Malware Analysis Report

2025-05-06 00:48

Sample ID 241109-zbph2a1kbv
Target b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe
SHA256 b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b
Tags
xworm discovery evasion persistence rat 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

b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b

Threat Level: Known bad

The file b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe was found to be: Known bad.

Malicious Activity Summary

xworm discovery evasion persistence rat trojan

Xworm family

Detect Xworm Payload

Xworm

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

Identifies Wine through registry keys

Checks BIOS information in registry

Adds Run key to start application

Suspicious use of NtSetInformationThreadHideFromDebugger

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious behavior: AddClipboardFormatListener

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 20:32

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win7-20240903-en

Max time kernel

140s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Xworm family

xworm

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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe

"C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp

Files

memory/2640-0-0x0000000001380000-0x00000000017EC000-memory.dmp

memory/2640-1-0x0000000001380000-0x00000000017EC000-memory.dmp

memory/2640-2-0x0000000001380000-0x00000000017EC000-memory.dmp

memory/2640-4-0x0000000001380000-0x00000000017EC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 20:32

Reported

2024-11-09 20:35

Platform

win10v2004-20241007-en

Max time kernel

142s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe"

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Xworm family

xworm

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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Identifies Wine through registry keys

evasion
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Software\Wine C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe" C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of NtSetInformationThreadHideFromDebugger

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.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\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe

"C:\Users\Admin\AppData\Local\Temp\b738ac1ae6debdb89df7e074577c1f0c12dfb80fa6cb708e08f168b744386a6b.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
BG 87.120.112.33:8938 tcp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 75.117.19.2.in-addr.arpa udp
BG 87.120.112.33:8938 tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp
BG 87.120.112.33:8938 tcp
BG 87.120.112.33:8938 tcp

Files

memory/1372-0-0x0000000000DF0000-0x000000000125C000-memory.dmp

memory/1372-1-0x0000000000DF0000-0x000000000125C000-memory.dmp

memory/1372-2-0x0000000000DF0000-0x000000000125C000-memory.dmp

memory/1372-3-0x00000000076F0000-0x000000000778C000-memory.dmp

memory/1372-4-0x0000000008010000-0x00000000085B4000-memory.dmp

memory/1372-5-0x0000000007790000-0x00000000077F6000-memory.dmp

memory/1372-6-0x0000000007C00000-0x0000000007C92000-memory.dmp

memory/1372-7-0x0000000008730000-0x000000000873A000-memory.dmp

memory/1372-9-0x0000000000DF0000-0x000000000125C000-memory.dmp