Malware Analysis Report

2025-05-05 21:49

Sample ID 250415-fyxclssxfs
Target 2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader
SHA256 6ab6f1c0991cd2bde87e0e8936fcd0fd789d24e6b584fb2a81d6220bd56d230a
Tags
phorphiex discovery loader persistence trojan worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V16

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

6ab6f1c0991cd2bde87e0e8936fcd0fd789d24e6b584fb2a81d6220bd56d230a

Threat Level: Known bad

The file 2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader was found to be: Known bad.

Malicious Activity Summary

phorphiex discovery loader persistence trojan worm

Phorphiex family

Phorphiex, Phorpiex

Phorphiex payload

Downloads MZ/PE file

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-04-15 05:17

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2025-04-15 05:17

Reported

2025-04-15 05:20

Platform

win10v2004-20250314-en

Max time kernel

148s

Max time network

156s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe"

Signatures

Phorphiex family

phorphiex

Phorphiex payload

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

Phorphiex, Phorpiex

worm trojan loader phorphiex

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\8DF8.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\2180318982.exe N/A
N/A N/A C:\Windows\sysldrvsn.exe N/A
N/A N/A C:\Windows\sysldrvsn.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\Windows Settings = "C:\\Windows\\sysldrvsn.exe" C:\Users\Admin\AppData\Local\Temp\2180318982.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\sysldrvsn.exe C:\Users\Admin\AppData\Local\Temp\2180318982.exe N/A
File opened for modification C:\Windows\sysldrvsn.exe C:\Users\Admin\AppData\Local\Temp\2180318982.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\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\8DF8.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2180318982.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\sysldrvsn.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3164 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\8DF8.exe
PID 3164 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\8DF8.exe
PID 3164 wrote to memory of 320 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\8DF8.exe
PID 320 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\8DF8.exe C:\Users\Admin\AppData\Local\Temp\2180318982.exe
PID 320 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\8DF8.exe C:\Users\Admin\AppData\Local\Temp\2180318982.exe
PID 320 wrote to memory of 4284 N/A C:\Users\Admin\AppData\Local\Temp\8DF8.exe C:\Users\Admin\AppData\Local\Temp\2180318982.exe
PID 4284 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\2180318982.exe C:\Windows\sysldrvsn.exe
PID 4284 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\2180318982.exe C:\Windows\sysldrvsn.exe
PID 4284 wrote to memory of 4364 N/A C:\Users\Admin\AppData\Local\Temp\2180318982.exe C:\Windows\sysldrvsn.exe
PID 4192 wrote to memory of 3788 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe
PID 4192 wrote to memory of 3788 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe
PID 4192 wrote to memory of 3788 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe

"C:\Users\Admin\AppData\Local\Temp\2025-04-15_ca3188c9d42bf5454c04eddc87aee031_amadey_elex_rhadamanthys_smoke-loader.exe"

C:\Users\Admin\AppData\Local\Temp\8DF8.exe

"C:\Users\Admin\AppData\Local\Temp\8DF8.exe"

C:\Users\Admin\AppData\Local\Temp\2180318982.exe

C:\Users\Admin\AppData\Local\Temp\2180318982.exe

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c C:\Windows\sysldrvsn.exe

C:\Windows\sysldrvsn.exe

C:\Windows\sysldrvsn.exe

C:\Windows\sysldrvsn.exe

C:\Windows\sysldrvsn.exe

Network

Country Destination Domain Proto
RU 185.215.113.66:80 185.215.113.66 tcp
US 8.8.8.8:53 twizt.net udp
RU 185.215.113.66:80 twizt.net tcp
RU 185.215.113.66:80 twizt.net tcp
RU 185.39.17.124:80 tcp
RU 185.39.17.124:80 tcp
US 8.8.8.8:53 www.update.microsoft.com udp
US 20.109.209.108:80 www.update.microsoft.com tcp
UZ 217.30.162.161:40500 udp
UZ 90.156.164.91:40500 tcp
UZ 213.230.127.60:40500 udp
UZ 83.222.6.233:40500 udp
UZ 90.156.161.119:40500 udp
RU 185.39.17.124:80 tcp
UZ 90.156.167.250:40500 udp
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.180.3:80 c.pki.goog tcp
UZ 90.156.161.103:40500 udp
IR 84.241.34.246:40500 tcp
UZ 178.218.201.115:40500 udp
KZ 92.47.42.231:40500 tcp
UZ 213.206.63.204:40500 udp
RU 185.39.17.124:80 tcp
TJ 77.244.144.31:40500 udp
RU 95.191.18.91:40500 udp
KZ 95.59.233.206:40500 udp
IR 31.25.129.37:40500 udp
IR 212.120.203.252:40500 tcp
UZ 90.156.165.49:40500 udp
RU 185.39.17.124:80 tcp
YE 82.114.187.76:40500 udp
UZ 90.156.166.239:40500 udp
IR 151.234.31.102:40500 udp

Files

C:\Users\Admin\AppData\Local\Temp\8DF8.exe

MD5 21789ebcbfca1eb0c6881e6af6216a81
SHA1 30152ddbe1150a2a612eb7b08e6551830276c8f0
SHA256 c0d12405d2a5cd6064e6e498d6f5f7fd48c72b2d02f171f20f898a4d2832968c
SHA512 cf3296247865130e4e769f09280d5f15237bedf474734f7b383130dfd01c5407a081e3f571152c393845b08d8ed48a0b2d23d11e905783332fb2552d20ad4514

C:\Users\Admin\AppData\Local\Temp\2180318982.exe

MD5 00306e1e4a4230f9dc6b626a68dcbbb0
SHA1 1d71fc3b6a308396c8f03bdc0ee012b44d7782e9
SHA256 8133c11eeec328b9995eec62438ecd87535d540f320beab4642d032661e448b2
SHA512 6899d3bac0cf0b493e0f4e85700a40f6ebc433c8319f746e803a948fe9715f00682adb09f967e9a02e6e4bffa020083d12192e1e375fa82a4a648ba28b3d6af9