Malware Analysis Report

2024-12-07 04:13

Sample ID 241113-wk7jeszmdn
Target a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe
SHA256 a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025
Tags
discovery evasion trojan
score
10/10

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
10/10

SHA256

a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025

Threat Level: Known bad

The file a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe was found to be: Known bad.

Malicious Activity Summary

discovery evasion trojan

Modifies Windows Defender Real-time Protection settings

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

Windows security modification

Checks BIOS information in registry

Identifies Wine through registry keys

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-13 17:59

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-13 17:59

Reported

2024-11-13 18:02

Platform

win7-20240708-en

Max time kernel

117s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe"

Signatures

Modifies Windows Defender Real-time Protection settings

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

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\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.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\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe

"C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe"

Network

N/A

Files

memory/2196-0-0x0000000000F10000-0x00000000011B4000-memory.dmp

memory/2196-1-0x0000000000F10000-0x00000000011B4000-memory.dmp

memory/2196-2-0x0000000000F10000-0x00000000011B4000-memory.dmp

memory/2196-4-0x0000000000F10000-0x00000000011B4000-memory.dmp

memory/2196-6-0x0000000000F10000-0x00000000011B4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-13 17:59

Reported

2024-11-13 18:02

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe"

Signatures

Modifies Windows Defender Real-time Protection settings

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableRealtimeMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableScanOnRealtimeEnable = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableBehaviorMonitoring = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableIOAVProtection = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Policies\Microsoft\Windows Defender\Real-Time Protection\DisableOnAccessProtection = "1" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

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\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.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\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Features\TamperProtection = "0" C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe

"C:\Users\Admin\AppData\Local\Temp\a2c4792c72354a4d9ba484fd68dce51182e71eab8d7f479af4d7c76391342025.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 64.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 137.71.105.51.in-addr.arpa udp

Files

memory/4840-0-0x0000000000690000-0x0000000000934000-memory.dmp

memory/4840-2-0x0000000000690000-0x0000000000934000-memory.dmp

memory/4840-1-0x0000000000690000-0x0000000000934000-memory.dmp

memory/4840-4-0x0000000000690000-0x0000000000934000-memory.dmp

memory/4840-7-0x0000000000690000-0x0000000000934000-memory.dmp