Malware Analysis Report

2024-12-07 14:02

Sample ID 241118-er9hxsxhnb
Target 4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9
SHA256 4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9
Tags
rootkit gh0strat purplefox discovery
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

4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9

Threat Level: Known bad

The file 4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9 was found to be: Known bad.

Malicious Activity Summary

rootkit gh0strat purplefox discovery

Detect PurpleFox Rootkit

Gh0st RAT payload

Gh0strat family

Purplefox family

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-18 04:11

Signatures

Detect PurpleFox Rootkit

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

Gh0st RAT payload

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

Gh0strat family

gh0strat

Purplefox family

purplefox

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-18 04:11

Reported

2024-11-18 04:14

Platform

win7-20240903-en

Max time kernel

121s

Max time network

125s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2128 wrote to memory of 2372 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-18 04:11

Reported

2024-11-18 04:15

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

157s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2528 wrote to memory of 2828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2528 wrote to memory of 2828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2528 wrote to memory of 2828 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\4a5315302188a9bb75a9315ffa85328674fec201342a517c902e3044f06484d9.dll,#1

Network

Country Destination Domain Proto
US 8.8.8.8:53 196.249.167.52.in-addr.arpa udp
US 8.8.8.8:53 20.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 8.8.8.8:53 181.129.81.91.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 34.197.79.40.in-addr.arpa udp

Files

N/A