Malware Analysis Report

2024-09-23 11:18

Sample ID 240614-289lkstfnr
Target 722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840
SHA256 722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840
Tags
bootkit evasion persistence trojan
score
9/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840

Threat Level: Likely malicious

The file 722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840 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

Checks whether UAC is enabled

Writes to the Master Boot Record (MBR)

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Modifies registry class

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-14 23:16

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-14 23:16

Reported

2024-06-14 23:18

Platform

win7-20240508-en

Max time kernel

119s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Checks BIOS information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\CertificateAuthority.Request C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\CertificateAuthority.Request\CLSID\Request ID (119xb5jgy57) = 3104419a958360e5f735ed87 C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key created \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000_CLASSES\CertificateAuthority.Request\CLSID C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe

"C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe"

Network

N/A

Files

memory/2064-0-0x0000000000400000-0x00000000019D4000-memory.dmp

memory/2064-1-0x0000000077390000-0x0000000077392000-memory.dmp

memory/2064-5-0x0000000000400000-0x00000000019D4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-14 23:16

Reported

2024-06-14 23:18

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.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\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\CertificateAuthority.Request\CLSID C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Key created \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\CertificateAuthority.Request C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\CertificateAuthority.Request\CLSID\Request ID (119xb5jgy57) = 91a7f299958360e5f735ed87 C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe

"C:\Users\Admin\AppData\Local\Temp\722aeefe2f215994026d70087ccbb306f38f04e4c18cde5617b8ea84965ac840.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp

Files

memory/5064-0-0x0000000000400000-0x00000000019D4000-memory.dmp

memory/5064-1-0x0000000077B94000-0x0000000077B96000-memory.dmp

memory/5064-5-0x0000000000400000-0x00000000019D4000-memory.dmp