Malware Analysis Report

2025-08-05 12:42

Sample ID 230829-ybdwvsfc56
Target 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
Tags
gh0strat purplefox persistence rat rootkit trojan upx
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

483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330

Threat Level: Known bad

The file 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

PurpleFox

Detect PurpleFox Rootkit

Gh0st RAT payload

Gh0strat

Drops file in Drivers directory

Sets service image path in registry

Deletes itself

Executes dropped EXE

Loads dropped DLL

UPX packed file

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious behavior: LoadsDriver

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2023-08-29 19:36

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-29 19:36

Reported

2023-08-29 19:39

Platform

win7-20230712-en

Max time kernel

151s

Max time network

128s

Command Line

"C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
Description Indicator Process Target
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Gh0st RAT payload

Description Indicator Process Target
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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

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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 2564 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe C:\Windows\SysWOW64\cmd.exe
PID 2564 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe C:\Windows\SysWOW64\cmd.exe
PID 2564 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe C:\Windows\SysWOW64\cmd.exe
PID 2564 wrote to memory of 1624 N/A C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe C:\Windows\SysWOW64\cmd.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2644 wrote to memory of 2296 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 1624 wrote to memory of 2972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1624 wrote to memory of 2972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1624 wrote to memory of 2972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1624 wrote to memory of 2972 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe

"C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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\483266~1.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
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp
CN 43.143.210.13:8060 tcp

Files

memory/2564-0-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2564-3-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2564-4-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

memory/2644-10-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

memory/2564-17-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2644-20-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2296-22-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2296-26-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2296-27-0x0000000010000000-0x00000000101BA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-29 19:36

Reported

2023-08-29 19:39

Platform

win10v2004-20230703-en

Max time kernel

150s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe"

Signatures

Detect PurpleFox Rootkit

rootkit
Description Indicator Process Target
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Gh0st RAT payload

Description Indicator Process Target
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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

UPX packed file

upx
Description Indicator Process Target
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Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.exe

"C:\Users\Admin\AppData\Local\Temp\483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330.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\483266~1.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 2.136.104.51.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
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 8.8.8.8:53 158.240.127.40.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
CN 43.143.210.13:8060 tcp
US 8.8.8.8:53 122.10.44.20.in-addr.arpa udp

Files

memory/4460-0-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4460-2-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4460-3-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4460-4-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

memory/312-9-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/312-11-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/312-13-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/312-12-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 e03a63cf01ba48e515482b7c62d6c852
SHA1 072f562e1e908110a6c279dd5ee85235830f594b
SHA256 483266f08058e3374697876161aaaeb5281615c8a48d2594991e64be402b5330
SHA512 13a5f70bd0b6b01e52c8f5a286018f998eccb0db3a3b6d9b1ab775b6ffe44a7da6647e4251965c64c36f8e2e6ad364d548c2d2848e2cd2acf43e7acb79e3abce

memory/4460-14-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/312-17-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2516-21-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2516-20-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2516-22-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2516-24-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2516-27-0x0000000010000000-0x00000000101BA000-memory.dmp