Malware Analysis Report

2024-12-07 13:43

Sample ID 241109-fsn42s1lgm
Target 9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179
SHA256 9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179
Tags
upx rootkit gh0strat purplefox discovery
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

9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179

Threat Level: Known bad

The file 9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179 was found to be: Known bad.

Malicious Activity Summary

upx rootkit gh0strat purplefox discovery

Gh0st RAT payload

Purplefox family

Detect PurpleFox Rootkit

Gh0strat family

ACProtect 1.3x - 1.4x DLL software

UPX packed file

Unsigned PE

Program crash

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-09 05:08

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 family

gh0strat

Purplefox family

purplefox

ACProtect 1.3x - 1.4x DLL software

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

UPX packed file

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

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-09 05:08

Reported

2024-11-09 05:10

Platform

win7-20240903-en

Max time kernel

117s

Max time network

118s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

Signatures

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 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 1304 wrote to memory of 2532 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\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

Network

N/A

Files

memory/2532-0-0x0000000010000000-0x00000000101B6000-memory.dmp

memory/2532-1-0x0000000010000000-0x00000000101B6000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-09 05:08

Reported

2024-11-09 05:10

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

134s

Command Line

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

Signatures

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A 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 400 wrote to memory of 2108 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 400 wrote to memory of 2108 N/A C:\Windows\system32\rundll32.exe C:\Windows\SysWOW64\rundll32.exe
PID 400 wrote to memory of 2108 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\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

C:\Windows\SysWOW64\rundll32.exe

rundll32.exe C:\Users\Admin\AppData\Local\Temp\9317b4eda1bd8ac0972f24be9cf48485cde7cdd7e67880e5133e1c14ff492179.dll,#1

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2108 -ip 2108

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2108 -s 540

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 68.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 212.20.149.52.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp

Files

memory/2108-0-0x0000000010000000-0x00000000101B6000-memory.dmp