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Attempted Private Key Access

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Attackers may try to access private keys, e.g. ssh, in order to gain further authenticated access to the environment.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Credential Access
  • Data Source: Elastic Defend
  • Rule Type: BBR

Version: 1

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where host.os.type == "windows" and event.type == "start" and process.args : ("*.pem*", "*.id_rsa*") and
  not process.executable : (
    "?:\\ProgramData\\Logishrd\\LogiOptions\\Software\\*\\LogiLuUpdater.exe",
    "?:\\Program Files\\Logi\\LogiBolt\\LogiBoltUpdater.exe",
    "?:\\Windows\\system32\\icacls.exe",
    "?:\\Program Files\\Splunk\\bin\\openssl.exe",
    "?:\\Program Files\\Elastic\\Agent\\data\\*\\components\\osqueryd.exe",
    "?:\\Windows\\System32\\OpenSSH\\*"
  )

Framework: MITRE ATT&CKTM

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