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IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [7.16] ›Downloadable rule update v7.16.4

Security Software Discovery via Grep

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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

Security Software Discovery via Grep

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Identifies the use of the grep command to discover known third-party macOS and Linux security tools, such as antivirus or host firewall details.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*
  • auditbeat-*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Elastic
  • Host
  • macOS
  • Linux
  • Threat Detection
  • Discovery

Version: 6

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

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## Setup

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.

Rule query

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process where event.type == "start" and
process.name : "grep" and user.id != "0" and
 not process.parent.executable : "/Library/Application Support/*" and
   process.args :
         ("Little Snitch*",
          "Avast*",
          "Avira*",
          "ESET*",
          "BlockBlock*",
          "360Sec*",
          "LuLu*",
          "KnockKnock*",
          "kav",
          "KIS",
          "RTProtectionDaemon*",
          "Malware*",
          "VShieldScanner*",
          "WebProtection*",
          "webinspectord*",
          "McAfee*",
          "isecespd*",
          "macmnsvc*",
          "masvc*",
          "kesl*",
          "avscan*",
          "guard*",
          "rtvscand*",
          "symcfgd*",
          "scmdaemon*",
          "symantec*",
          "sophos*",
          "osquery*",
          "elastic-endpoint*"
          ) and
   not (process.args : "Avast" and process.args : "Passwords")

Framework: MITRE ATT&CKTM

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