Detections

Explore public detection logic contributed by the community across SIEM and rule languages.

289 detections

Detects a high volume of authentication failures followed by a successful authentication from the same source IP address against edge devices like FortiGate or Palo Alto GlobalProtect within a specific time window.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
3 days ago
3011
Detects successful administrative login events originating from IP addresses outside of configured trusted management networks on Fortinet devices.
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Kjetil Fjas@Kjefjas
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Detections.ai Community
6 days ago
4010
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
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Arnold Chan@slaz
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Detections.ai Community
11 days ago
1010
Detects configuration changes on the FortiWeb WAF. Disabling a signature, adding an
exclusion or switching a policy to monitor-only removes protection from the
application behind it — and because the application keeps working normally, nothing
else signals that the control has gone.

Onboarding: FORTIWEB is ingested via Syslog (CEF) (Bloo extractor 115).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=configuration where sourcename='FORTIWEB'
and action='CONFIGURATION_CHANGED'
| groupby user, config
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
7 days ago
103
Detects administrative login to the FortiWeb console from an address without prior
history. Console access permits policy change and signature control, so compromise
of the WAF administrator is equivalent to removing the WAF for every application
behind it.

Onboarding: FORTIWEB is ingested via Syslog (CEF) (Bloo extractor 115).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=authentication where sourcename='FORTIWEB' and action='LOGIN'
| groupby user, srcip
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
7 days ago
103
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.
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Arnold Chan@slaz
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Detections.ai Community
11 days ago
006
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
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Arnold Chan@slaz
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Detection & Hunting Community
11 days ago
005
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
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Arnold Chan@slaz
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Midnight Slayer
11 days ago
005
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
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Arnold Chan@slaz
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Hunters
11 days ago
005
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.
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Arnold Chan@slaz
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Midnight Slayer
11 days ago
005
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.
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Arnold Chan@slaz
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Hunters
11 days ago
005
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.
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Arnold Chan@slaz
Defender - KQL
11 days ago
003
Detects inbound external connections on TCP port 541 (FGFM/FMG-Access protocol) correlated with the creation of .tm archives on the same device, or connections from known malicious IP addresses communicating over TCP 541.
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Arnold Chan@slaz
Defender - KQL
11 days ago
002
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.
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Arnold Chan@slaz
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Detection & Hunting Community
11 days ago
002
Detects potential unauthorized or suspicious configuration changes related to packet sniffer objects and associated authentication or management ports on FortiGate firewalls across multiple devices.
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Arnold Chan@slaz
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Detections.ai Community
11 days ago
202
Detects post-exploitation activities associated with FortiMail vulnerability CVE-2026-104286 (FG-IR-26-175). The rule identifies potential unauthorized persistence and data exfiltration, including the creation or modification of archive accounts with remote destinations, execution of 'migadmin' via root cron, and specific admin logout anomalies.
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Tim Peck@timpeck
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Detections.ai Community
22 days ago
5056
Detects potential unauthorized or suspicious configuration changes related to packet sniffer objects and associated authentication or management ports on FortiGate firewalls across multiple devices.
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Arnold Chan@slaz
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Midnight Slayer
11 days ago
000
Detects potential unauthorized or suspicious configuration changes related to packet sniffer objects and associated authentication or management ports on FortiGate firewalls across multiple devices.
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Arnold Chan@slaz
Defender - KQL
11 days ago
000
Detects potential unauthorized or suspicious configuration changes related to packet sniffer objects and associated authentication or management ports on FortiGate firewalls across multiple devices.
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Arnold Chan@slaz
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Hunters
11 days ago
000
Detects potential unauthorized or suspicious configuration changes related to packet sniffer objects and associated authentication or management ports on FortiGate firewalls across multiple devices.
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Arnold Chan@slaz
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Detection & Hunting Community
11 days ago
000
Detects potential reconnaissance or port scanning activities against firewall or UTM management interfaces from external IP addresses. The rule identifies sources that trigger a high volume of blocked or denied attempts across multiple management ports (e.g., SSH, HTTP/S, GUI ports) within a one-hour window.
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Ankit Mehta@Secvyn
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Detection & Hunting Community
28 days ago
3010
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