Malware Analysis Report

2025-06-16 00:25

Sample ID 240929-tynblavdne
Target 6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445
SHA256 6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445
Tags
gh0strat purplefox discovery persistence rat rootkit 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

6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445

Threat Level: Known bad

The file 6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox discovery persistence rat rootkit trojan

PurpleFox

Gh0st RAT payload

Detect PurpleFox Rootkit

Gh0strat

Sets service image path in registry

Drops file in Drivers directory

Deletes itself

Executes dropped EXE

Loads dropped DLL

Drops file in System32 directory

System Location Discovery: System Language Discovery

Unsigned PE

System Network Configuration Discovery: Internet Connection Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious behavior: LoadsDriver

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-09-29 16:28

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-09-29 16:28

Reported

2024-09-29 16:30

Platform

win7-20240903-en

Max time kernel

146s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe"

Signatures

Detect PurpleFox Rootkit

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

Gh0st RAT payload

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

Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Vwopq.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Vwopq.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Vwopq.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Vwopq.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1956 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe C:\Windows\SysWOW64\cmd.exe
PID 1956 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe C:\Windows\SysWOW64\cmd.exe
PID 1956 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe C:\Windows\SysWOW64\cmd.exe
PID 1956 wrote to memory of 2264 N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe C:\Windows\SysWOW64\cmd.exe
PID 532 wrote to memory of 2500 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 532 wrote to memory of 2500 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 532 wrote to memory of 2500 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 532 wrote to memory of 2500 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2264 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2264 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2264 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2264 wrote to memory of 336 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe

"C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe"

C:\Windows\SysWOW64\Vwopq.exe

C:\Windows\SysWOW64\Vwopq.exe -auto

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\6EF754~1.EXE > nul

C:\Windows\SysWOW64\Vwopq.exe

C:\Windows\SysWOW64\Vwopq.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 124.248.70.196:24825 456466.a1.luyouxia.net tcp

Files

memory/1956-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 4caadcf8452526c30b29ba2e933071ee
SHA1 38b1eb7725a28ab401f483a83f8da914e61cfdeb
SHA256 6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445
SHA512 d29218f01bafd90fc2d4ed504622eb5751785d0ec70629b3e0cce17b1c67ad3b3468b6e9edec1ec20a19e58a670295bced7b9aabb0dff835062a0af6ad74d2d5

memory/2500-18-0x0000000010000000-0x000000001019F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-09-29 16:28

Reported

2024-09-29 16:30

Platform

win10v2004-20240802-en

Max time kernel

145s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe"

Signatures

Detect PurpleFox Rootkit

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

Gh0st RAT payload

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

Gh0strat

rat gh0strat

PurpleFox

rootkit trojan purplefox

Drops file in Drivers directory

Description Indicator Process Target
File created C:\Windows\system32\drivers\QAssist.sys C:\Windows\SysWOW64\Vwopq.exe N/A

Sets service image path in registry

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" C:\Windows\SysWOW64\Vwopq.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Vwopq.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\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Vwopq.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious behavior: LoadsDriver

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Vwopq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Vwopq.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe

"C:\Users\Admin\AppData\Local\Temp\6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445.exe"

C:\Windows\SysWOW64\Vwopq.exe

C:\Windows\SysWOW64\Vwopq.exe -auto

C:\Windows\SysWOW64\cmd.exe

C:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\6EF754~1.EXE > nul

C:\Windows\SysWOW64\Vwopq.exe

C:\Windows\SysWOW64\Vwopq.exe -acsi

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 97.17.167.52.in-addr.arpa udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 98.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 101.209.201.84.in-addr.arpa udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp
US 8.8.8.8:53 456466.a1.luyouxia.net udp
CN 183.131.85.64:24825 456466.a1.luyouxia.net tcp

Files

memory/3396-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 4caadcf8452526c30b29ba2e933071ee
SHA1 38b1eb7725a28ab401f483a83f8da914e61cfdeb
SHA256 6ef75442a68ae42bc42480b4a34cef6ac120e314b85929bd005e2e376c44a445
SHA512 d29218f01bafd90fc2d4ed504622eb5751785d0ec70629b3e0cce17b1c67ad3b3468b6e9edec1ec20a19e58a670295bced7b9aabb0dff835062a0af6ad74d2d5

memory/4932-11-0x0000000010000000-0x000000001019F000-memory.dmp

memory/8-17-0x0000000010000000-0x000000001019F000-memory.dmp