Malware Analysis Report

2024-10-10 07:51

Sample ID 240615-p6el7s1eqh
Target BALD.WIN_Fortnite_External.exe
SHA256 07c40b80e0caeb0e0dbd4b9a324c63fa2984f0be8549f312a292dceeb6bb4e79
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

07c40b80e0caeb0e0dbd4b9a324c63fa2984f0be8549f312a292dceeb6bb4e79

Threat Level: Likely malicious

The file BALD.WIN_Fortnite_External.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

2024-06-15 12:56

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

2024-06-15 12:56

Reported

2024-06-15 12:58

Platform

win7-20240611-en

Max time kernel

121s

Max time network

123s

Command Line

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Processes

C:\Users\Admin\AppData\Local\Temp\BALD.WIN_Fortnite_External.exe

"C:\Users\Admin\AppData\Local\Temp\BALD.WIN_Fortnite_External.exe"

Network

N/A

Files

memory/2236-0-0x0000000077250000-0x0000000077252000-memory.dmp

memory/2236-3-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-4-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-2-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-1-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-6-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-5-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-7-0x000000013FF80000-0x0000000140C5F000-memory.dmp

memory/2236-8-0x000000013FF80000-0x0000000140C5F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-15 12:56

Reported

2024-06-15 12:56

Platform

win10v2004-20240226-en

Max time kernel

14s

Max time network

20s

Command Line

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

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Processes

C:\Users\Admin\AppData\Local\Temp\BALD.WIN_Fortnite_External.exe

"C:\Users\Admin\AppData\Local\Temp\BALD.WIN_Fortnite_External.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 udp
N/A 172.217.169.74:443 tcp

Files

memory/4644-0-0x00007FF84DC50000-0x00007FF84DC52000-memory.dmp

memory/4644-1-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-3-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-2-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-4-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-5-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-6-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-7-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp

memory/4644-8-0x00007FF6A29E0000-0x00007FF6A36BF000-memory.dmp