Malware Analysis Report

2024-12-07 13:53

Sample ID 241119-gmjg2s1brb
Target cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.dll
SHA256 cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4
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

cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4

Threat Level: Known bad

The file cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.dll 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

2024-11-19 05:55

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

2024-11-19 05:55

Reported

2024-11-19 05:57

Platform

win7-20240903-en

Max time kernel

120s

Max time network

122s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.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 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2500 wrote to memory of 2504 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 2504 wrote to memory of 2552 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2552 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2552 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2552 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2544 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 2504 wrote to memory of 2544 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\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.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

2024-11-19 05:55

Reported

2024-11-19 05:57

Platform

win10v2004-20241007-en

Max time kernel

149s

Max time network

159s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.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 3252 wrote to memory of 1696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3252 wrote to memory of 1696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 3252 wrote to memory of 1696 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1696 wrote to memory of 3224 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1696 wrote to memory of 3224 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1696 wrote to memory of 3224 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1696 wrote to memory of 4356 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1696 wrote to memory of 4356 N/A C:\Windows\SysWOW64\rundll32.exe C:\Windows\SysWOW64\cmd.exe
PID 1696 wrote to memory of 4356 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\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\cebf76deabb47efe7ad3769c0586815d1d45e2ef9718057de77abb46b554f6f4.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 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 86.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 14.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 56.163.245.4.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp

Files

N/A