Malware Analysis Report

2024-11-16 13:32

Sample ID 240620-w7xbza1hlh
Target bros.exe
SHA256 8fbe5fb5df1a32d51b3dc796042e2a12d8f83afe9a6186be9b8af10acb695877
Tags
xworm 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

8fbe5fb5df1a32d51b3dc796042e2a12d8f83afe9a6186be9b8af10acb695877

Threat Level: Known bad

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

Malicious Activity Summary

xworm rat trojan

Xworm

Xworm family

Detect Xworm Payload

Drops startup file

Enumerates physical storage devices

Unsigned PE

Suspicious use of AdjustPrivilegeToken

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-06-20 18:34

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

2024-06-20 18:34

Reported

2024-06-20 18:36

Platform

win7-20240419-en

Max time kernel

147s

Max time network

119s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bros.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\bros.lnk C:\Users\Admin\AppData\Local\Temp\bros.exe N/A
File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bros.lnk C:\Users\Admin\AppData\Local\Temp\bros.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

N/A

Files

memory/2188-0-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

memory/2188-1-0x00000000010B0000-0x00000000010BE000-memory.dmp

memory/2188-6-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

memory/2188-7-0x000007FEF5D13000-0x000007FEF5D14000-memory.dmp

memory/2188-8-0x000007FEF5D10000-0x000007FEF66FC000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-20 18:34

Reported

2024-06-20 18:36

Platform

win10v2004-20240508-en

Max time kernel

148s

Max time network

100s

Command Line

"C:\Users\Admin\AppData\Local\Temp\bros.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\bros.lnk C:\Users\Admin\AppData\Local\Temp\bros.exe N/A
File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bros.lnk C:\Users\Admin\AppData\Local\Temp\bros.exe N/A

Enumerates physical storage devices

Suspicious use of AdjustPrivilegeToken

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

Processes

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

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

Network

Country Destination Domain Proto
US 52.111.229.43:443 tcp

Files

memory/1576-0-0x00007FFDCF893000-0x00007FFDCF895000-memory.dmp

memory/1576-1-0x0000000000DE0000-0x0000000000DEE000-memory.dmp

memory/1576-6-0x00007FFDCF890000-0x00007FFDD0351000-memory.dmp

memory/1576-7-0x00007FFDCF893000-0x00007FFDCF895000-memory.dmp

memory/1576-8-0x00007FFDCF890000-0x00007FFDD0351000-memory.dmp