Malware Analysis Report

2024-10-10 08:02

Sample ID 240611-zhtrbs1clj
Target WindowsFormsApp1_protected.exe
SHA256 cad88795d87cb584074e90572ea83e0c870a98128eb2d5f12af130d76ee20772
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: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
9/10

SHA256

cad88795d87cb584074e90572ea83e0c870a98128eb2d5f12af130d76ee20772

Threat Level: Likely malicious

The file WindowsFormsApp1_protected.exe was found to be: Likely malicious.

Malicious Activity Summary

themida evasion trojan

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

Checks BIOS information in registry

Themida packer

Checks whether UAC is enabled

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-11 20:43

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

2024-06-11 20:43

Reported

2024-06-11 20:46

Platform

win10-20240404-en

Max time kernel

79s

Max time network

83s

Command Line

"C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.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\WindowsFormsApp1_protected.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\WindowsFormsApp1_protected.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.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

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\WindowsFormsApp1_protected.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe

"C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 80.121.18.2.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/1296-0-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/1296-1-0x00007FFD48F51000-0x00007FFD48F52000-memory.dmp

memory/1296-2-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-3-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-4-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-5-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-6-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-7-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-8-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-9-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/1296-10-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/1296-12-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/1296-13-0x00007FFD48EF0000-0x00007FFD49139000-memory.dmp

memory/1296-14-0x00007FFD48F51000-0x00007FFD48F52000-memory.dmp

memory/1296-16-0x0000000140000000-0x0000000140C3A000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-11 20:43

Reported

2024-06-11 20:46

Platform

win10v2004-20240611-en

Max time kernel

92s

Max time network

94s

Command Line

"C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.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\WindowsFormsApp1_protected.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\WindowsFormsApp1_protected.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.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

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\WindowsFormsApp1_protected.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe

"C:\Users\Admin\AppData\Local\Temp\WindowsFormsApp1_protected.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/2708-0-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/2708-1-0x00007FFADFE04000-0x00007FFADFE05000-memory.dmp

memory/2708-2-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-3-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-4-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-5-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-6-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/2708-7-0x0000000140000000-0x0000000140C3A000-memory.dmp

memory/2708-8-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-10-0x00007FFADFDA0000-0x00007FFAE0069000-memory.dmp

memory/2708-11-0x0000000140000000-0x0000000140C3A000-memory.dmp