phorphiex | 8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9

General

Target
8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe
Size 69KB
Sample211221-n239bsdcf3
SHA256 8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9
MD5 5bbd9bc7dafd0a6076ed450aa18afc0a
SHA1 3ec5aa4b6185a505c521b07268d19a12455754e5
SHA512 2d5f87490b90611bc9602c4f36933294f1021b20893275429b2d36b5e2b691d0eb8703579373dc43929902387032f74a51c7a7ec98aff3a3764d13d0bc8bbd3a
MD5 SHA1 SHA512

Score

10^/10

phorphiex evasion loader persistence trojan worm

Malware Config

Signatures

Phorphiex Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000600000001ab20-119.dat	family_phorphiex
behavioral2/files/0x000600000001ab20-120.dat	family_phorphiex

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
1316	wudsvsmgr.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\UpdatesOverride = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiSpywareOverride = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	wudsvsmgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	wudsvsmgr.exe

Adds Run key to start application 2 TTPs 1 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\Microsoft Windows Update Service = "C:\\Windows\\wudsvsmgr.exe"	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\wudsvsmgr.exe	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe
File opened for modification	C:\Windows\wudsvsmgr.exe	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 1316	3144	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe	69
PID 3144 wrote to memory of 1316	3144	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe	69
PID 3144 wrote to memory of 1316	3144	8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe	69

C:\Users\Admin\AppData\Local\Temp\8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe
"C:\Users\Admin\AppData\Local\Temp\8f49d7e3596aff4c8cd3aa38d0dc6911ae77e54cc3b13210d95c9f38063317a9.bin.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\wudsvsmgr.exe
  C:\Windows\wudsvsmgr.exe
  2⤵
  - Executes dropped EXE
  - Windows security modification
  PID:1316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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