dmp