Malware Analysis Report

2024-10-10 08:09

Sample ID 240610-ra484ayfkr
Target nyxia external.exe
SHA256 19bddef132af20da74c89fb263b1ae89f9762eba06382e69cccdfc9048e45917
Tags
themida evasion 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 Overview

score
9/10

SHA256

19bddef132af20da74c89fb263b1ae89f9762eba06382e69cccdfc9048e45917

Threat Level: Likely malicious

The file nyxia external.exe was found to be: Likely malicious.

Malicious Activity Summary

themida evasion trojan

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

Themida packer

Checks BIOS information in registry

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-10 14:00

Signatures

Themida packer

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-10 14:00

Reported

2024-06-10 14:00

Platform

win10v2004-20240508-en

Max time kernel

6s

Max time network

9s

Command Line

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

Themida packer

themida
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A 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\nyxia external.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Suspicious behavior: EnumeratesProcesses

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

Processes

C:\Users\Admin\AppData\Local\Temp\nyxia external.exe

"C:\Users\Admin\AppData\Local\Temp\nyxia external.exe"

Network

Files

memory/1360-0-0x00007FF745430000-0x00007FF745D31000-memory.dmp

memory/1360-1-0x00007FFDED910000-0x00007FFDED912000-memory.dmp

memory/1360-2-0x00007FF745430000-0x00007FF745D31000-memory.dmp

memory/1360-3-0x00007FF745430000-0x00007FF745D31000-memory.dmp

memory/1360-4-0x00007FF745430000-0x00007FF745D31000-memory.dmp

memory/1360-5-0x00007FF745430000-0x00007FF745D31000-memory.dmp

memory/1360-6-0x00007FF745430000-0x00007FF745D31000-memory.dmp