Malware Analysis Report

2025-01-22 22:52

Sample ID 240908-g7l4nstcpf
Target b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe
SHA256 b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5
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

b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5

Threat Level: Known bad

The file b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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

2024-09-08 06:26

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-08 06:26

Reported

2024-09-08 06:29

Platform

win7-20240704-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe

"C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe"

Network

Country Destination Domain Proto
RU 185.215.113.103:80 185.215.113.103 tcp

Files

memory/2520-0-0x0000000000130000-0x00000000007BC000-memory.dmp

memory/2520-1-0x0000000000130000-0x00000000007BC000-memory.dmp

memory/2520-3-0x0000000000130000-0x00000000007BC000-memory.dmp

memory/2520-2-0x0000000000130000-0x00000000007BC000-memory.dmp

memory/2520-4-0x0000000000130000-0x00000000007BC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-08 06:26

Reported

2024-09-08 06:29

Platform

win10v2004-20240802-en

Max time kernel

93s

Max time network

95s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.exe

"C:\Users\Admin\AppData\Local\Temp\b2fe8c8268889862ea8689e967c2a9f7920ebe74ceaf1997cc28bffe8b4ce2a5.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 8.8.8.8:53 103.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp

Files

memory/952-0-0x0000000000A70000-0x00000000010FC000-memory.dmp

memory/952-1-0x0000000077954000-0x0000000077956000-memory.dmp

memory/952-2-0x0000000000A71000-0x0000000000A85000-memory.dmp

memory/952-3-0x0000000000A70000-0x00000000010FC000-memory.dmp

memory/952-4-0x0000000000A70000-0x00000000010FC000-memory.dmp