Sensitive Files Compression

Identifies the use of a compression utility to collect known files containing sensitive information, such as credentials and system configurations.

Rule type: query

Rule indices:

auditbeat-*
logs-endpoint.events.*

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:

https://www.trendmicro.com/en_ca/research/20/l/teamtnt-now-deploying-ddos-capable-irc-bot-tntbotinger.html

Tags:

Elastic
Host
Linux
Threat Detection
Collection
Credential Access

Version: 101

Rule authors:

Elastic

Rule license: Elastic License v2

Rule query

edit

event.category:process and event.type:start and
  process.name:(zip or tar or gzip or hdiutil or 7z) and
  process.args:
    (
      /root/.ssh/id_rsa or
      /root/.ssh/id_rsa.pub or
      /root/.ssh/id_ed25519 or
      /root/.ssh/id_ed25519.pub or
      /root/.ssh/authorized_keys or
      /root/.ssh/authorized_keys2 or
      /root/.ssh/known_hosts or
      /root/.bash_history or
      /etc/hosts or
      /home/*/.ssh/id_rsa or
      /home/*/.ssh/id_rsa.pub or
      /home/*/.ssh/id_ed25519 or
      /home/*/.ssh/id_ed25519.pub or
      /home/*/.ssh/authorized_keys or
      /home/*/.ssh/authorized_keys2 or
      /home/*/.ssh/known_hosts or
      /home/*/.bash_history or
      /root/.aws/credentials or
      /root/.aws/config or
      /home/*/.aws/credentials or
      /home/*/.aws/config or
      /root/.docker/config.json or
      /home/*/.docker/config.json or
      /etc/group or
      /etc/passwd or
      /etc/shadow or
      /etc/gshadow
    )

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Credential Access
- ID: TA0006
- Reference URL: https://attack.mitre.org/tactics/TA0006/
Technique:
- Name: Unsecured Credentials
- ID: T1552
- Reference URL: https://attack.mitre.org/techniques/T1552/
Sub-technique:
- Name: Credentials In Files
- ID: T1552.001
- Reference URL: https://attack.mitre.org/techniques/T1552/001/
Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
Technique:
- Name: Archive Collected Data
- ID: T1560
- Reference URL: https://attack.mitre.org/techniques/T1560/
Sub-technique:
- Name: Archive via Utility
- ID: T1560.001
- Reference URL: https://attack.mitre.org/techniques/T1560/001/

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