Malware Analysis Report

2024-10-18 21:31

Sample ID 240816-ym4xesxcjm
Target XWorm V5.6.zip
SHA256 8ba9b12031e5f17c36580506ed7ee0c396175a7f569dafe47b800fbb83624a61
Tags
agenttesla stormkitty xworm persistence
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 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

StormKitty payload

Contains code to disable Windows Defender

Detect Xworm Payload

Xworm family

Stormkitty family

Agenttesla family

AgentTesla payload

Executes dropped EXE

Drops startup file

Looks up external IP address via web service

Adds Run key to start application

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Scheduled Task/Job: Scheduled Task

Suspicious use of WriteProcessMemory

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Uses Task Scheduler COM API

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-16 19:55

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

Description Indicator Process Target
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Analysis: behavioral1

Detonation Overview

Submitted

2024-08-16 19:55

Reported

2024-08-16 19:57

Platform

win10v2004-20240802-en

Max time kernel

39s

Max time network

40s

Command Line

C:\Windows\Explorer.exe /idlist,,"C:\Users\Admin\AppData\Local\Temp\XWorm V5.6.zip"

Signatures

Drops startup file

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Public\COM Surrogate N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\COM Surrogate = "C:\\Users\\Public\\COM Surrogate" C:\Users\Admin\Desktop\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

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\Desktop\Xwrom\XWorm V5.6.exe N/A
N/A N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Public\COM Surrogate N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4412 wrote to memory of 624 N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe C:\Windows\System32\schtasks.exe
PID 4412 wrote to memory of 624 N/A C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe C:\Windows\System32\schtasks.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Windows\Explorer.exe

C:\Windows\Explorer.exe /idlist,,"C:\Users\Admin\AppData\Local\Temp\XWorm V5.6.zip"

C:\Windows\System32\rundll32.exe

C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding

C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe

"C:\Users\Admin\Desktop\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"

C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe

"C:\Users\Admin\Desktop\Xwrom\XWorm V5.6.exe"

C:\Users\Public\COM Surrogate

"C:\Users\Public\COM Surrogate"

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 134.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.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 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 147.142.123.92.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/4412-0-0x00007FFD049B3000-0x00007FFD049B5000-memory.dmp

memory/4412-1-0x00000000000C0000-0x0000000000140000-memory.dmp

memory/4412-2-0x00007FFD049B0000-0x00007FFD05471000-memory.dmp

memory/4412-6-0x00007FFD049B3000-0x00007FFD049B5000-memory.dmp

C:\Users\Public\COM Surrogate

MD5 bf1ccd2d127e4ac0dc4ad6307cd1b62f
SHA1 fc95eb4ec00d3b745fb97f7f8f140cfbe51c23ac
SHA256 b32c1554a1a62e6d4c30bad330e5146016fe11521671536c669b429b895e5a11
SHA512 0b6fcb5596904849c5d1ef7439af2849394a56a5f64d337b85cfe2158c8aff2c2a6db5a03c5464520537ec5a203f4c784db4e47d48dc16efdfe064a0e831a3ce

memory/4412-10-0x00007FFD049B0000-0x00007FFD05471000-memory.dmp