Malware Analysis Report

2025-05-05 21:49

Sample ID 250415-fsbtqaykx3
Target 2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader
SHA256 7d1be998be471dfc616ad3b94f1871e955c3b501b581779a989ff4e11328740a
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

7d1be998be471dfc616ad3b94f1871e955c3b501b581779a989ff4e11328740a

Threat Level: Known bad

The file 2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader was found to be: Known bad.

Malicious Activity Summary

phorphiex discovery loader persistence trojan worm

Phorphiex payload

Phorphiex, Phorpiex

Phorphiex family

Downloads MZ/PE file

Executes dropped EXE

Adds Run key to start application

Drops file in Windows directory

System Location Discovery: System Language Discovery

Unsigned PE

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2025-04-15 05:07

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2025-04-15 05:07

Reported

2025-04-15 05:10

Platform

win10v2004-20250410-en

Max time kernel

148s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_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\803C.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\310237346.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\310237346.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File created C:\Windows\sysldrvsn.exe C:\Users\Admin\AppData\Local\Temp\310237346.exe N/A
File opened for modification C:\Windows\sysldrvsn.exe C:\Users\Admin\AppData\Local\Temp\310237346.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\310237346.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\sysldrvsn.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe N/A
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\803C.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4376 wrote to memory of 4764 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\803C.exe
PID 4376 wrote to memory of 4764 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\803C.exe
PID 4376 wrote to memory of 4764 N/A C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe C:\Users\Admin\AppData\Local\Temp\803C.exe
PID 4764 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\803C.exe C:\Users\Admin\AppData\Local\Temp\310237346.exe
PID 4764 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\803C.exe C:\Users\Admin\AppData\Local\Temp\310237346.exe
PID 4764 wrote to memory of 5008 N/A C:\Users\Admin\AppData\Local\Temp\803C.exe C:\Users\Admin\AppData\Local\Temp\310237346.exe
PID 5008 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\310237346.exe C:\Windows\sysldrvsn.exe
PID 5008 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\310237346.exe C:\Windows\sysldrvsn.exe
PID 5008 wrote to memory of 2444 N/A C:\Users\Admin\AppData\Local\Temp\310237346.exe C:\Windows\sysldrvsn.exe
PID 5820 wrote to memory of 4868 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe
PID 5820 wrote to memory of 4868 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe
PID 5820 wrote to memory of 4868 N/A C:\Windows\system32\cmd.exe C:\Windows\sysldrvsn.exe

Processes

C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe

"C:\Users\Admin\AppData\Local\Temp\2025-04-15_8f75724c86fc41118a54cf0829d075dc_amadey_elex_karagany_rhadamanthys_smoke-loader.exe"

C:\Users\Admin\AppData\Local\Temp\803C.exe

"C:\Users\Admin\AppData\Local\Temp\803C.exe"

C:\Users\Admin\AppData\Local\Temp\310237346.exe

C:\Users\Admin\AppData\Local\Temp\310237346.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
GB 88.221.135.26:443 www.bing.com 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
US 8.8.8.8:53 c.pki.goog udp
GB 142.250.180.3:80 c.pki.goog tcp
RU 185.39.17.124:80 tcp
US 8.8.8.8:53 www.update.microsoft.com udp
US 20.72.235.82:80 www.update.microsoft.com tcp
UZ 87.237.238.58:40500 udp
UZ 90.156.164.104:40500 tcp
CN 113.118.42.68:40500 udp
IR 151.238.206.66:40500 udp
KZ 37.150.126.106:40500 udp
RU 185.39.17.124:80 tcp
IR 2.184.181.183:40500 udp
TJ 85.9.133.202:40500 udp
IR 2.190.74.156:40500 tcp
IR 2.180.49.101:40500 udp
RU 92.125.151.204:40500 udp
RU 185.39.17.124:80 tcp
RU 5.142.193.240:40500 udp
TJ 185.177.0.183:40500 udp
UZ 90.156.164.174:40500 udp
KZ 92.46.228.74:40500 tcp
UZ 90.156.164.184:40500 udp
RU 78.36.17.105:40500 udp
RU 185.39.17.124:80 tcp
KZ 84.240.235.134:40500 udp
UA 188.191.70.5:40500 udp
KZ 95.59.168.51:40500 udp
IR 5.236.54.150:40500 tcp

Files

C:\Users\Admin\AppData\Local\Temp\803C.exe

MD5 21789ebcbfca1eb0c6881e6af6216a81
SHA1 30152ddbe1150a2a612eb7b08e6551830276c8f0
SHA256 c0d12405d2a5cd6064e6e498d6f5f7fd48c72b2d02f171f20f898a4d2832968c
SHA512 cf3296247865130e4e769f09280d5f15237bedf474734f7b383130dfd01c5407a081e3f571152c393845b08d8ed48a0b2d23d11e905783332fb2552d20ad4514

C:\Users\Admin\AppData\Local\Temp\310237346.exe

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