Backdoor:PowerShell/CryptedLoader.PS

Guidance for individual users

Keep your operating system and antivirus products up to date.

To learn more about preventing trojans or other malware from affecting individual devices, read about preventing malware infection. For more tips on how to keep your device safe, go to the Microsoft security help & learning portal.

Guidance for enterprise administrators

Following the mitigation steps below can help prevent malware attacks:

• Harden internet-facing assets and ensure they have the latest security updates. Use threat and vulnerability management to audit these assets regularly for vulnerabilities, misconfigurations, and suspicious activity.
• Turn on attack surface reduction rules, including rules that block credential theft, ransomware activity, and suspicious use of PsExec and WMI. To address malicious activity initiated through weaponized Office documents, use rules that block advanced macro activity, executable content, process creation, and process injection initiated by Office applications. To assess the impact of these rules, deploy them in audit mode.
• Turn on tamper protection features to prevent attackers from stopping security services.