Malware Analysis Report

2024-12-07 13:05

Sample ID 241109-wbhtpsygrl
Target baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN
SHA256 baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bb
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

baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bb

Threat Level: Known bad

The file baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN was found to be: Known bad.

Malicious Activity Summary

gh0strat purplefox discovery persistence rat rootkit trojan

Gh0strat family

Purplefox family

Detect PurpleFox Rootkit

Gh0st RAT payload

Gh0strat

PurpleFox

Blocklisted process makes network request

Adds Run key to start application

Unsigned PE

System Location Discovery: System Language Discovery

Program crash

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 17:44

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 17:44

Reported

2024-11-09 17:46

Platform

win7-20241010-en

Max time kernel

78s

Max time network

19s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

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

Gh0strat family

gh0strat

PurpleFox

rootkit trojan purplefox

Purplefox family

purplefox

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Windows\\SysWOW64\\rundll32.exe" C:\Windows\SysWOW64\rundll32.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\rundll32.exe N/A

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

Network

N/A

Files

memory/2508-0-0x0000000077A00000-0x0000000077AD6000-memory.dmp

memory/2508-1-0x0000000010000000-0x00000000101A4000-memory.dmp

memory/2508-13-0x0000000010000000-0x00000000101A4000-memory.dmp

memory/2508-12-0x0000000010000000-0x00000000101A4000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 17:44

Reported

2024-11-09 17:46

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

98s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

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

Blocklisted process makes network request

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\rundll32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Windows\\SysWOW64\\rundll32.exe" C:\Windows\SysWOW64\rundll32.exe N/A

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\rundll32.exe

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWOW64\rundll32.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1420 wrote to memory of 4420 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1420 wrote to memory of 4420 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1420 wrote to memory of 4420 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe

Processes

C:\Windows\system32\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\baf2e512ccbb9ea27627e8726afe7aaa34e19a0055326bc1b57a0ac56212c9bbN.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4420 -ip 4420

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 4420 -s 728

Network

Country Destination Domain Proto
US 8.8.8.8:53 58.55.71.13.in-addr.arpa udp
HK 103.97.229.54:610 tcp
US 8.8.8.8:53 0.205.248.87.in-addr.arpa udp
US 8.8.8.8:53 2.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 83.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 31.243.111.52.in-addr.arpa udp

Files

memory/4420-0-0x0000000077491000-0x00000000775B1000-memory.dmp

memory/4420-1-0x0000000010000000-0x00000000101A4000-memory.dmp