Malware Analysis Report

2025-01-22 22:52

Sample ID 240908-b92dgsxhqr
Target a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f
SHA256 a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f
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

a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f

Threat Level: Known bad

The file a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f was found to be: Known bad.

Malicious Activity Summary

stealc rave discovery evasion stealer

Stealc

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

Identifies Wine through registry keys

Checks BIOS information in registry

Checks installed software on the system

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Checks processor information in registry

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-08 01:51

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-08 01:51

Reported

2024-09-08 01:53

Platform

win10v2004-20240802-en

Max time kernel

148s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Checks installed software on the system

discovery

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe

"C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4144 -ip 4144

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4144 -s 1504

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 tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 121.170.16.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/4144-0-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-1-0x0000000077DD4000-0x0000000077DD6000-memory.dmp

memory/4144-2-0x00000000004D1000-0x00000000004E5000-memory.dmp

memory/4144-3-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-4-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-5-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-6-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-7-0x00000000004D0000-0x0000000000B4A000-memory.dmp

memory/4144-8-0x00000000004D0000-0x0000000000B4A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-08 01:51

Reported

2024-09-08 01:54

Platform

win11-20240802-en

Max time kernel

91s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4272559161-3282441186-401869126-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.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\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe

"C:\Users\Admin\AppData\Local\Temp\a386708b0e8b4235e3dee365a807a1ce9cd020c07c2999d6fa5f727f73ab1b4f.exe"

Network

Country Destination Domain Proto
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 8.8.8.8.in-addr.arpa udp

Files

memory/2624-0-0x00000000000E0000-0x000000000075A000-memory.dmp

memory/2624-1-0x0000000077DC6000-0x0000000077DC8000-memory.dmp

memory/2624-2-0x00000000000E1000-0x00000000000F5000-memory.dmp

memory/2624-3-0x00000000000E0000-0x000000000075A000-memory.dmp

memory/2624-4-0x00000000000E0000-0x000000000075A000-memory.dmp