phorphiex | 0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73 | Triage

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18-04-2024 11:23

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18-04-2024 11:22

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Analysis

max time kernel
162s
max time network
176s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
submitted
18-04-2024 11:23

Sharing

Report Analysis Logs

General

Target

0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe
Size

104KB
MD5

e28889b5f98d8ed1a00835e1ca8a3b21
SHA1

b665e89468ac7ae566aa996aeec203b25bf24b0c
SHA256

0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73
SHA512

d3f1708274dd84045c46c3315aeba5c16f890d94ddfcda0df29e96bc3a0159ead0f8945898d6dde25ad01981e385a41b69b1bdfd700e08f47249bffece941cbd
SSDEEP

3072:Xl58BV2ZjooGTb5PjMdhS3KV3/jjKwcNHjo86r8X7FS8EFc:158BIFveZjMrS3q3/jjKwcNHjo86r8r6

Score

10^/10

phorphiex evasion loader persistence trojan worm

Malware Config

Signatures

Phorphiex
Malware family which infects systems to distribute other malicious payloads such as ransomware, stealers and cryptominers.
worm trojan loader phorphiex

Phorphiex payload 1 IoCs

Processes:

resource	yara_rule
C:\19297158328981\smss.exe	family_phorphiex

Windows security bypass 2 TTPs 6 IoCs

Disable or Modify Tools

Modify Registry

Processes:

smss.exe

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

Executes dropped EXE 1 IoCs

Processes:

smss.exe

pid process

1104 smss.exe

Windows security modification 2 TTPs 7 IoCs

Disable or Modify Tools

Modify Registry

Processes:

smss.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

Processes:

0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Host Process for Windows Services = "C:\\19297158328981\\smss.exe"	0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3727096518-2913484142-3593445157-1000\Software\Microsoft\Windows\CurrentVersion\Run\Host Process for Windows Services = "C:\\19297158328981\\smss.exe"	0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe

description	pid	process	target process
PID 4660 wrote to memory of 1104	4660	0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe	smss.exe
PID 4660 wrote to memory of 1104	4660	0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe	smss.exe
PID 4660 wrote to memory of 1104	4660	0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe	smss.exe

C:\Users\Admin\AppData\Local\Temp\0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe
"C:\Users\Admin\AppData\Local\Temp\0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4660

C:\19297158328981\smss.exe
C:\19297158328981\smss.exe
2⤵
- Windows security bypass
- Executes dropped EXE
- Windows security modification
PID:1104

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Defense Evasion

Impair Defenses

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\19297158328981\smss.exe
Filesize
104KB

MD5
e28889b5f98d8ed1a00835e1ca8a3b21

SHA1
b665e89468ac7ae566aa996aeec203b25bf24b0c

SHA256
0429bed4098d95e68e4686ed79cb3967e7396956a095433dd56f4e3d49135d73

SHA512
d3f1708274dd84045c46c3315aeba5c16f890d94ddfcda0df29e96bc3a0159ead0f8945898d6dde25ad01981e385a41b69b1bdfd700e08f47249bffece941cbd

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