phorphiex | 90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac

General

Target

good.exe
Size

143KB
MD5

b034e2a7cd76b757b7c62ce514b378b4
SHA1

27d15f36cb5e3338a19a7f6441ece58439f830f2
SHA256

90d3580e187b631a9150bbb4a640b84c6fa990437febdc42f687cc7b3ce1deac
SHA512

1cea6503cf244e1efb6ef68994a723f549126fc89ef8a38c76cdcc050d2a4524e96402591d1d150d927a12dcac81084a8275a929cf6e5933fdf62502c9c84385

Score

10^/10

phorphiex evasion loader persistence trojan upx worm

Malware Config

Signatures

Modifies Windows Defender Real-time Protection settings 3 TTPs
evasion trojan

Modify Registry
T1112

Modify Existing Service
T1031

Disabling Security Tools
T1089
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
1696	wcfgmgr32.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00050000000130d3-1.dat	upx
behavioral1/files/0x00050000000130d3-2.dat	upx
behavioral1/files/0x00050000000130d3-4.dat	upx

Loads dropped DLL 2 IoCs

pid	Process
1924	good.exe
1924	good.exe

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\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
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

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\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\WCfgMgr32 = "C:\\Windows\\3049586940303040\\wcfgmgr32.exe"	good.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\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 4 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 1696	1924	good.exe	29
PID 1924 wrote to memory of 1696	1924	good.exe	29
PID 1924 wrote to memory of 1696	1924	good.exe	29
PID 1924 wrote to memory of 1696	1924	good.exe	29

C:\Users\Admin\AppData\Local\Temp\good.exe
"C:\Users\Admin\AppData\Local\Temp\good.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Windows\3049586940303040\wcfgmgr32.exe
  C:\Windows\3049586940303040\wcfgmgr32.exe
  2⤵
  - Executes dropped EXE
  - Windows security modification
  PID:1696

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Disabling Security Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2.5MB

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

Filesize
16KB

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

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads