// MITRE ATT&CK
T1505.003 · Web Shell
Sub-technique of T1505 · Server Software Component.
Adversaries may backdoor web servers with web shells to establish persistent access to systems. A Web shell is a Web script that is placed on an openly accessible Web server to allow an adversary to access the Web server as a gateway into a network. A Web shell may provide a set of functions to exec...
How to detect & mitigate it
Detecting Web Shell starts with your SIEM/EDR telemetry. Write a detection rule with the Sigma generator, analyze suspicious logs in the log analyzer, and place the technique on your coverage with the ATT&CK matrix.
Related techniques
T1037
Boot or Logon Initialization Scripts T1543
Create or Modify System Process T1133
External Remote Services T1547
Boot or Logon Autostart Execution T1547.014
Active Setup T1176.001
Browser Extensions T1543.003
Windows Service T1137
Office Application Startup
Boot or Logon Initialization Scripts T1543
Create or Modify System Process T1133
External Remote Services T1547
Boot or Logon Autostart Execution T1547.014
Active Setup T1176.001
Browser Extensions T1543.003
Windows Service T1137
Office Application Startup
Source: MITRE ATT&CK®. ATT&CK is a registered trademark of The MITRE Corporation. Content for educational purposes.