{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","favicon":"https://feed.craftedsignal.io/favicon-32x32.png","feed_url":"https://feed.craftedsignal.io/tags/attack.t1059.004/feed.json","home_page_url":"https://feed.craftedsignal.io/","icon":"https://feed.craftedsignal.io/apple-touch-icon.png","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":[],"_cs_severities":["high"],"_cs_tags":["attack.execution","attack.t1059.004","linux"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eThe env command, typically used to set or modify environment variables, can be used to invoke a shell. This technique is documented in GTFOBins as a method to spawn a shell.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cp\u003eDeploy the provided Sigma rule to detect the use of the env command to invoke a shell. Monitor for legitimate system operations that may trigger this alert, such as Github operations (e.g., ghe-backup).\u003c/p\u003e\n","date_modified":"2026-11-10T16:12:48Z","date_published":"2026-11-10T16:12:48Z","id":"https://feed.craftedsignal.io/briefs/2026-11-linux-env-shell/","summary":"The env command can be used to invoke a system shell, which may indicate an attempt to bypass restricted environments, escalate privileges, or execute arbitrary commands.","title":"Linux: Shell Invocation via Env Command","url":"https://feed.craftedsignal.io/briefs/2026-11-linux-env-shell/"}],"language":"en","title":"CraftedSignal Threat Feed - Attack.t1059.004","version":"https://jsonfeed.org/version/1.1"}