Credential Access (TA0006)(external, opens in a new tab or window)
text code block:from logs-endpoint.events.process-* metadata _id, _version, _index | where host.os.type in ("linux", "macos") and event.category == "process" and process.name in ("grep", "egrep") and (to_lower(process.command_line) like "* -r*" or to_lower(process.command_line) like "*--recursive*") and ( process.command_line like "*password*" or process.command_line like "*passwd*" or process.command_line like "*pwd*" or process.command_line like "*secret*" or process.command_line like "*token*" or process.command_line like "*apikey*" or process.command_line like "*api_key*" or process.command_line like "*api.key*" or process.command_line like "*access_key*" or process.command_line like "*private_key*" or process.command_line like "*client_secret*" or process.command_line like "*credential*" or process.command_line like "*auth*" or process.command_line like "*bearer*" or process.command_line like "*BEGIN*PRIVATE*KEY*" or process.command_line like "*ssh-rsa*" or process.command_line like "*ghp_*" or process.command_line like "*github_pat*" or process.command_line like "*xoxb-*" or process.command_line like "*hooks.slack.com*" or process.command_line like "*discord.com/api/webhooks*" or process.command_line like "*/.aws/*" or process.command_line like "*/.git/*" or process.command_line like "*/.env*" ) and (process.parent.command_line is null or not (to_lower(process.parent.command_line) like "*shell-snapshots*" and process.parent.name in ("bash", "sh", "zsh"))) | eval Esql.time_bucket = date_trunc(1 minute, @timestamp) | stats Esql.unique_cmd = count_distinct(process.command_line), Esql.cmd_values = values(process.command_line), Esql.pcmd_values = values(process.parent.command_line) by process.name, host.id, host.name, agent.id, process.parent.name, user.name, Esql.time_bucket | where Esql.unique_cmd >= 3 | keep host.id, host.name, agent.id, user.name, process.parent.name, Esql.*
Install detection rules in Elastic Security
Detect Potential Credential Discovery via Recursive Grep in the Elastic Security detection engine by installing this rule into your Elastic Stack.
To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).