Malware Analysis Report

2025-06-16 03:39

Sample ID 240526-h822ysbc2s
Target cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c
SHA256 cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c
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

cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c

Threat Level: Likely malicious

The file cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c 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

Checks whether UAC is enabled

Writes to the Master Boot Record (MBR)

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-05-26 07:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-26 07:25

Reported

2024-05-26 07:27

Platform

win7-20240508-en

Max time kernel

142s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe

"C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe"

Network

N/A

Files

memory/2480-0-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-1-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-4-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-5-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-6-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-7-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-8-0x0000000000400000-0x00000000036B8000-memory.dmp

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

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/2480-36-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-37-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-38-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-39-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-40-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-41-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-42-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-43-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-44-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/2480-45-0x0000000000400000-0x00000000036B8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-26 07:25

Reported

2024-05-26 07:27

Platform

win10v2004-20240508-en

Max time kernel

140s

Max time network

104s

Command Line

"C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.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\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe

"C:\Users\Admin\AppData\Local\Temp\cce4faaf6c336afc83f65e69e41ccf3388b820d99493e53f935b1074b6d9720c.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 0.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
BE 88.221.83.218:443 www.bing.com tcp
US 8.8.8.8:53 218.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.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

Files

memory/4992-0-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-3-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-4-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-5-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-6-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-7-0x0000000000400000-0x00000000036B8000-memory.dmp

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

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/4992-35-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-36-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-37-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-38-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-39-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-40-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-41-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-42-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-43-0x0000000000400000-0x00000000036B8000-memory.dmp

memory/4992-44-0x0000000000400000-0x00000000036B8000-memory.dmp