Malware Analysis Report

2024-09-23 02:50

Sample ID 240715-txazwasbpb
Target XWorm.V5.6.zip
SHA256 8ba9b12031e5f17c36580506ed7ee0c396175a7f569dafe47b800fbb83624a61
Tags
agenttesla stormkitty xworm persistence
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8ba9b12031e5f17c36580506ed7ee0c396175a7f569dafe47b800fbb83624a61

Threat Level: Known bad

The file XWorm.V5.6.zip was found to be: Known bad.

Malicious Activity Summary

agenttesla stormkitty xworm persistence

Contains code to disable Windows Defender

Xworm family

Stormkitty family

Agenttesla family

Detect Xworm Payload

StormKitty payload

AgentTesla payload

Drops startup file

Checks computer location settings

Adds Run key to start application

Looks up external IP address via web service

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Uses Task Scheduler COM API

Scheduled Task/Job: Scheduled Task

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-07-15 16:25

Signatures

AgentTesla payload

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

Agenttesla family

agenttesla

Contains code to disable Windows Defender

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

Detect Xworm Payload

Description Indicator Process Target
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StormKitty payload

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

Stormkitty family

stormkitty

Xworm family

xworm

Unsigned PE

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Analysis: behavioral1

Detonation Overview

Submitted

2024-07-15 16:25

Reported

2024-07-15 16:26

Platform

win10v2004-20240709-en

Max time kernel

20s

Max time network

21s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe"

Signatures

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surrogate.lnk C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\COM Surrogate.lnk C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2650514177-1034912467-4025611726-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COM Surrogate = "C:\\Users\\Public\\COM Surrogate" C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Looks up external IP address via web service

Description Indicator Process Target
N/A ip-api.com N/A N/A

Enumerates physical storage devices

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4456 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe C:\Windows\System32\schtasks.exe
PID 4456 wrote to memory of 2308 N/A C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe

"C:\Users\Admin\AppData\Local\Temp\Xwrom\XWorm V5.6.exe"

C:\Windows\System32\schtasks.exe

"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "COM Surrogate" /tr "C:\Users\Public\COM Surrogate"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 81.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 13.107.21.237:443 g.bing.com tcp
US 8.8.8.8:53 237.21.107.13.in-addr.arpa udp
US 8.8.8.8:53 ip-api.com udp
US 208.95.112.1:80 ip-api.com tcp
US 8.8.8.8:53 1.112.95.208.in-addr.arpa udp
US 8.8.8.8:53 auto-london.gl.at.ply.gg udp
US 147.185.221.19:51655 auto-london.gl.at.ply.gg tcp

Files

memory/4456-0-0x0000000000E50000-0x0000000000ED0000-memory.dmp

memory/4456-1-0x00007FFBAEFD3000-0x00007FFBAEFD5000-memory.dmp

memory/4456-2-0x00007FFBAEFD0000-0x00007FFBAFA91000-memory.dmp