Malware Analysis Report

2025-08-10 17:53

Sample ID 230823-aqwhfsaa6v
Target 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
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

3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2

Threat Level: Known bad

The file 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

Gh0st RAT payload

Detect PurpleFox Rootkit

Gh0strat

PurpleFox

Drops file in Drivers directory

Sets service image path in registry

Loads dropped DLL

Executes dropped EXE

Deletes itself

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

2023-08-23 00:25

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2023-08-23 00:25

Reported

2023-08-23 00:28

Platform

win7-20230712-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 2484 wrote to memory of 2856 N/A C:\Windows\SysWOW64\Vwopq.exe C:\Windows\SysWOW64\Vwopq.exe
PID 1912 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe C:\Windows\SysWOW64\cmd.exe
PID 1912 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe C:\Windows\SysWOW64\cmd.exe
PID 1912 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe C:\Windows\SysWOW64\cmd.exe
PID 1912 wrote to memory of 3068 N/A C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe C:\Windows\SysWOW64\cmd.exe
PID 3068 wrote to memory of 2296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3068 wrote to memory of 2296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3068 wrote to memory of 2296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 3068 wrote to memory of 2296 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe

"C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3CA2D0~1.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 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp

Files

memory/1912-54-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1912-56-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1912-57-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

memory/2484-63-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

memory/1912-70-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2484-72-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2856-75-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2856-77-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/2856-80-0x0000000010000000-0x00000000101BA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2023-08-23 00:25

Reported

2023-08-23 00:28

Platform

win10v2004-20230703-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe N/A
File opened for modification C:\Windows\SysWOW64\Vwopq.exe C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.exe

"C:\Users\Admin\AppData\Local\Temp\3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2.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\3CA2D0~1.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 8.8.8.8:53 146.78.124.51.in-addr.arpa udp
US 8.8.8.8:53 1.208.79.178.in-addr.arpa udp
CN 101.35.124.74:555 tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
CN 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp
US 8.8.8.8:53 64.13.109.52.in-addr.arpa udp
CN 101.35.124.74:555 tcp
CN 101.35.124.74:555 tcp

Files

memory/3560-133-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/3560-135-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/3560-136-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/3560-137-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

C:\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

memory/1924-142-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1924-145-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1924-146-0x0000000010000000-0x00000000101BA000-memory.dmp

C:\Windows\SysWOW64\Vwopq.exe

MD5 98e51572f099423a5625e810d4bb37c9
SHA1 53415940a292d1307bc644e7baac9b0b3f91bb03
SHA256 3ca2d0b76a8e9091cfdb013333f1297370c36f1c6a2ab17f7915b4dfe47b7de2
SHA512 69f94de94132fa2f5c809470001f8097e89eaa1f05774a26358567e32dcce833e8ddfc62b3157b0f4dc5e826406cc9effd0fa1287844f619b47a83624cb9e8f3

memory/3560-149-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/1924-151-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4584-154-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4584-157-0x0000000010000000-0x00000000101BA000-memory.dmp

memory/4584-159-0x0000000010000000-0x00000000101BA000-memory.dmp