Malware Analysis Report

2025-06-16 00:40

Sample ID 241110-zzmz4svlat
Target Loader.exe
SHA256 b58117445d7d23312d99f0664912fbd039c15d78b96d8f5453ee47f1c6983cc8
Tags
evasion execution persistence 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

b58117445d7d23312d99f0664912fbd039c15d78b96d8f5453ee47f1c6983cc8

Threat Level: Likely malicious

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

Malicious Activity Summary

evasion execution persistence trojan

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

Creates new service(s)

Drops file in Drivers directory

Checks BIOS information in registry

Checks whether UAC is enabled

Drops file in System32 directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Drops file in Windows directory

Launches sc.exe

Enumerates physical storage devices

Unsigned PE

Suspicious use of WriteProcessMemory

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: LoadsDriver

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-10 21:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-10 21:09

Reported

2024-11-10 21:41

Platform

win11-20241007-en

Max time kernel

445s

Max time network

1166s

Command Line

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

Creates new service(s)

persistence execution

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\System32\drivers\winhb.sys C:\Users\Admin\AppData\Local\Temp\Loader.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\Loader.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\Loader.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\Loader.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2859} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2869} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\System32\IME\IMETC\{69CD1F2D-DF68-4E23-9108-1B70783F2879} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2899} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2444} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\System32\config\RegBack\{69CD1F2D-DF68-4E23-9108-1B70783F2879} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

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

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-UPDATE} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2893} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2892} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A
File opened for modification C:\Windows\schemas\Provisioning\{69CD1F2D-DF68-4E23-9108-1B70783F2859} C:\Users\Admin\AppData\Local\Temp\Loader.exe N/A

Launches sc.exe

Description Indicator Process Target
N/A N/A C:\Windows\system32\sc.exe N/A
N/A N/A C:\Windows\system32\sc.exe N/A
N/A N/A C:\Windows\system32\sc.exe N/A
N/A N/A C:\Windows\system32\sc.exe N/A

Enumerates physical storage devices

Suspicious behavior: EnumeratesProcesses

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

Suspicious behavior: LoadsDriver

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 5004 wrote to memory of 2092 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 2092 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 2092 wrote to memory of 4240 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 2092 wrote to memory of 4240 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 5004 wrote to memory of 3912 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 3912 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 3912 wrote to memory of 3672 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 3912 wrote to memory of 3672 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 5004 wrote to memory of 4216 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 4216 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\System32\cmd.exe
PID 5004 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\system32\cmd.exe
PID 5004 wrote to memory of 2312 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\system32\cmd.exe
PID 4216 wrote to memory of 4312 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 4216 wrote to memory of 4312 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 2312 wrote to memory of 1076 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\certutil.exe
PID 2312 wrote to memory of 1076 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\certutil.exe
PID 2312 wrote to memory of 3028 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\find.exe
PID 2312 wrote to memory of 3028 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\find.exe
PID 2312 wrote to memory of 2604 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\find.exe
PID 2312 wrote to memory of 2604 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\find.exe
PID 4920 wrote to memory of 2624 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 4920 wrote to memory of 2624 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\sc.exe
PID 5004 wrote to memory of 5048 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\system32\cmd.exe
PID 5004 wrote to memory of 5048 N/A C:\Users\Admin\AppData\Local\Temp\Loader.exe C:\Windows\system32\cmd.exe

Processes

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

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

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys

C:\Windows\system32\sc.exe

sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C sc start windowsproc

C:\Windows\system32\sc.exe

sc start windowsproc

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /C sc start windowsproc

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"

C:\Windows\system32\certutil.exe

certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\Loader.exe" MD5

C:\Windows\system32\sc.exe

sc create windowsproc type=kernel binpath=C:\Windows\System32\drivers\winhb.sys

C:\Windows\system32\find.exe

find /i /v "md5"

C:\Windows\system32\find.exe

find /i /v "certutil"

C:\Windows\system32\sc.exe

sc start windowsproc

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c cls

Network

Country Destination Domain Proto
US 8.8.8.8:53 download.simpletoolz.fun udp
US 172.67.133.190:443 download.simpletoolz.fun tcp
GB 142.250.187.227:80 c.pki.goog tcp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 104.26.0.5:443 keyauth.win tcp
US 104.26.0.5:443 keyauth.win tcp
N/A 127.0.0.1:49760 tcp
N/A 127.0.0.1:49766 tcp

Files

memory/5004-0-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-1-0x00007FFD1CDE7000-0x00007FFD1CDE9000-memory.dmp

memory/5004-2-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-3-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-4-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-5-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-21-0x0000000140000000-0x00000001428E2000-memory.dmp

memory/5004-20-0x0000000140000000-0x00000001428E2000-memory.dmp