Malware Analysis Report

2024-12-07 13:57

Sample ID 241118-rpl13aybjc
Target 03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe
SHA256 03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7
Tags
gh0strat purplefox discovery persistence rat rootkit trojan
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

03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7

Threat Level: Known bad

The file 03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox discovery persistence rat rootkit trojan

PurpleFox

Gh0st RAT payload

Detect PurpleFox Rootkit

Gh0strat

Purplefox family

Gh0strat family

Sets service image path in registry

Drops file in Drivers directory

Loads dropped DLL

Executes dropped EXE

Deletes itself

Drops file in System32 directory

Unsigned PE

System Network Configuration Discovery: Internet Connection Discovery

System Location Discovery: System Language Discovery

Runs ping.exe

Suspicious behavior: LoadsDriver

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-18 14:22

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-18 14:22

Reported

2024-11-18 14:24

Platform

win7-20240903-en

Max time kernel

97s

Max time network

111s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.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

Gh0strat family

gh0strat

PurpleFox

rootkit trojan purplefox

Purplefox family

purplefox

Drops file in Drivers directory

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

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File opened for modification C:\Windows\SysWOW64\Gwogw.exe C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A
File created C:\Windows\SysWOW64\Gwogw.exe C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Gwogw.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Gwogw.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.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\Gwogw.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Gwogw.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Gwogw.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Gwogw.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1940 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe C:\Windows\SysWOW64\cmd.exe
PID 1940 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe C:\Windows\SysWOW64\cmd.exe
PID 1940 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe C:\Windows\SysWOW64\cmd.exe
PID 1940 wrote to memory of 1760 N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe C:\Windows\SysWOW64\cmd.exe
PID 2624 wrote to memory of 2356 N/A C:\Windows\SysWOW64\Gwogw.exe C:\Windows\SysWOW64\Gwogw.exe
PID 2624 wrote to memory of 2356 N/A C:\Windows\SysWOW64\Gwogw.exe C:\Windows\SysWOW64\Gwogw.exe
PID 2624 wrote to memory of 2356 N/A C:\Windows\SysWOW64\Gwogw.exe C:\Windows\SysWOW64\Gwogw.exe
PID 2624 wrote to memory of 2356 N/A C:\Windows\SysWOW64\Gwogw.exe C:\Windows\SysWOW64\Gwogw.exe
PID 1760 wrote to memory of 2820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1760 wrote to memory of 2820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1760 wrote to memory of 2820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 1760 wrote to memory of 2820 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe

"C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe"

C:\Windows\SysWOW64\Gwogw.exe

C:\Windows\SysWOW64\Gwogw.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\03C9E3~1.EXE > nul

C:\Windows\SysWOW64\Gwogw.exe

C:\Windows\SysWOW64\Gwogw.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 facai7777777.ydns.eu udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp

Files

memory/1940-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Gwogw.exe

MD5 5634ff19a99f4a5185ce48490ef679ad
SHA1 856fe34eac3f64d2bde77fa4b2e451dda249f8f3
SHA256 03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7
SHA512 45f536e394b3f45cf88646c9119b0a470d4297c8149b3a55cf19bdc5d393d378e380920c98814905bf9a5cb5ce18a2e03aad7214f0a54367d3939c8bf4504bf0

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-18 14:22

Reported

2024-11-18 14:24

Platform

win10v2004-20241007-en

Max time kernel

97s

Max time network

118s

Command Line

"C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.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

Gh0strat family

gh0strat

PurpleFox

rootkit trojan purplefox

Purplefox family

purplefox

Drops file in Drivers directory

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

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Gwogw.exe C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A
File opened for modification C:\Windows\SysWOW64\Gwogw.exe C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Gwogw.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\Gwogw.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\cmd.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\PING.EXE N/A

System Network Configuration Discovery: Internet Connection Discovery

discovery
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\PING.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\Gwogw.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Gwogw.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Gwogw.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Gwogw.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe

"C:\Users\Admin\AppData\Local\Temp\03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7.exe"

C:\Windows\SysWOW64\Gwogw.exe

C:\Windows\SysWOW64\Gwogw.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\03C9E3~1.EXE > nul

C:\Windows\SysWOW64\Gwogw.exe

C:\Windows\SysWOW64\Gwogw.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 58.55.71.13.in-addr.arpa udp
US 8.8.8.8:53 facai7777777.ydns.eu udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
US 8.8.8.8:53 197.87.175.4.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp
HK 202.181.25.108:8089 facai7777777.ydns.eu tcp

Files

memory/4708-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Gwogw.exe

MD5 5634ff19a99f4a5185ce48490ef679ad
SHA1 856fe34eac3f64d2bde77fa4b2e451dda249f8f3
SHA256 03c9e349282c833d3f60028dcace5f8f85655d73fc5d491d5dd6474aec71f7c7
SHA512 45f536e394b3f45cf88646c9119b0a470d4297c8149b3a55cf19bdc5d393d378e380920c98814905bf9a5cb5ce18a2e03aad7214f0a54367d3939c8bf4504bf0

memory/4300-10-0x0000000010000000-0x000000001019F000-memory.dmp

memory/3180-18-0x0000000010000000-0x000000001019F000-memory.dmp