Malware Analysis Report

2024-09-22 14:50

Sample ID 240619-lf5txssdnq
Target 7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d
SHA256 7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d
Tags
gh0strat purplefox persistence rat rootkit trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d

Threat Level: Known bad

The file 7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan

Gh0st RAT payload

PurpleFox

Detect PurpleFox Rootkit

Gh0strat

Drops file in Drivers directory

Sets service image path in registry

Executes dropped EXE

Loads dropped DLL

Deletes itself

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Runs ping.exe

Suspicious behavior: LoadsDriver

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-19 09:29

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 09:29

Reported

2024-06-19 09:32

Platform

win7-20240221-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe"

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

Drops file in Drivers directory

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

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe N/A
File opened for modification C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.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\Wxypq.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1924 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe C:\Windows\SysWOW64\cmd.exe
PID 1924 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe C:\Windows\SysWOW64\cmd.exe
PID 1924 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe C:\Windows\SysWOW64\cmd.exe
PID 1924 wrote to memory of 2960 N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe C:\Windows\SysWOW64\cmd.exe
PID 2756 wrote to memory of 2564 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2756 wrote to memory of 2564 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2756 wrote to memory of 2564 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2756 wrote to memory of 2564 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2960 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2960 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2960 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2960 wrote to memory of 2540 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe

"C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe"

C:\Windows\SysWOW64\Wxypq.exe

C:\Windows\SysWOW64\Wxypq.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\7FCB52~1.EXE > nul

C:\Windows\SysWOW64\Wxypq.exe

C:\Windows\SysWOW64\Wxypq.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 xisafjasfjip.u1.luyouxia.net udp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp
CN 123.99.198.201:50349 xisafjasfjip.u1.luyouxia.net tcp

Files

memory/1924-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Wxypq.exe

MD5 54ab09bc389b92bb8c1457744319b04a
SHA1 684b749a7121e2253ec5900f1b8af3832864e19c
SHA256 7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d
SHA512 eb8f5e9ce1e40a8d39da18b8414d68303072e5434b9cab98f271c750f67d672ff7df5ffb75e8e830da4931b5f7feb1ce5ea6a527fbe1602afd87162e72d7aad2

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 09:29

Reported

2024-06-19 09:32

Platform

win10v2004-20240508-en

Max time kernel

142s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.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\Wxypq.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\Wxypq.exe N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe N/A
File opened for modification C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.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\Wxypq.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Wxypq.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Wxypq.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe

"C:\Users\Admin\AppData\Local\Temp\7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d.exe"

C:\Windows\SysWOW64\Wxypq.exe

C:\Windows\SysWOW64\Wxypq.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\7FCB52~1.EXE > nul

C:\Windows\SysWOW64\Wxypq.exe

C:\Windows\SysWOW64\Wxypq.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 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp
US 8.8.8.8:53 xisafjasfjip.u1.luyouxia.net udp

Files

memory/3664-1-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Wxypq.exe

MD5 54ab09bc389b92bb8c1457744319b04a
SHA1 684b749a7121e2253ec5900f1b8af3832864e19c
SHA256 7fcb52d0f73b19fc95b1856728a6cafa62274c2c279fddeefeed4db3b9d3dc3d
SHA512 eb8f5e9ce1e40a8d39da18b8414d68303072e5434b9cab98f271c750f67d672ff7df5ffb75e8e830da4931b5f7feb1ce5ea6a527fbe1602afd87162e72d7aad2

memory/2868-10-0x0000000010000000-0x000000001019F000-memory.dmp