Malware Analysis Report

2025-06-16 03:39

Sample ID 240526-lz6wbsed6t
Target 237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482
SHA256 237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482
Tags
bootkit evasion persistence trojan
score
9/10

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
9/10

SHA256

237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482

Threat Level: Likely malicious

The file 237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482 was found to be: Likely malicious.

Malicious Activity Summary

bootkit evasion persistence trojan

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

Checks BIOS information in registry

Identifies Wine through registry keys

Writes to the Master Boot Record (MBR)

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 09:59

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-26 09:59

Reported

2024-05-26 10:01

Platform

win7-20240221-en

Max time kernel

141s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe"

Signatures

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\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3452737119-3959686427-228443150-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe

"C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe"

Network

N/A

Files

memory/2240-0-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-1-0x0000000075820000-0x0000000075821000-memory.dmp

memory/2240-4-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-5-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-6-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-7-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-8-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-9-0x0000000000400000-0x0000000001C89000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\pcsf.ini

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/2240-37-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-38-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-39-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-40-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-41-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-42-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-43-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-44-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/2240-45-0x0000000000400000-0x0000000001C89000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 09:59

Reported

2024-05-26 10:01

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe"

Signatures

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\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Checks whether UAC is enabled

evasion trojan
Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Writes to the Master Boot Record (MBR)

bootkit persistence
Description Indicator Process Target
File opened for modification \??\PhysicalDrive0 C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe

"C:\Users\Admin\AppData\Local\Temp\237ce1bb5b0a84d9de15f0d06194ed04057e34ec6b7d453a47c569b0a20f5482.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 82.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 194.61.62.23.in-addr.arpa udp
NL 23.62.61.194:443 www.bing.com tcp
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 52.111.229.43:443 tcp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 91.90.14.23.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 208.143.182.52.in-addr.arpa udp

Files

memory/396-0-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-3-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-4-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-5-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-6-0x0000000000400000-0x0000000001C89000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\pcsf.ini

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/396-34-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-35-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-36-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-37-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-38-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-39-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-40-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-41-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-42-0x0000000000400000-0x0000000001C89000-memory.dmp

memory/396-43-0x0000000000400000-0x0000000001C89000-memory.dmp