Malware Analysis Report

2024-09-23 11:16

Sample ID 240614-289xcatfpj
Target be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e
SHA256 be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e
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

be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e

Threat Level: Likely malicious

The file be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e 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

win7-20240611-en

Max time kernel

120s

Max time network

121s

Command Line

"C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000_CLASSES\CertificateAuthority.Request\CLSID C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000_CLASSES\CertificateAuthority.Request C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-1340930862-1405011213-2821322012-1000_CLASSES\CertificateAuthority.Request\CLSID\Request ID (119xb5jgy57) = b1d25d9a958360e5f735ed87 C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe

"C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe"

Network

N/A

Files

memory/2148-0-0x0000000000400000-0x00000000019F6000-memory.dmp

memory/2148-1-0x00000000771A0000-0x00000000771A2000-memory.dmp

memory/2148-6-0x0000000000400000-0x00000000019F6000-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

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.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\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Modifies registry class

Description Indicator Process Target
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\CertificateAuthority.Request\CLSID C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Key created \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\CertificateAuthority.Request C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A
Set value (data) \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000_Classes\CertificateAuthority.Request\CLSID\Request ID (119xb5jgy57) = 81449d9a958360e5f735ed87 C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe

"C:\Users\Admin\AppData\Local\Temp\be852847e11d28e2987bb5bc0096f23c44c04356cec2c6c1592c736a7040dd8e.exe"

Network

Files

memory/1580-0-0x0000000000400000-0x00000000019F6000-memory.dmp

memory/1580-1-0x0000000077EC4000-0x0000000077EC6000-memory.dmp

memory/1580-5-0x0000000000400000-0x00000000019F6000-memory.dmp