Malware Analysis Report

2024-09-23 10:30

Sample ID 240614-kvz2jsxcmp
Target fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896
SHA256 fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896
Tags
bootkit evasion persistence trojan
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896

Threat Level: Likely malicious

The file fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896 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 Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-14 08:56

Signatures

Unsigned PE

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

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 08:56

Reported

2024-06-14 08:58

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe

"C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe"

Network

Country Destination Domain Proto
US 52.111.229.48:443 tcp

Files

memory/1300-0-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-3-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-4-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-5-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-6-0x0000000000400000-0x0000000001DBD000-memory.dmp

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

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/1300-34-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-35-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-36-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-37-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-38-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-39-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-40-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-41-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-42-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/1300-43-0x0000000000400000-0x0000000001DBD000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 08:56

Reported

2024-06-14 08:58

Platform

win7-20240611-en

Max time kernel

141s

Max time network

127s

Command Line

"C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-39690363-730359138-1046745555-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.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\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe

"C:\Users\Admin\AppData\Local\Temp\fec62aef2700d026436dafef4f5e2d4fc43193a5e81fbcef1cca899426866896.exe"

Network

N/A

Files

memory/2404-0-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-3-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-4-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-5-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-6-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-7-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-8-0x0000000000400000-0x0000000001DBD000-memory.dmp

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

MD5 681496ec06a1de0b86c016432b484d1c
SHA1 d7cd30308a7865424124b448638ab2701abacb11
SHA256 50ea92c083a43e75d9ddb9f578c18c146fe5202f208d1e3ee0c047c7b544dea8
SHA512 9626c2013693b6d8dc62a6c26115349f88085f3f90c1b8791d7ce52541fe2f62ccbfad56937d14f762d3960c5dca593f8aa7d6de04b102f5b41a638306d71de0

memory/2404-36-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-37-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-38-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-39-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-40-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-41-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-42-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-43-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-44-0x0000000000400000-0x0000000001DBD000-memory.dmp

memory/2404-45-0x0000000000400000-0x0000000001DBD000-memory.dmp