Arnold Chan
@slazTrusted contributorCompletionist
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Detects external inbound FortiGate Fabric Management Protocol (FGFM) traffic on TCP port 541 followed by a FortiGateCloud administrative configuration download, backup, or running-config event on the same FortiGate device within a one-hour window, potentially indicating unauthorized configuration access or device compromise.
Detects an Entra 'Add device' event within 2 minutes after a successful sign-in from an IP never seen for that user in the lookback window, and where the registration originates from that same new IP (rogue device persistence after token replay).
This rule performs a sweep across device file and network events for indicators of compromise (IOCs) associated with the UAT-11587/Antino campaign. It detects malicious file hashes, specific C2 domain connections, and known lure URLs (HTA/WSF) identified by Cisco Talos.
Detects network connections, process executions, file creations, and image loads associated with the UNC7017 AOMEI supply chain campaign IOC sweep, including specific malicious URLs, domains, IPs, file paths, and hashes.
Detects endpoint, network, and security log activity matching known indicators of compromise (IOCs) associated with PEERSTITCH / CL-STA-0954, including specific file hashes, IP addresses, and URLs.
Detects endpoint, network, and security log activity matching known indicators of compromise (IOCs) associated with PEERSTITCH / CL-STA-0954, including specific file hashes, IP addresses, and URLs.
Detects external inbound FortiGate Fabric Management Protocol (FGFM) traffic on TCP port 541 followed by a FortiGateCloud administrative configuration download, backup, or running-config event on the same FortiGate device within a one-hour window, potentially indicating unauthorized configuration access or device compromise.
Sweeps email telemetry for exact matches against known Kimsuky (APT-C-55) infrastructure email addresses. Matches are exact and case-insensitive. MatchType separates inbound mail from the actor and outbound mail to the actor.
Sweeps file, process and image-load telemetry for known Kimsuky (APT-C-55) malware MD5 hashes. Exact hash matches carry very low false-positive risk.
Detects network connections, process command-line executions, and email URL info matching known APT28 (Swallowtail, HOOKEDGE, LegionRelay) indicators of compromise, including specific IP addresses and GUIDs.
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