Detections

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

1,252 detections

Sweeps endpoint telemetry for known IOCs from the trojanized anthropic.claude-code (Open-VSX v2.1.313) SSH backdoor: C2 IP 134.209.82.225, beacon URL, extension.js and tunnel key SHA-256 hashes, and ifconfig.me lookups from VS Code-family/extension-host processes. Results are summarized per device and IOC.
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Arnold Chan@slaz
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Detection & Hunting Community
9 hours ago
000
Sweeps endpoint telemetry for known IOCs from the trojanized anthropic.claude-code (Open-VSX v2.1.313) SSH backdoor: C2 IP 134.209.82.225, beacon URL, extension.js and tunnel key SHA-256 hashes, and ifconfig.me lookups from VS Code-family/extension-host processes. Results are summarized per device and IOC.
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Arnold Chan@slaz
Defender - KQL
9 hours ago
000
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.
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Arnold Chan@slaz
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Detections.ai Community
14 days ago
3019
Detects a threat identified by Cisco Meraki. Meraki is the security stack for branch
offices, retail sites and small locations that have no local IT presence — the parts
of an estate least likely to be monitored and most likely to be the way in.

Onboarding: CISCO-MERAKI is ingested via Syslog (Bloo extractor 300).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=threat where sourcename='CISCO-MERAKI' and action='THREAT_DETECTED'
| groupby srcip, dstip, threat, user
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
104
Detects outbound network connections to domains associated with the AdFection / Discover-Tech / Controlium threat infrastructure using a Sentinel watchlist, filtering out known browser activity or allowing custom domain lists.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
9 days ago
004
Detects msiexec.exe spawning scripting or programming engines (such as PowerShell or Python) that perform LDAP directory searches and establish outbound external network connections within a specific time window.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
3 days ago
000
Detects msiexec.exe spawning scripting or programming engines (such as PowerShell or Python) that perform LDAP directory searches and establish outbound external network connections within a specific time window.
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ills3c Intel&Coffee@Ills3C
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Detections.ai Community
3 days ago
000
Detects connections held open far longer than normal. Interactive command and
control, tunnelling and remote access tooling all maintain long sessions, whereas
ordinary application traffic is short-lived and bursty.

Duration is available directly in the connection record, which makes this far
cheaper to evaluate than reconstructing sessions from flow data.

Onboarding: NTA is ingested via Network Traffic Analysis (Bloo extractor 717).
Integration guide: https://bloo.io/docs/integrations

BQL (Bloo Query Language):

stream=nta-connection where sourcename='NTA'
and action='CONNECTION_ESTABLISHED'
| duration 24h
| groupby srcip, dstip, dstport, app, duration
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
003
Detects network, DNS, email, and URL click events matching known IOC domains associated with AdFection, Candiru, and Discover-Tech threat intelligence reports.
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Arnold Chan@slaz
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Detections.ai Community
15 days ago
8014
Detects the execution of potential tunneling tools from temporary directories (/tmp, /dev/shm, /var/tmp) using characteristic CLI arguments such as --listen, --token, --obfs, and --ws-path, or the known binary name 'ingredi_ws'.
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Arnold Chan@slaz
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Detections.ai Community
11 days ago
305
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.
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Arnold Chan@slaz
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Hunters
14 days ago
509
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.
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Arnold Chan@slaz
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Detection & Hunting Community
14 days ago
107
Detects the execution of potential tunneling tools from temporary directories (/tmp, /dev/shm, /var/tmp) using characteristic CLI arguments such as --listen, --token, --obfs, and --ws-path, or the known binary name 'ingredi_ws'.
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Arnold Chan@slaz
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Detection & Hunting Community
11 days ago
003
Detects the execution of potential tunneling tools from temporary directories (/tmp, /dev/shm, /var/tmp) using characteristic CLI arguments such as --listen, --token, --obfs, and --ws-path, or the known binary name 'ingredi_ws'.
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Arnold Chan@slaz
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Midnight Slayer
11 days ago
003
IOC sweep for ARTEX campaign indicators: C2 host, nine proxy IPs, xcai.pro and its subdomains, and the CLAUDE.md URL across Defender, CEF/firewall, DNS and Entra sign-in telemetry. Domains match on exact host or subdomain only, connection types are limited to real connection events, and sign-ins are limited to successes and credential failures.
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Arnold Chan@slaz
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Detections.ai Community
22 days ago
9065
Sweeps Defender XDR telemetry for known NEBULA / KNTRAT indicators (SHA256 hashes, C2 IP, decoy domain and URLs, burner publisher emails). Hash matching is scoped per table (execution hash only in process events), noisy tooling is excluded from command-line matches, network hits are limited to connection events, and results are aggregated per device and IOC.
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Arnold Chan@slaz
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Detections.ai Community
16 days ago
4010
Detects persistent blocked web requests from one internal source. A person stops
after a block; software does not. Sustained retries after blocking indicate
automation attempting to reach a destination it has been configured to use.

Onboarding: SAFESQUID-SWG is ingested via Syslog (Bloo extractor 812).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=webfilter where sourcename='SAFESQUID-SWG' and action='URL_BLOCKED'
| duration 1h
| groupby srcip, user, category
| select srcip, user, category, count(*) as cnt
| having cnt > 25
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
001
Detects web access through Meraki content filtering. Branch users frequently work
without the endpoint controls applied at headquarters, so the network appliance is
often the only layer observing where they go.

Onboarding: CISCO-MERAKI is ingested via Syslog (Bloo extractor 300).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=webfilter where sourcename='CISCO-MERAKI' and action='URL_ACCESSED'
| duration 1h
| groupby srcip, domain, url, useragent, user
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
001
Detects one internal source repeatedly blocked from reaching URLs. Persistent
attempts after a block indicate automated software rather than a person — a person
gives up, malware retries on a timer.

Onboarding: VERSA-NETWORKS is ingested via Syslog (KV) (Bloo extractor 806).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=webfilter where sourcename='VERSA-NETWORKS' and action='URL_BLOCKED'
| duration 1h
| groupby srcip, user
| select srcip, user, count(*) as cnt
| having cnt > 20
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
001
Detects a threat raised by Versa Networks on a zero trust session. Versa sits at the
branch edge, so it observes traffic from sites that frequently have no local
security stack at all — in many estates it is the only sensor between a remote
office and the internet.

Onboarding: VERSA-NETWORKS is ingested via Syslog (KV) (Bloo extractor 806).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=threat where sourcename='VERSA-NETWORKS' and action='THREAT_DETECTED'
| groupby user, srcip, dstip, threat, process
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
001
Detects a decoy asset initiating an outbound connection. A decoy should only ever
receive traffic. Outbound activity means the asset has been compromised and is being
used as a launch point, or that attacker tooling on it is calling home.

The destination is live command-and-control infrastructure and should be blocked
estate-wide immediately rather than only on the decoy.

Onboarding: SMOKESCREEN is ingested via Syslog (CEF) (Bloo extractor 206).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector

BQL (Bloo Query Language):

stream=threat where sourcename='SMOKESCREEN' and action='THREAT_DETECTED'
and dstip != ''
| groupby dstip, url, process, srcip
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Siddhant Mishra@Siddhant
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Bloo SpecterForce
9 days ago
001
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