Arnold Chan
@slazTrusted contributorCompletionist
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This rule detects the installation of browser extensions that occur during an idle user session (greater than 7 minutes). This behavior is consistent with automated, remote-driven synthetic input injection, often utilized by malware (e.g., NinjaMare) to install malicious extensions without user consent while the system is unattended.
Detects the execution of 'driverquery.exe' to enumerate information about the 'npf.sys' driver (Network Packet Filter), which is associated with Npcap/WinPcap used for packet capture. The rule specifically monitors when this command is launched by non-standard parent processes like 'report.bin' or 'nw.exe', which may indicate malicious reconnaissance or network monitoring tools.
KQL Query from file: repeated-unauthenticated-post-to-elementor-pro-forms-endpoint-cve-2026-32475-pr.kql
Detects the initialization of PostgreSQL logical replication slots using uncommon or unrecognized output plugins. Attackers may leverage logical replication plugins to exfiltrate data from a database by streaming changes as they occur, which can be an alternative to traditional mass-export techniques.
This rule detects network communication (via DNS queries, web logs, or device network events) with a list of known malicious domains associated with Command and Control (C2) activity.
Detects suspicious behavior from database accounts with replication privileges ('rolreplication=true'). The rule monitors for logins from unauthorized IP addresses, the execution of non-replication related SQL commands by these accounts, and the use of potentially malicious plugin names (containing path traversal characters) during replication slot creation.
KQL Query from file: postgresql-server-executes-code-via-malicious-logical-decoding-plugin.kql
Detects instances where unauthenticated users or sessions execute privileged 'tools/call' operations within the Grafana MCP dispatcher. This behavior is indicative of potential session spoofing attacks, specifically targeting vulnerabilities similar to CVE-2026-19516, where lack of an Authorization header allows unauthorized access to privileged tool functions.
This rule detects file access, creation, modification, or renaming operations involving sensitive files associated with cryptocurrency wallets (Bitcoin, Electrum, ElectrumSV), game account configurations (Battle.net, Steam, Minecraft), and browser-based cookies (Roblox). The rule filters out legitimate process interactions, identifying suspicious activity from unknown or unauthorized applications potentially attempting to exfiltrate credentials or session tokens.
Detects malicious network connections, file downloads, or process execution associated with the REVSTEALER malware campaign, which utilizes hijacked YouTube channels to distribute fake game-cheat videos that lure users into downloading 'resightloader.exe' from specific malicious domains.
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