Malware Analysis Report

2024-09-22 14:59

Sample ID 240616-mbyqgstbqj
Target add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802
SHA256 add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802
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

add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802

Threat Level: Known bad

The file add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802 was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox persistence rat rootkit trojan

PurpleFox

Detect PurpleFox Rootkit

Gh0st RAT payload

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 behavior: LoadsDriver

Suspicious use of WriteProcessMemory

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-16 10:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-16 10:18

Reported

2024-06-16 10:20

Platform

win7-20240221-en

Max time kernel

145s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.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\Jbcdt.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\Jbcdt.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\Jbcdt.exe N/A
N/A N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Loads dropped DLL

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe N/A
File opened for modification C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.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\Jbcdt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1848 wrote to memory of 2556 N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe C:\Windows\SysWOW64\cmd.exe
PID 1848 wrote to memory of 2556 N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe C:\Windows\SysWOW64\cmd.exe
PID 1848 wrote to memory of 2556 N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe C:\Windows\SysWOW64\cmd.exe
PID 1848 wrote to memory of 2556 N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe C:\Windows\SysWOW64\cmd.exe
PID 3024 wrote to memory of 2612 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 3024 wrote to memory of 2612 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 3024 wrote to memory of 2612 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 3024 wrote to memory of 2612 N/A C:\Windows\SysWOW64\Jbcdt.exe C:\Windows\SysWOW64\Jbcdt.exe
PID 2556 wrote to memory of 2628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2556 wrote to memory of 2628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2556 wrote to memory of 2628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2556 wrote to memory of 2628 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE

Processes

C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe

"C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe"

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.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\ADD2FD~1.EXE > nul

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.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 qwe6368.e1.luyouxia.net udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp

Files

memory/1848-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 e0ef0e74cf4f59510ad21be62cf24c1a
SHA1 f7eb3f23d8b3345f496a9a159feabab7e1413672
SHA256 add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802
SHA512 b19717ff1ef3094d2402da6f8457a7c823929cc30fcdbb43ed9c73d1ec321e55df7dc16b52c4ec953ffe6b777a1dfba4e5cbee72a11db08f5055f0a3403dafc1

memory/2612-19-0x0000000010000000-0x000000001019F000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-16 10:18

Reported

2024-06-16 10:20

Platform

win10v2004-20240226-en

Max time kernel

141s

Max time network

152s

Command Line

"C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.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\Jbcdt.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\Jbcdt.exe N/A

Executes dropped EXE

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

Drops file in System32 directory

Description Indicator Process Target
File created C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe N/A
File opened for modification C:\Windows\SysWOW64\Jbcdt.exe C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.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\Jbcdt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeIncBasePriorityPrivilege N/A C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe N/A
Token: SeLoadDriverPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: 33 N/A C:\Windows\SysWOW64\Jbcdt.exe N/A
Token: SeIncBasePriorityPrivilege N/A C:\Windows\SysWOW64\Jbcdt.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe

"C:\Users\Admin\AppData\Local\Temp\add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802.exe"

C:\Windows\SysWOW64\Jbcdt.exe

C:\Windows\SysWOW64\Jbcdt.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\ADD2FD~1.EXE > nul

C:\Windows\SysWOW64\Jbcdt.exe

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

C:\Windows\SysWOW64\PING.EXE

ping -n 2 127.0.0.1

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe

"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3608 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:8

Network

Country Destination Domain Proto
GB 96.16.110.114:80 tcp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 qwe6368.e1.luyouxia.net udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 8.8.8.8:53 73.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 164.189.21.2.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 13.107.253.64:443 tcp
US 8.8.8.8:53 32.251.17.2.in-addr.arpa udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp
US 8.8.8.8:53 144.107.17.2.in-addr.arpa udp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
US 8.8.8.8:53 chromewebstore.googleapis.com udp
GB 172.217.169.42:443 chromewebstore.googleapis.com tcp
CN 123.99.198.201:2319 qwe6368.e1.luyouxia.net tcp
US 8.8.8.8:53 18.173.189.20.in-addr.arpa udp

Files

memory/1972-0-0x0000000010000000-0x000000001019F000-memory.dmp

C:\Windows\SysWOW64\Jbcdt.exe

MD5 e0ef0e74cf4f59510ad21be62cf24c1a
SHA1 f7eb3f23d8b3345f496a9a159feabab7e1413672
SHA256 add2fdc5d0f012da59521fcc62e4137f74d7e9a5d041adee423b638c36ff2802
SHA512 b19717ff1ef3094d2402da6f8457a7c823929cc30fcdbb43ed9c73d1ec321e55df7dc16b52c4ec953ffe6b777a1dfba4e5cbee72a11db08f5055f0a3403dafc1

memory/1080-11-0x0000000010000000-0x000000001019F000-memory.dmp