Malware Analysis Report

2024-11-16 13:30

Sample ID 240621-x6qy8szfqd
Target upx.exe
SHA256 c8e088feb7de05c3852af588c1a440f61d06870a93b07a3c6b7e2c12c9d55b12
Tags
xworm 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

c8e088feb7de05c3852af588c1a440f61d06870a93b07a3c6b7e2c12c9d55b12

Threat Level: Known bad

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

Malicious Activity Summary

xworm persistence rat trojan

Xworm family

Xworm

Detect Xworm Payload

Drops startup file

Adds Run key to start application

Enumerates physical storage devices

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious behavior: AddClipboardFormatListener

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-21 19:28

Signatures

Detect Xworm Payload

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

Xworm family

xworm

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-21 19:28

Reported

2024-06-21 19:31

Platform

win10v2004-20240611-en

Max time kernel

140s

Max time network

147s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\runtime.lnk C:\Users\Admin\AppData\Local\Temp\upx.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\runtime.lnk C:\Users\Admin\AppData\Local\Temp\upx.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\runtime = "C:\\Users\\Admin\\AppData\\Roaming\\runtime.exe" C:\Users\Admin\AppData\Local\Temp\upx.exe N/A

Enumerates physical storage devices

Suspicious behavior: AddClipboardFormatListener

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 43.58.199.20.in-addr.arpa udp
DE 45.83.246.140:30120 tcp
US 8.8.8.8:53 140.246.83.45.in-addr.arpa udp
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 45.19.74.20.in-addr.arpa udp

Files

memory/2808-0-0x00000000000C0000-0x00000000000D8000-memory.dmp

memory/2808-1-0x00007FFE61783000-0x00007FFE61785000-memory.dmp

memory/2808-6-0x00007FFE61780000-0x00007FFE62241000-memory.dmp

memory/2808-7-0x00007FFE61783000-0x00007FFE61785000-memory.dmp

memory/2808-8-0x00007FFE61780000-0x00007FFE62241000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-21 19:28

Reported

2024-06-21 19:31

Platform

win11-20240611-en

Max time kernel

90s

Max time network

151s

Command Line

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

Signatures

Detect Xworm Payload

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

Xworm

trojan rat xworm

Drops startup file

Description Indicator Process Target
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\runtime.lnk C:\Users\Admin\AppData\Local\Temp\upx.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\runtime.lnk C:\Users\Admin\AppData\Local\Temp\upx.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-423582142-4191893794-1888535462-1000\Software\Microsoft\Windows\CurrentVersion\Run\runtime = "C:\\Users\\Admin\\AppData\\Roaming\\runtime.exe" C:\Users\Admin\AppData\Local\Temp\upx.exe N/A

Enumerates physical storage devices

Suspicious behavior: AddClipboardFormatListener

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of SetWindowsHookEx

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

Processes

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

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

Network

Country Destination Domain Proto
DE 45.83.246.140:30120 tcp
US 8.8.8.8:53 140.246.83.45.in-addr.arpa udp

Files

memory/2116-0-0x00007FFBAF1F3000-0x00007FFBAF1F5000-memory.dmp

memory/2116-1-0x0000000000020000-0x0000000000038000-memory.dmp

memory/2116-6-0x00007FFBAF1F0000-0x00007FFBAFCB2000-memory.dmp

memory/2116-7-0x00007FFBAF1F0000-0x00007FFBAFCB2000-memory.dmp