Malware Analysis Report

2024-09-22 15:22

Sample ID 240601-ml4pgsah97
Target 389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1
SHA256 389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1
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

389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1

Threat Level: Known bad

The file 389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan

Gh0strat

PurpleFox

Gh0st RAT payload

Detect PurpleFox Rootkit

Sets service image path in registry

Drops file in Drivers directory

Executes dropped EXE

Loads dropped DLL

Deletes itself

Drops file in System32 directory

Unsigned PE

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Suspicious behavior: LoadsDriver

Runs ping.exe

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-01 10:34

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-01 10:34

Reported

2024-06-01 10:36

Platform

win7-20240508-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.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\sainbox.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\sainbox.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\sainbox.exe N/A
N/A N/A C:\Windows\SysWOW64\sainbox.exe N/A

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\sainbox.exe C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe N/A
File opened for modification C:\Windows\SysWOW64\sainbox.exe C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.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\sainbox.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2008 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe C:\Windows\SysWOW64\cmd.exe
PID 2008 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe C:\Windows\SysWOW64\cmd.exe
PID 2008 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe C:\Windows\SysWOW64\cmd.exe
PID 2008 wrote to memory of 2680 N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe C:\Windows\SysWOW64\cmd.exe
PID 1272 wrote to memory of 2700 N/A C:\Windows\SysWOW64\sainbox.exe C:\Windows\SysWOW64\sainbox.exe
PID 1272 wrote to memory of 2700 N/A C:\Windows\SysWOW64\sainbox.exe C:\Windows\SysWOW64\sainbox.exe
PID 1272 wrote to memory of 2700 N/A C:\Windows\SysWOW64\sainbox.exe C:\Windows\SysWOW64\sainbox.exe
PID 1272 wrote to memory of 2700 N/A C:\Windows\SysWOW64\sainbox.exe C:\Windows\SysWOW64\sainbox.exe
PID 2680 wrote to memory of 2648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2680 wrote to memory of 2648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2680 wrote to memory of 2648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2680 wrote to memory of 2648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe

"C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe"

C:\Windows\SysWOW64\sainbox.exe

C:\Windows\SysWOW64\sainbox.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\389FCE~1.EXE > nul

C:\Windows\SysWOW64\sainbox.exe

C:\Windows\SysWOW64\sainbox.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 lincan1227.b1.luyouxia.net udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp

Files

memory/2008-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\sainbox.exe

MD5 7c2f7f2fa3082667282a1545397ed761
SHA1 81e744fc1c0757b6e53b3c9535565144612d6a9b
SHA256 389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1
SHA512 24fa3a9d732d1e53ac2be5e9b4c34a4c9a0fee969d37ee737d0155a9dbfaae8ed88dd79a5abbc7ad5ef9ada1ce5e689088c312e0da8a6b01a93437802e875a09

memory/2700-18-0x0000000010000000-0x000000001019F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-01 10:34

Reported

2024-06-01 10:36

Platform

win10v2004-20240508-en

Max time kernel

145s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.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\sainbox.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\sainbox.exe N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\sainbox.exe C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe N/A
File created C:\Windows\SysWOW64\sainbox.exe C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.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\sainbox.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\sainbox.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\sainbox.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe

"C:\Users\Admin\AppData\Local\Temp\389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1.exe"

C:\Windows\SysWOW64\sainbox.exe

C:\Windows\SysWOW64\sainbox.exe -auto

C:\Windows\SysWOW64\sainbox.exe

C:\Windows\SysWOW64\sainbox.exe -acsi

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\389FCE~1.EXE > nul

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 97.17.167.52.in-addr.arpa udp
US 8.8.8.8:53 lincan1227.b1.luyouxia.net udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
US 8.8.8.8:53 25.140.123.92.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
NL 23.62.61.97:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 97.61.62.23.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
US 8.8.8.8:53 0.204.248.87.in-addr.arpa udp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp
CN 123.99.198.201:40010 lincan1227.b1.luyouxia.net tcp

Files

memory/760-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\sainbox.exe

MD5 7c2f7f2fa3082667282a1545397ed761
SHA1 81e744fc1c0757b6e53b3c9535565144612d6a9b
SHA256 389fcefd5ec9ac7266838c79070efd3ddfcbb6119f5727c31338b5d117b8bdf1
SHA512 24fa3a9d732d1e53ac2be5e9b4c34a4c9a0fee969d37ee737d0155a9dbfaae8ed88dd79a5abbc7ad5ef9ada1ce5e689088c312e0da8a6b01a93437802e875a09

memory/4940-10-0x0000000010000000-0x000000001019F000-memory.dmp

memory/4928-17-0x0000000010000000-0x000000001019F000-memory.dmp