phorphiex | 1bf6d14c4b5f59aa30882f4aa25e9e9d703dac905a785fe020ff667600e5fc97

Analysis

max time kernel
296s
max time network
311s
platform
windows10_x64
resource
win10v20201028
submitted
18-11-2020 15:58

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General

Target

good.exe

Score

10^/10

phorphiex evasion loader persistence trojan upx worm

Malware Config

Signatures

Phorphiex Worm
Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.
worm trojan loader phorphiex
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112

Executes dropped EXE 1 IoCs

pid	Process
3612	wcfgmgr32.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral21/files/0x000100000001ab99-2.dat	upx
behavioral21/files/0x000100000001ab99-3.dat	upx

Windows security modification 2 TTPs 7 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AutoUpdateDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wcfgmgr32.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wcfgmgr32.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe"	good.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe"	good.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\3049586940303040\wcfgmgr32.exe	good.exe
File opened for modification	C:\Windows\3049586940303040	good.exe
File created	C:\Windows\3049586940303040\wcfgmgr32.exe	good.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 3612	636	good.exe	75
PID 636 wrote to memory of 3612	636	good.exe	75
PID 636 wrote to memory of 3612	636	good.exe	75

C:\Users\Admin\AppData\Local\Temp\good.exe
"C:\Users\Admin\AppData\Local\Temp\good.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:636
- C:\Windows\3049586940303040\wcfgmgr32.exe
  C:\Windows\3049586940303040\wcfgmgr32.exe
  2⤵
  - Executes dropped EXE
  - Windows security modification
  PID:3612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

T1089

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/636-0-0x0000000002D31000-0x0000000002D35000-memory.dmp

Filesize
16KB

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memory/3612-4-0x0000000002EC1000-0x0000000002EC5000-memory.dmp

Filesize
16KB

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads