Malware Analysis Report

2024-11-30 15:08

Sample ID 201105-yhb3bs35rs
Target good
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
Tags
phorphiex evasion loader persistence trojan upx worm
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac

Threat Level: Known bad

The file good was found to be: Known bad.

Malicious Activity Summary

phorphiex evasion loader persistence trojan upx worm

Modifies Windows Defender Real-time Protection settings

Phorphiex Worm

Windows security bypass

Executes dropped EXE

UPX packed file

Loads dropped DLL

Windows security modification

Adds Run key to start application

Drops file in Windows directory

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-11-05 16:33

Signatures

UPX packed file

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

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-05 16:33

Reported

2020-11-05 16:36

Platform

win7v20201028

Max time kernel

151s

Max time network

148s

Command Line

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

Signatures

Modifies Windows Defender Real-time Protection settings

evasion trojan

Phorphiex Worm

worm trojan loader phorphiex

Windows security bypass

evasion trojan

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\3049586940303040\wcfgmgr32.exe N/A

UPX packed file

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

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\good.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\good.exe N/A

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe" C:\Users\Admin\AppData\Local\Temp\good.exe N/A
Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe" C:\Users\Admin\AppData\Local\Temp\good.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\3049586940303040\wcfgmgr32.exe C:\Users\Admin\AppData\Local\Temp\good.exe N/A
File opened for modification C:\Windows\3049586940303040 C:\Users\Admin\AppData\Local\Temp\good.exe N/A
File created C:\Windows\3049586940303040\wcfgmgr32.exe C:\Users\Admin\AppData\Local\Temp\good.exe N/A

Processes

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

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

C:\Windows\3049586940303040\wcfgmgr32.exe

C:\Windows\3049586940303040\wcfgmgr32.exe

Network

Country Destination Domain Proto
N/A 92.63.197.153:80 tcp
N/A 92.63.197.153:80 tcp
N/A 8.8.8.8:53 efhoahegue.ru udp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 8.8.8.8:53 afhoahegue.ru udp
N/A 8.8.8.8:53 rfhoahegue.ru udp
N/A 8.8.8.8:53 tfhoahegue.ru udp
N/A 8.8.8.8:53 xfhoahegue.ru udp

Files

memory/1924-0-0x0000000002E22000-0x0000000002E26000-memory.dmp

\Windows\3049586940303040\wcfgmgr32.exe

MD5 b034e2a7cd76b757b7c62ce514b378b4
SHA1 27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512 1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

memory/1696-3-0x0000000000000000-mapping.dmp

\Windows\3049586940303040\wcfgmgr32.exe

MD5 b034e2a7cd76b757b7c62ce514b378b4
SHA1 27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512 1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

C:\Windows\3049586940303040\wcfgmgr32.exe

MD5 b034e2a7cd76b757b7c62ce514b378b4
SHA1 27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512 1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

memory/1696-5-0x0000000002E52000-0x0000000002E56000-memory.dmp

memory/1652-6-0x000007FEF6270000-0x000007FEF64EA000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-05 16:33

Reported

2020-11-05 16:36

Platform

win10v20201028

Max time kernel

149s

Max time network

150s

Command Line

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

Signatures

Phorphiex Worm

worm trojan loader phorphiex

Windows security bypass

evasion trojan

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows\3049586940303040\wcfgmgr32.exe N/A

UPX packed file

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

Windows security modification

evasion trojan
Description Indicator Process Target
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1" C:\Windows\3049586940303040\wcfgmgr32.exe N/A
Set value (int) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1" C:\Windows\3049586940303040\wcfgmgr32.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\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe" C:\Users\Admin\AppData\Local\Temp\good.exe N/A
Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe" C:\Users\Admin\AppData\Local\Temp\good.exe N/A

Drops file in Windows directory

Description Indicator Process Target
File opened for modification C:\Windows\3049586940303040\wcfgmgr32.exe C:\Users\Admin\AppData\Local\Temp\good.exe N/A
File opened for modification C:\Windows\3049586940303040 C:\Users\Admin\AppData\Local\Temp\good.exe N/A
File created C:\Windows\3049586940303040\wcfgmgr32.exe C:\Users\Admin\AppData\Local\Temp\good.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1628 wrote to memory of 3520 N/A C:\Users\Admin\AppData\Local\Temp\good.exe C:\Windows\3049586940303040\wcfgmgr32.exe
PID 1628 wrote to memory of 3520 N/A C:\Users\Admin\AppData\Local\Temp\good.exe C:\Windows\3049586940303040\wcfgmgr32.exe
PID 1628 wrote to memory of 3520 N/A C:\Users\Admin\AppData\Local\Temp\good.exe C:\Windows\3049586940303040\wcfgmgr32.exe

Processes

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

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

C:\Windows\3049586940303040\wcfgmgr32.exe

C:\Windows\3049586940303040\wcfgmgr32.exe

Network

Country Destination Domain Proto
N/A 92.63.197.153:80 tcp
N/A 8.8.8.8:53 efhoahegue.ru udp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 35.205.61.67:80 efhoahegue.ru tcp
N/A 8.8.8.8:53 afhoahegue.ru udp
N/A 8.8.8.8:53 rfhoahegue.ru udp
N/A 8.8.8.8:53 tfhoahegue.ru udp
N/A 8.8.8.8:53 xfhoahegue.ru udp
N/A 8.8.8.8:53 efhoahegue.su udp
N/A 8.8.8.8:53 afhoahegue.su udp
N/A 8.8.8.8:53 rfhoahegue.su udp
N/A 8.8.8.8:53 tfhoahegue.su udp
N/A 8.8.8.8:53 xfhoahegue.su udp
N/A 92.63.197.153:80 tcp
N/A 92.63.197.153:80 tcp
N/A 92.63.197.153:80 tcp

Files

memory/1628-0-0x0000000002E11000-0x0000000002E15000-memory.dmp

C:\Windows\3049586940303040\wcfgmgr32.exe

MD5 b034e2a7cd76b757b7c62ce514b378b4
SHA1 27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512 1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

memory/3520-1-0x0000000000000000-mapping.dmp

C:\Windows\3049586940303040\wcfgmgr32.exe

MD5 b034e2a7cd76b757b7c62ce514b378b4
SHA1 27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512 1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

memory/3520-4-0x0000000002D81000-0x0000000002D85000-memory.dmp