Malware Analysis Report

2024-12-07 14:02

Sample ID 241118-qbhaaaskar
Target f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll
SHA256 f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63
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

f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63

Threat Level: Known bad

The file f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll was found to be: Known bad.

Malicious Activity Summary

rootkit gh0strat purplefox discovery

Gh0st RAT payload

Gh0strat family

Purplefox family

Detect PurpleFox Rootkit

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-18 13:05

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 13:05

Reported

2024-11-18 13:07

Platform

win7-20240903-en

Max time kernel

117s

Max time network

119s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.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
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2240 wrote to memory of 2396 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2396 wrote to memory of 2696 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2696 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2696 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2696 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2396 wrote to memory of 2716 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll,#1

C:\Windows\SysWOW64\cmd.exe

cmd /c md C:\Users\Public\Documents\MM

C:\Windows\SysWOW64\cmd.exe

cmd /c md C:\Users\Public\Documents\MM

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-18 13:05

Reported

2024-11-18 13:07

Platform

win10v2004-20241007-en

Max time kernel

92s

Max time network

140s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.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\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\f036b3031238597750e077c2d03b2bc41d089f9db461244059db8485fac28e63.dll,#1

C:\Windows\SysWOW64\cmd.exe

cmd /c md C:\Users\Public\Documents\MM

C:\Windows\SysWOW64\cmd.exe

cmd /c md C:\Users\Public\Documents\MM

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 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 76.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 241.42.69.40.in-addr.arpa udp
US 8.8.8.8:53 107.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp

Files

N/A