Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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Detects an adversary stopping or disabling the Linux audit daemon (auditd), the primary kernel-level activity logging subsystem on Linux.
Disabling auditd eliminates syscall-level telemetry including file access, process execution, and privilege escalation events.
Effectively attempting to blind the host's logging pipeline before further action.
Observed in: TeamTNT, Rocke cryptominer campaigns, post-exploitation frameworks (Metasploit, Sliver) during cleanup phases.
Disabling auditd eliminates syscall-level telemetry including file access, process execution, and privilege escalation events.
Effectively attempting to blind the host's logging pipeline before further action.
Observed in: TeamTNT, Rocke cryptominer campaigns, post-exploitation frameworks (Metasploit, Sliver) during cleanup phases.
Detects malicious Message of the Day scripts for persistence
Detects usage udev rules launching at jobs or cron jobs for persistence
This rule detects the execution of specific Node.js scripts associated with the StegaBin package campaign. It looks for 'node.exe' or 'node' processes executing command lines containing 'scripts/test/install.js' or 'vendor/scrypt-js/version.js'. The intent is to identify the initial phase of a malicious package installation chain, which could lead to further compromise.
Detects suspicious cron job executions or the execution of a potentially trojanized 'crontab' binary. Adversaries, as seen with malware like Perfctl, may replace or modify the 'crontab' utility to hide malicious scheduled tasks from administrators. This detection looks for common patterns of malicious cron jobs.
Detects the "EtherHiding" technique used by the FakeGit campaign. The malware queries a Polygon Mainnet smart contract via a public RPC node to resolve its current C2 server address. This rule looks for network connections to known blockchain RPC providers containing the specific function selectors used by the malware's V1 and V2 contracts.
Linux VNC Install
Sigma
Detects VNC-based lateral movement activities. Looking for the initial install
Detects trojanized cron binaries that hide malicious cron jobs, with indicators resembling Perfctl
Detects CL-UNK-1068's custom-compiled Fast Reverse Proxy (FRP) variant based on unique command-line artifacts.
Detects the creation or modification of udev rules that execute suspicious commands or scripts from unusual locations. Udev rules are used by the Linux kernel device manager to handle hardware events and can be abused for persistence.
Detects abuse of package manager hooks for persistence, by hijacking the package manager execution flow
This rule detects command-line access to cloud metadata services from utilities such as curl, wget, busybox, or python. It specifically looks for command lines containing IP addresses or hostnames commonly associated with cloud metadata endpoints (e.g., 169.254.169.254, metadata.google.internal, 100.100.100.200) or metadata paths (e.g., /latest/meta-data, /computeMetadata/v1/). This is a hunting rule designed to identify unusual process activity that might indicate a cloud-aware malware framework attempting to discover cloud environment details.
Detects scripts designed for container escape and host persistence
Detects usage udev rules launching at jobs or cron jobs for persistence
Detects malicious Message of the Day scripts being used for persistence, since these messages are ran at start time and will display to all users
This rule detects the execution of ELF binaries from user-writable directories within the home folder, specifically targeting paths containing '/.local/bin/'. It aims to identify potentially malicious programs, such as clipboard hijackers, that are dropped and launched by a user. The rule filters out common packaging paths like '/snap/' and '/flatpak/' to reduce false positives.
This rule detects trojanized Linux binaries, specifically targeting those that resemble Kaiji malware. The combination of these strings suggests a malicious binary with persistence and potential crypto-mining capabilities.
Detects malicious udev rules for persistence
Detects VNC-based lateral movement activities. East to West traffic
Detects network connections to the primary C2 IP and port (103.106.67.63:1244) used across all modules of the StegaBin infostealer toolkit. This specific IP and port combination is highly indicative of StegaBin activity.
Detects VNC-based activities. Looking for specific VNC processes
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