Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This rule detects suspicious driver loading from user-writable paths, kernel driver service creation, disabling of driver signing, loading of Linux kernel modules, and the usage of LD_PRELOAD for rootkit functionality.
Detects configuration changes on the Zimbra server. Mail server configuration
controls routing, authentication and logging; a change can create a delivery path,
weaken authentication, or stop the server recording what happens next.
Onboarding: ZIMBRA is ingested via Syslog (Bloo extractor 123).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=configuration where sourcename='ZIMBRA' and action='CONFIGURATION_CHANGED'
| groupby user, config
controls routing, authentication and logging; a change can create a delivery path,
weaken authentication, or stop the server recording what happens next.
Onboarding: ZIMBRA is ingested via Syslog (Bloo extractor 123).
Integration guide: https://bloo.io/docs/hypercloud/syslog-connector
BQL (Bloo Query Language):
stream=configuration where sourcename='ZIMBRA' and action='CONFIGURATION_CHANGED'
| groupby user, config
Detects network, DNS, email, and URL click events matching known IOC domains associated with AdFection, Candiru, and Discover-Tech threat intelligence reports.
Detects the creation of WordPress administrator accounts using MySQL or WP-CLI command-line tools on hosts, specifically looking for specific username prefixes or email domains associated with suspicious activities.
Detects hosts with the trojanized version 3.0.123 of the Rank Math PRO WordPress plugin distributed in October 2026. It correlates software inventory, file events, command-line process events, and network connections to identify affected packages, installation activity, and C2 communications.
Detects HTTP requests to the PeopleSoft PSEMHUB servlet using alternate
encodings such as the percent-encoded path %50SEMHUB. ShinyHunters/UNC6240 mass-exploit
Oracle PeopleSoft CVE-2026-35273 against internet-facing systems and encode the path to
defeat literal WAF signatures for /PSEMHUB/ (T1190, T1027).
encodings such as the percent-encoded path %50SEMHUB. ShinyHunters/UNC6240 mass-exploit
Oracle PeopleSoft CVE-2026-35273 against internet-facing systems and encode the path to
defeat literal WAF signatures for /PSEMHUB/ (T1190, T1027).
Detects HTTP requests to the WordPress REST batch endpoint (/wp-json/batch/v1 or /?rest_route=/batch/v1) carrying user agents associated with public wp2shell proof-of-concept tooling. This targets the pre-auth route confusion and SQL injection primitive in WordPress Core (CVE-2026-63030, CVE-2026-60137) that leads to full remote code execution.
Detects the execution of rm commands using force flags to delete multiple critical appliance, system, and web server log files simultaneously on Linux hosts.
Detects potential Linux privilege escalation and persistence activities by monitoring for the creation of persistence scripts in post_boot.d, modifications to the sudoers.template file appending NOPASSWD, or system configuration rebuilds shortly after sudoers template changes.
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'.
Detects endpoint execution of specific known brute-force scripts and tools (such as ssh_brute.py, brute3.py, auto_login.py, etc.) using Python or shell interpreters, correlated with a high outbound network connection fan-out (50 or more distinct target IPs) from the same process.
Detects coordinated malicious activity on VMware ESXi hosts indicative of ransomware attacks. The rule correlates multiple suspicious events within a 10-minute window, including the appearance of known ESXi ransom notes/banners, mass datastore file renames or encryption extensions, virtual machine stop events, and snapshot deletions designed to prevent recovery.
Detects virtualization management monitor (VMM) processes such as QEMU or Firecracker directly spawning an interactive shell, script interpreter, or network utility as the root user. This behavior is highly anomalous and may indicate a guest-to-host escape leading to remote code execution on the host.
Detects Linux hosts running vulnerable kernel versions older than the fixed builds for CVE-2026-99999 (PwnEscape) across enterprise Linux branches (el8, el9, el10).
Detects an inbound QUIC/UDP port 443 burst targeting a Bun process (bun.exe or bun) from external IP addresses, followed by the process going completely silent on the network within a short time window. This pattern correlates with potential exploitation or denial-of-service conditions involving network parsing anomalies.
Detects the presence of vulnerable Wireshark software versions susceptible to CVE-2025-13945 and detects mitmproxy instances running without HTTP/3 disabled via the --set http3=false command line argument.
Detects PHP script execution interacting with the Microsoft Exchange Web Services (EWS) API, which may indicate web shell usage, email collection, or exfiltration activity.
Detects the deployment or creation of containers (via Docker, Podman, Nerdctl, Crictl, or Kubectl) with elevated risk flags such as privileged mode, host namespace sharing, root mounts, docker socket access, or initiated from web application parent processes.
Detects suspicious DNS queries to external service interaction domains often used for out-of-band interactions after successful RCE
Detects potential Linux privilege escalation and persistence activities by monitoring for the creation of persistence scripts in post_boot.d, modifications to the sudoers.template file appending NOPASSWD, or system configuration rebuilds shortly after sudoers template changes.
Detects a sequence of events on a single device where a shell (/bin/sh, /bin/bash, etc.) is copied to a path involving /usr/bin/dbus-authd using cp or busybox, followed by changing ownership to root, and subsequently setting the SUID permission bit within a 10-minute window.
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