Security Software Discovery via Grep
editSecurity Software Discovery via Grep
editIdentifies 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: 3
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Config 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
editprocess 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
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Software Discovery
- ID: T1518
- Reference URL: https://attack.mitre.org/techniques/T1518/
-
Sub-technique:
- Name: Security Software Discovery
- ID: T1518.001
- Reference URL: https://attack.mitre.org/techniques/T1518/001/