Malware Analysis Report

2024-09-22 14:48

Sample ID 240618-j45sqayern
Target 14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054
SHA256 14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054
Tags
gh0strat purplefox persistence rat rootkit trojan upx
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

14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054

Threat Level: Known bad

The file 14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan upx

PurpleFox

Gh0st RAT payload

Gh0strat

Detect PurpleFox Rootkit

Sets service image path in registry

Drops file in Drivers directory

UPX packed file

Executes dropped EXE

Drops file in System32 directory

Unsigned PE

Runs ping.exe

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: LoadsDriver

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-18 08:14

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-18 08:14

Reported

2024-06-18 08:16

Platform

win10v2004-20240508-en

Max time kernel

150s

Max time network

130s

Command Line

"C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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\mscorsvww.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\mscorsvww.exe N/A

Executes dropped EXE

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

UPX packed file

upx
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mscorsvww.exe C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe N/A
File opened for modification C:\Windows\SysWOW64\mscorsvww.exe C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.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\mscorsvww.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe

"C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe"

C:\Windows\SysWOW64\mscorsvww.exe

C:\Windows\SysWOW64\mscorsvww.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\14F381~1.EXE > nul

C:\Windows\SysWOW64\mscorsvww.exe

C:\Windows\SysWOW64\mscorsvww.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 gwyk.sp168.tv udp
US 8.8.8.8:53 gwyk.sp168.tv udp
US 8.8.8.8:53 gwyk.sp168.tv udp

Files

memory/2372-2-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2372-3-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2372-0-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2372-6-0x0000000010000000-0x00000000101A5000-memory.dmp

C:\Windows\SysWOW64\mscorsvww.exe

MD5 c51e84d4d53678605a1cb5feb6436c84
SHA1 c5b5bbc10b0901923bf13690d9e575b41d86ac59
SHA256 14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054
SHA512 022d9ad8b1879ae110b8bb3ca6cde27d479ede1ff591f9ce8faea583e44e3d228f3f53558f68427be838a87a02a661227dd6290e35b6734411eeb6f14ea306f6

memory/1404-11-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1404-9-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1404-12-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1404-14-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-17-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-18-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-19-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-16-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-20-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-24-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/2876-25-0x0000000010000000-0x00000000101A5000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 08:14

Reported

2024-06-18 08:16

Platform

win11-20240508-en

Max time kernel

150s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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\mscorsvww.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\mscorsvww.exe N/A

Executes dropped EXE

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

UPX packed file

upx
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
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\mscorsvww.exe C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe N/A
File opened for modification C:\Windows\SysWOW64\mscorsvww.exe C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.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\mscorsvww.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\mscorsvww.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\mscorsvww.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe

"C:\Users\Admin\AppData\Local\Temp\14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054.exe"

C:\Windows\SysWOW64\mscorsvww.exe

C:\Windows\SysWOW64\mscorsvww.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\14F381~1.EXE > nul

C:\Windows\SysWOW64\mscorsvww.exe

C:\Windows\SysWOW64\mscorsvww.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 gwyk.sp168.tv udp
HK 156.241.4.189:10092 gwyk.sp168.tv tcp
HK 156.241.4.189:10092 gwyk.sp168.tv tcp
HK 156.241.4.189:10092 gwyk.sp168.tv tcp
US 52.111.227.11:443 tcp
HK 156.241.4.189:10092 gwyk.sp168.tv tcp
HK 156.241.4.189:10092 gwyk.sp168.tv tcp

Files

memory/3532-0-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3532-2-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3532-3-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/3532-6-0x0000000010000000-0x00000000101A5000-memory.dmp

C:\Windows\SysWOW64\mscorsvww.exe

MD5 c51e84d4d53678605a1cb5feb6436c84
SHA1 c5b5bbc10b0901923bf13690d9e575b41d86ac59
SHA256 14f381c0d75d7477de4bc89012f6916dcf1d373c4ebb23684baa73ddd3bef054
SHA512 022d9ad8b1879ae110b8bb3ca6cde27d479ede1ff591f9ce8faea583e44e3d228f3f53558f68427be838a87a02a661227dd6290e35b6734411eeb6f14ea306f6

memory/1880-11-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1880-12-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1880-13-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1880-15-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/1880-9-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-16-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-19-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-20-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-18-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-21-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-24-0x0000000010000000-0x00000000101A5000-memory.dmp

memory/4784-26-0x0000000010000000-0x00000000101A5000-memory.dmp