Malware Analysis Report

2025-06-16 03:53

Sample ID 241002-ks4lysxenk
Target 91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe
SHA256 91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8
Tags
stealc doma 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

91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8

Threat Level: Known bad

The file 91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe was found to be: Known bad.

Malicious Activity Summary

stealc doma 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

2024-10-02 08:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-10-02 08:52

Reported

2024-10-02 08:55

Platform

win7-20240903-en

Max time kernel

118s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe

"C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe"

Network

Country Destination Domain Proto
RU 185.215.113.37:80 185.215.113.37 tcp

Files

memory/1576-0-0x0000000000E40000-0x00000000014F6000-memory.dmp

memory/1576-2-0x0000000000E40000-0x00000000014F6000-memory.dmp

memory/1576-1-0x0000000000E40000-0x00000000014F6000-memory.dmp

memory/1576-3-0x0000000000E40000-0x00000000014F6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-10-02 08:52

Reported

2024-10-02 08:55

Platform

win10v2004-20240910-en

Max time kernel

133s

Max time network

102s

Command Line

"C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.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\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe

"C:\Users\Admin\AppData\Local\Temp\91d20ed7e7cb5e93f1a7c51ae70ff4f45bd444b9547f0dfad6dcccec6e7aa8b8.exe"

Network

Country Destination Domain Proto
RU 185.215.113.37:80 185.215.113.37 tcp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 37.113.215.185.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp

Files

memory/3232-0-0x0000000000980000-0x0000000001036000-memory.dmp

memory/3232-1-0x00000000772B4000-0x00000000772B6000-memory.dmp

memory/3232-2-0x0000000000981000-0x00000000009A4000-memory.dmp

memory/3232-3-0x0000000000980000-0x0000000001036000-memory.dmp

memory/3232-5-0x0000000000980000-0x0000000001036000-memory.dmp