Malware Analysis Report

2024-10-24 18:41

Sample ID 240920-bwyqfa1hqf
Target 8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe
SHA256 8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6
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

8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6

Threat Level: Known bad

The file 8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-20 01:30

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-20 01:30

Reported

2024-09-20 01:32

Platform

win7-20240704-en

Max time kernel

118s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3434294380-2554721341-1919518612-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe

"C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/1280-0-0x0000000000040000-0x0000000000519000-memory.dmp

memory/1280-1-0x0000000076EA0000-0x0000000076EA2000-memory.dmp

memory/1280-2-0x0000000000041000-0x0000000000055000-memory.dmp

memory/1280-3-0x0000000000040000-0x0000000000519000-memory.dmp

memory/1280-5-0x0000000000040000-0x0000000000519000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-20 01:30

Reported

2024-09-20 01:32

Platform

win10v2004-20240802-en

Max time kernel

95s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.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\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe

"C:\Users\Admin\AppData\Local\Temp\8b3898aae0a6f20fc81372005ce4bc784b1289f95a664b719f8164c98a8dc0d6.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
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 36.56.20.217.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.143.123.92.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/3516-0-0x00000000005B0000-0x0000000000A89000-memory.dmp

memory/3516-1-0x00000000770D4000-0x00000000770D6000-memory.dmp

memory/3516-2-0x00000000005B1000-0x00000000005C5000-memory.dmp

memory/3516-3-0x00000000005B0000-0x0000000000A89000-memory.dmp

memory/3516-4-0x00000000005B0000-0x0000000000A89000-memory.dmp