Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
2,132 detections
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Detects web server processes (apache2, httpd) spawning a Unix shell (sh, dash, bash) which subsequently executes curl, wget, or php to perform an external HTTP fetch or download. This behavior is commonly associated with PHP or web application post-exploitation callbacks (webshells).
Correlates a CVE-2026-76504 encoded /%6a_security_check login POST with a follow-on /dataservice/admin/user request from the same client to the same vManage within 10 minutes. Summarized and sorted by follow-on count.
Detects web server processes (Apache httpd, apache2, php-cgi, php-fpm) spawning a Unix shell (sh, bash, dash) that executes a wget or curl command piped directly into the shell for execution, indicative of potential remote code execution or web shell activity.
Detects multiple distinct source IPs sending forged 'pitboss PPE' authentication failure messages to NetScaler authentication endpoints within a short timeframe, associated with a fetch-based FreeBSD payload download (kw2-freebsd-x64-s11).
Detects HTTP requests containing serialized PHP objects in the Cookie header matching patterns associated with Zend Framework or Laminas gadget chains, characteristic of PHP object deserialization exploitation (e.g., PHPGGC style).
Detects web server worker processes (such as php-fpm, apache2, nginx, w3wp.exe) spawning download utilities like curl or wget, certutil with transfer flags, or initiating /dev/tcp network connections, which may indicate web application exploitation or webshell activity.
This analytic detects multipart POST traffic with a serialized PHP structure in an uploaded filename, which may indicate an attempt to exploit PHP session upload-progress handling and can be associated with PHP2Shell activity.
Suricata EVE's standard HTTP events do not expose multipart form field names, so this Suricata variant cannot confirm the PHP_SESSION_UPLOAD_PROGRESS field without additional request-body inspection.
Suricata EVE's standard HTTP events do not expose multipart form field names, so this Suricata variant cannot confirm the PHP_SESSION_UPLOAD_PROGRESS field without additional request-body inspection.
Correlates an inbound connection to a Python/Xoscar/Xinference pool process with an outbound connection from a shell spawned by that same pool process shortly afterward, potentially indicating exploitation and reverse shell activity.
Detects CVE-2026-76504 Cisco SD-WAN vManage authentication bypass attempts: POST logins using internal viptela-reserved-* accounts via the percent-encoded /%6a_security_check path. Summarized per host and account.
Detects the presence of Cisco SD-WAN vManage software, vulnerabilities related to CVE-2026-76504, associated file artifacts, and process executions across endpoints using inventory and event logs.
Detects a sequence where an UpdraftCentral management request is made to a WordPress site followed by plugin installation or user creation requests from the same source within a 30-minute window, potentially indicating unauthorized plugin installation or webshell deployment via compromised management endpoints.
Detects potential SQL injection (SQLi) attempts targeting web applications by identifying multiple requests matching specific SQLi regex patterns combined with encoding or internal reference markers within web access logs.
Detects a sequence where a SharePoint application pool worker process (w3wp.exe) spawns a command shell (cmd.exe, powershell.exe, pwsh.exe) related to SharePoint, followed shortly (within 1 hour) by high-fidelity lateral movement tooling or remote execution techniques (such as PsExec, WMI, PowerShell remoting, or scheduled tasks) on the same host.
Detects suspicious exploitation activity against NetScaler ADC/Gateway appliances, including requests to CGI, VPN, or authentication endpoints with command execution, webshell, or encoded payload behavior associated with CVE-2026-88771.
Detects repeated crashes of GitLab Ruby, Puma, Sidekiq, or bundle processes on Linux within a short time window. The detection looks for crash markers such as segfault, SIGSEGV, SIGABRT, or onigmo in the command line, which typically indicate exploitation attempts against Onigmo regex engine vulnerabilities.
Detects a burst of denied requests at the load balancer. The appliance sits in front
of the application and sees attempts the application never receives, which makes it
an early warning layer that most estates collect and never query.
Onboarding: BARRACUDA-LOADBALANCER is ingested via Syslog (CEF) (Bloo extractor 859).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=webserver where sourcename='BARRACUDA-LOADBALANCER'
and action='REQUEST_DENIED'
| duration 15m
| groupby srcip, useragent
| select srcip, useragent, distinct_count(url)
| having distinct_count_col1 > 20
of the application and sees attempts the application never receives, which makes it
an early warning layer that most estates collect and never query.
Onboarding: BARRACUDA-LOADBALANCER is ingested via Syslog (CEF) (Bloo extractor 859).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=webserver where sourcename='BARRACUDA-LOADBALANCER'
and action='REQUEST_DENIED'
| duration 15m
| groupby srcip, useragent
| select srcip, useragent, distinct_count(url)
| having distinct_count_col1 > 20
Detects web servers (httpd, apache2, nginx, php-fpm) or Request Tracker (RT) Perl worker processes spawning suspicious child processes such as shells, downloaders, netcat, or Python interpreters, indicative of post-exploitation or web application compromise.
Detects CVE-2026-76504 Cisco SD-WAN vManage authentication bypass attempts: POST logins using internal viptela-reserved-* accounts via the percent-encoded /%6a_security_check path. Summarized per host and account.
Correlates a CVE-2026-76504 encoded /%6a_security_check login POST with a follow-on /dataservice/admin/user request from the same client to the same vManage within 10 minutes. Summarized and sorted by follow-on count.
Finds BeyondTrust Remote Support (Bomgar) appliances at version 26.2.3 or earlier that have a public IP address, indicating a potentially internet-facing vulnerable appliance (CVE-2026-102764). Index and field names are placeholders to adapt.
Detects an attack identified by the FortiWeb web application firewall. WAF telemetry
is widely collected and almost never turned into detection content — it is usually
left as a vendor dashboard, so repeated targeting of one application by one source
goes unexamined.
Onboarding: FORTIWEB is ingested via Syslog (CEF) (Bloo extractor 115).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=threat where sourcename='FORTIWEB' and action='THREAT_DETECTED'
| duration 1h
| groupby srcip, dstip, threat
| select srcip, dstip, threat, count(*) as cnt
| having cnt > 10
is widely collected and almost never turned into detection content — it is usually
left as a vendor dashboard, so repeated targeting of one application by one source
goes unexamined.
Onboarding: FORTIWEB is ingested via Syslog (CEF) (Bloo extractor 115).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=threat where sourcename='FORTIWEB' and action='THREAT_DETECTED'
| duration 1h
| groupby srcip, dstip, threat
| select srcip, dstip, threat, count(*) as cnt
| having cnt > 10
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