Malware Analysis Report

2025-08-05 12:42

Sample ID 230828-vpl8lsgc81
Target 5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e
SHA256 5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e
Tags
gh0strat purplefox rat rootkit trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

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

5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e

Threat Level: Known bad

The file 5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox rat rootkit trojan

Detect PurpleFox Rootkit

Gh0st RAT payload

Gh0strat

PurpleFox

Blocklisted process makes network request

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

N/A

Analysis: static1

Detonation Overview

Reported

2023-08-28 17:09

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-28 17:09

Reported

2023-08-28 17:12

Platform

win7-20230712-en

Max time kernel

135s

Max time network

147s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

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

rat gh0strat

PurpleFox

rootkit trojan purplefox

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1880 wrote to memory of 2464 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\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

Network

Country Destination Domain Proto
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp

Files

memory/2464-0-0x0000000002000000-0x0000000002192000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-28 17:09

Reported

2023-08-28 17:12

Platform

win10v2004-20230703-en

Max time kernel

143s

Max time network

157s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

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

rat gh0strat

PurpleFox

rootkit trojan purplefox

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4924 wrote to memory of 4140 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4924 wrote to memory of 4140 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 4924 wrote to memory of 4140 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\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\5c98bc48d85d18493fedbb3e8f0763c4e51fe2f42686788cd8d7235fd9d3757e.dll,#1

Network

Country Destination Domain Proto
HK 208.87.201.227:8090 tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 163.252.72.23.in-addr.arpa udp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 2.136.104.51.in-addr.arpa udp
HK 208.87.201.227:8090 tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
HK 208.87.201.227:8090 tcp
US 8.8.8.8:53 126.23.238.8.in-addr.arpa udp
HK 208.87.201.227:8090 tcp
US 8.8.8.8:53 233.141.123.20.in-addr.arpa udp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
HK 208.87.201.227:8090 tcp
US 8.8.8.8:53 67.112.168.52.in-addr.arpa udp

Files

memory/4140-0-0x0000000002AD0000-0x0000000002C62000-memory.dmp