Malware Analysis Report

2024-11-30 15:07

Sample ID 211221-n24j4aebcm
Target 8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin
SHA256 8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d
Tags
evasion persistence trojan phorphiex
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d

Threat Level: Known bad

The file 8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin was found to be: Known bad.

Malicious Activity Summary

evasion persistence trojan phorphiex

Phorphiex Payload

Phorphiex family

Windows security bypass

Windows security modification

Adds Run key to start application

Drops file in Windows directory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2021-12-23 16:11

Signatures

Phorphiex Payload

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

Phorphiex family

phorphiex

Analysis: behavioral2

Detonation Overview

Submitted

2021-12-21 11:54

Reported

2021-12-21 11:57

Platform

win10-en-20211208

Max time kernel

154s

Max time network

162s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe"

Signatures

Windows security bypass

evasion trojan

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiSpywareOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Update Service = "C:\\Windows\\winudsvcs.exe" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Update Service = "C:\\Users\\Admin\\winudsvcs.exe" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\winudsvcs.exe C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
File opened for modification C:\Windows\winudsvcs.exe C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe

"C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe"

Network

Country Destination Domain Proto
US 168.61.215.74:123 time.windows.com udp
IE 52.109.76.32:443 tcp
IE 52.109.76.32:443 tcp
US 8.8.8.8:53 time.windows.com udp
US 8.8.8.8:53 www.update.microsoft.com udp
US 52.137.90.34:80 www.update.microsoft.com tcp
RU 45.182.189.233:48755 tcp
SC 185.215.113.66:48755 udp
RU 45.182.189.233:48755 tcp
RU 45.182.189.233:48755 udp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 tcp
RU 45.182.189.233:48755 tcp
RU 45.182.189.233:48755 tcp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 tcp

Files

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2021-12-21 11:54

Reported

2021-12-21 11:57

Platform

win7-en-20211208

Max time kernel

152s

Max time network

164s

Command Line

"C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe"

Signatures

Windows security bypass

evasion trojan

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiSpywareOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Update Service = "C:\\Windows\\winudsvcs.exe" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\Microsoft Windows Update Service = "C:\\Users\\Admin\\winudsvcs.exe" C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\winudsvcs.exe C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A
File opened for modification C:\Windows\winudsvcs.exe C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe

"C:\Users\Admin\AppData\Local\Temp\8f7bbcb3ac44aa48df92b65b7ef40c341ed80df2710668d5ac6b7207c00b581d.bin.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 www.update.microsoft.com udp
US 52.185.71.28:80 www.update.microsoft.com tcp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 udp
RU 45.182.189.233:48755 udp
RU 45.182.189.233:48755 tcp
RU 45.182.189.233:48755 tcp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 tcp
SC 185.215.113.66:48755 tcp
RU 45.182.189.233:48755 tcp
SC 185.215.113.66:48755 tcp

Files

memory/1860-54-0x0000000075891000-0x0000000075893000-memory.dmp