Компонент серверного ПО
Sub-techniques (5)
Adversaries may abuse legitimate extensible development features of servers to establish persistent access to systems. Enterprise server applications may include features that allow developers to write and install software or scripts to extend the functionality of the main application. Adversaries may install malicious components to extend and abuse server applications.(Citation: volexity_0day_sophos_FW)
Контрмеры |
|
| Контрмера | Описание |
|---|---|
| Code Signing |
Enforce binary and application integrity with digital signature verification to prevent untrusted code from executing. |
| Audit |
Perform audits or scans of systems, permissions, insecure software, insecure configurations, etc. to identify potential weaknesses. |
| Restrict Registry Permissions |
Restrict the ability to modify certain hives or keys in the Windows Registry. |
| Disable or Remove Feature or Program |
Remove or deny access to unnecessary and potentially vulnerable software to prevent abuse by adversaries. |
| User Account Management |
Manage the creation, modification, use, and permissions associated to user accounts. |
| Privileged Account Management |
Manage the creation, modification, use, and permissions associated to privileged accounts, including SYSTEM and root. |
Обнаружение
Consider monitoring application logs for abnormal behavior that may indicate suspicious installation of application software components. Consider monitoring file locations associated with the installation of new application software components such as paths from which applications typically load such extensible components. Process monitoring may be used to detect servers components that perform suspicious actions such as running cmd.exe or accessing files. Log authentication attempts to the server and any unusual traffic patterns to or from the server and internal network. (Citation: US-CERT Alert TA15-314A Web Shells)
Ссылки
- US-CERT. (2015, November 13). Compromised Web Servers and Web Shells - Threat Awareness and Guidance. Retrieved June 8, 2016.
- Adair, S., Lancaster, T., Volexity Threat Research. (2022, June 15). DriftingCloud: Zero-Day Sophos Firewall Exploitation and an Insidious Breach. Retrieved July 1, 2022.
- NSA and ASD. (2020, April 3). Detect and Prevent Web Shell Malware. Retrieved July 23, 2021.
- Kondratiev, A. (n.d.). Disabling dangerous PHP functions. Retrieved July 26, 2021.
- Microsoft. (2018, February 17). Windows System Services Fundamentals. Retrieved March 28, 2022.
Связанные риски
Каталоги
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