Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-bzjexssbkb
Target 9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe
SHA256 9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9

Threat Level: Known bad

The file 9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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 01:34

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:34

Reported

2024-09-20 01:37

Platform

win10v2004-20240802-en

Max time kernel

94s

Max time network

137s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe

"C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 75.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 52.111.227.13:443 tcp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/2380-0-0x0000000000FE0000-0x00000000014B0000-memory.dmp

memory/2380-1-0x0000000077644000-0x0000000077646000-memory.dmp

memory/2380-2-0x0000000000FE1000-0x0000000000FF5000-memory.dmp

memory/2380-3-0x0000000000FE0000-0x00000000014B0000-memory.dmp

memory/2380-4-0x0000000000FE0000-0x00000000014B0000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:34

Reported

2024-09-20 01:37

Platform

win7-20240903-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.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\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe

"C:\Users\Admin\AppData\Local\Temp\9f039b4b539d2f8772d7115bfdd0e3c55db8f18ee0ef9cb255afa64ee518fab9.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/2556-0-0x0000000000870000-0x0000000000D40000-memory.dmp

memory/2556-1-0x0000000077510000-0x0000000077512000-memory.dmp

memory/2556-3-0x0000000000870000-0x0000000000D40000-memory.dmp

memory/2556-2-0x0000000000871000-0x0000000000885000-memory.dmp

memory/2556-4-0x0000000000870000-0x0000000000D40000-memory.dmp