Information hacker
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Detects the creation of scheduled tasks using 'schtasks /create' that include suspicious command-line arguments often associated with malicious activity, such as PowerShell execution, web requests (Invoke-WebRequest, curl, wget, bitsadmin), or script execution (.ps1, .vbs, .js). This rule aims to identify persistence mechanisms or initial access attempts.
A widespread campaign employs malvertising to distribute converter tools that secretly install persistent Remote Access Trojans. These droppers establish scheduled tasks and leverage code signing to load and execute further malicious .NET assemblies from command-and-control servers, enabling continuous system access and data exfiltration.
This rule detects network connections to known cryptocurrency mining pools or domains associated with cryptocurrency mining activities. It specifically looks for keywords like 'miningpool', 'stratum', 'xmr', 'ethash', 'moneropool' in the remote URL or specific IP addresses like 'connect.moneropool.com' and 'pool.supportxmr.com'. This activity often indicates unauthorized resource hijacking (cryptojacking) on the affected device.
This rule detects inbound network connections to internet-facing devices on ports other than 80 (HTTP) or 443 (HTTPS). This could indicate an adversary attempting to establish command and control, exfiltrate data, or exploit services running on non-standard ports.
This rule detects network connections initiated by 'tor.exe' or 'meek-client.exe', indicating potential use of the Tor anonymity network. It enriches the events with process and certificate information to provide context about the initiating process and its trust status.
This rule detects inbound emails classified as phishing or malware by the email security system. It summarizes the total number of such messages, provides sample subjects, and counts how many were blocked, delivered to mailboxes, junked, or had other actions. The rule specifically focuses on emails that were delivered to a mailbox, indicating a potential bypass of initial security measures or a need for further investigation.
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