Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
1,052 detections
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Detects execution of a bash reverse shell using /dev/tcp TCP redirection, a persistence/backdoor technique used by TA458 SpyPress operators on compromised webmail servers to connect back to C2 infrastructure.
Detects a suspicious sequence of events where a browser process (Firefox or Tor) is followed by a process escalation to root within 15 minutes on the same device. This pattern is indicative of a browser sandbox escape combined with kernel privilege escalation (e.g., exploitation of CVE-2026-10702 and CVE-2026-43499).
Detects installation or require-time execution of known-malicious SleeperGem RubyGems package versions (git_credential_manager 2.8.0-2.8.3, Dendreo 1.1.3-1.1.4, fastlane-plugin-run_tests_firebase_testlab 0.3.2) via gem install/bin/install command lines, and matches the same version strings when found in Gemfile.lock dependency manifests.
Detects command-line execution or application configuration referencing the disabling of TLS certificate verification, specifically using 'OpenSSL::SSL::VERIFY_NONE' or 'http.verify_mode'. This pattern is often indicative of malicious activity attempting to bypass secure communication validation, such as in supply chain attacks involving compromised dependencies or backdoors.
Detects the creation of an app-specific password named 'ZimbraWeb' using the CreateAppSpecificPasswordRequest SOAP command in Zimbra logs. This technique is used to maintain persistent access to mailboxes while bypassing multi-factor authentication (MFA).
Detects execution, chmod, or invocation of the fuckaliyun.sh script used to disable Alibaba Cloud's Cloud Shield/Yundun host security monitoring agent, plus the associated iptables install added by JadeProx's modified variant of the script. Requires an actual execution context (direct invocation, chmod +x, or a bash/sh interpreter with the script as an argument or parent process) rather than any incidental string reference to 'fuckaliyun'.
Detects execution, chmod, or invocation of the fuckaliyun.sh script used to disable Alibaba Cloud's Cloud Shield/Yundun host security monitoring agent, plus the associated iptables install added by JadeProx's modified variant of the script. Requires an actual execution context (direct invocation, chmod +x, or a bash/sh interpreter with the script as an argument or parent process) rather than any incidental string reference to 'fuckaliyun'.
Detects SleeperGem RubyGems supply chain artifacts: hardcoded Forgejo C2 reference in gem Ruby source, the git-credential-manager binary dropped under the hidden gcm path, and supporting deploy.sh/persistence indicators (ping6 backdoor, systemd/cron service under the git-credential-manager name)
Detects command-line execution or application configuration referencing the disabling of TLS certificate verification, specifically using 'OpenSSL::SSL::VERIFY_NONE' or 'http.verify_mode'. This pattern is often indicative of malicious activity attempting to bypass secure communication validation, such as in supply chain attacks involving compromised dependencies or backdoors.
Detects PHP process execution invoking fsockopen() to establish an outbound reverse shell connection, consistent with SpyPress backdoor persistence mechanisms deployed by TA458 on compromised Roundcube webmail servers.
Detects HPC GPU and SLURM reconnaissance (nvidia-smi/squeue) run together or spawned from a Python parent process, consistent with the mrmustard stealer's environment-profiling behavior.
Detects anomalous SOAP requests to 'GetScratchCodesRequest' within the 'zimbraSync' or 'zimbraAccount' namespaces in Zimbra logs. This activity is indicative of credential harvesting attempts, specifically the exfiltration of 2FA recovery scratch codes, often associated with the ZimReaper/Ulej payload used by threat actors.
Detects cloning and building xmrig-proxy from source (git clone + cmake/make), used by JadeProx operators to relay cryptomining traffic from compromised hosts behind a single mining pool connection. Build commands must specifically reference the xmrig-proxy repository or directory to reduce false positives from generic development builds.
Detects the execution of sendmail via a shell (sh, bash, dash) spawned by a web server process (Apache, Nginx, httpd) where the process working directory matches the wp2shell plugin pattern (wp2shell_<hex>). This is indicative of remote code execution or web shell activity associated with the wp2shell vulnerability, where the attacker uses sendmail for exfiltration or command output delivery.
Detects installation or require-time execution of known-malicious SleeperGem RubyGems package versions (git_credential_manager 2.8.0-2.8.3, Dendreo 1.1.3-1.1.4, fastlane-plugin-run_tests_firebase_testlab 0.3.2) via gem install/bin/install command lines, and matches the same version strings when found in Gemfile.lock dependency manifests.
Detects installation or require-time execution of known-malicious SleeperGem RubyGems package versions (git_credential_manager 2.8.0-2.8.3, Dendreo 1.1.3-1.1.4, fastlane-plugin-run_tests_firebase_testlab 0.3.2) via gem install/bin/install command lines, and matches the same version strings when found in Gemfile.lock dependency manifests.
Detects host reconnaissance commands (e.g., pip freeze, id, hostname -I) spawned by processes whose command line references the malicious 'mrmustard' Python package. This links discovery activity directly to the context of the supply chain compromise.
This rule detects potentially unauthorized content injection within Redis or Memcached application logs. It monitors for specific keywords indicating WordPress post data ('WP_Post') being processed by these caching services, which is often an indicator of object injection or application-level exploitation attempts aimed at manipulating application data.
Detects cloning and building xmrig-proxy from source (git clone + cmake/make), used by JadeProx operators to relay cryptomining traffic from compromised hosts behind a single mining pool connection. Build commands must specifically reference the xmrig-proxy repository or directory to reduce false positives from generic development builds.
Detects creation or modification of a shell profile (.bashrc/.zshrc/etc.) containing the exact 'tensorflow hardware compatibility check' marker used by the mrmustard stealer to disguise its persistence hook.
Detects the mrmustard stealer's base64+XOR C2 endpoint deobfuscation routine, keyed on the 'tf_compat_v2' string combined with its decode-call markers.
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