Malware Analysis Report

2024-09-22 14:50

Sample ID 240619-lf5txssdnr
Target 5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c
SHA256 5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c
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

5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c

Threat Level: Known bad

The file 5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan

Detect PurpleFox Rootkit

PurpleFox

Gh0st RAT payload

Gh0strat

Sets service image path in registry

Drops file in Drivers directory

Deletes itself

Loads dropped DLL

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

Suspicious use of WriteProcessMemory

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

win7-20240611-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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

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\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe N/A
File opened for modification C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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 2940 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe C:\Windows\SysWOW64\cmd.exe
PID 2940 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe C:\Windows\SysWOW64\cmd.exe
PID 2940 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe C:\Windows\SysWOW64\cmd.exe
PID 2940 wrote to memory of 2772 N/A C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe C:\Windows\SysWOW64\cmd.exe
PID 2612 wrote to memory of 2628 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2612 wrote to memory of 2628 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2612 wrote to memory of 2628 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2612 wrote to memory of 2628 N/A C:\Windows\SysWOW64\Wxypq.exe C:\Windows\SysWOW64\Wxypq.exe
PID 2772 wrote to memory of 2496 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2772 wrote to memory of 2496 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2772 wrote to memory of 2496 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2772 wrote to memory of 2496 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe

"C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\5CFCD9~1.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
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp

Files

memory/2940-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Wxypq.exe

MD5 7e9e16b05b5aeb2b5575163d46adf167
SHA1 266129dfd4a179bb23333a9440fd90b5df86cf89
SHA256 5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c
SHA512 3a0317c27de9ed9e4943962a1e90d1fb86f3387319a673fe29ce8d8e8d41198154633760920b691f293ced1e599c54b803366e1608a2a839f37347272460c09d

memory/2628-18-0x0000000010000000-0x000000001019F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 09:29

Reported

2024-06-19 09:32

Platform

win10v2004-20240611-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\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\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe N/A
File opened for modification C:\Windows\SysWOW64\Wxypq.exe C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.exe

"C:\Users\Admin\AppData\Local\Temp\5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c.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\5CFCD9~1.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 8.8.8.8.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 5.181.190.20.in-addr.arpa udp
BE 88.221.83.235:443 www.bing.com tcp
BE 88.221.83.235:443 www.bing.com tcp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 235.83.221.88.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
US 8.8.8.8:53 138.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
US 8.8.8.8:53 23.236.111.52.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 150.171.27.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.27.171.150.in-addr.arpa udp
CN 123.99.198.201:50349 tcp
CN 123.99.198.201:50349 tcp

Files

memory/64-1-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Wxypq.exe

MD5 7e9e16b05b5aeb2b5575163d46adf167
SHA1 266129dfd4a179bb23333a9440fd90b5df86cf89
SHA256 5cfcd9198cb275fc9b059b8b68ca3e5f2b41d72556a188bedf458d6c20d2a52c
SHA512 3a0317c27de9ed9e4943962a1e90d1fb86f3387319a673fe29ce8d8e8d41198154633760920b691f293ced1e599c54b803366e1608a2a839f37347272460c09d

memory/768-10-0x0000000010000000-0x000000001019F000-memory.dmp

memory/2752-18-0x0000000010000000-0x000000001019F000-memory.dmp