diff --git a/rules/linux/credential_access_collection_sensitive_files.toml b/rules/linux/credential_access_collection_sensitive_files.toml new file mode 100644 index 000000000..8b99572ca --- /dev/null +++ b/rules/linux/credential_access_collection_sensitive_files.toml @@ -0,0 +1,95 @@ +[metadata] +creation_date = "2020/12/22" +maturity = "production" +updated_date = "2020/12/22" + +[rule] +author = ["Elastic"] +description = """ +Identifies the use of a compression utility to collect known files containing sensitive information, such as credentials +and system configurations. +""" +from = "now-9m" +index = ["auditbeat-*", "logs-endpoint.events.*"] +language = "kuery" +license = "Elastic License" +name = "Sensitive Files Compression" +references = [ + "https://www.trendmicro.com/en_ca/research/20/l/teamtnt-now-deploying-ddos-capable-irc-bot-tntbotinger.html", +] +risk_score = 47 +rule_id = "6b84d470-9036-4cc0-a27c-6d90bbfe81ab" +severity = "medium" +tags = ["Elastic", "Host", "Linux", "Threat Detection", "Collection", "Credential Access"] +type = "query" + +query = ''' +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 + ) +''' + + +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1552" +name = "Unsecured Credentials" +reference = "https://attack.mitre.org/techniques/T1552/" +[[rule.threat.technique.subtechnique]] +id = "T1552.001" +name = "Credentials In Files" +reference = "https://attack.mitre.org/techniques/T1552/001/" + + + +[rule.threat.tactic] +id = "TA0006" +name = "Credential Access" +reference = "https://attack.mitre.org/tactics/TA0006/" +[[rule.threat]] +framework = "MITRE ATT&CK" +[[rule.threat.technique]] +id = "T1560" +name = "Archive Collected Data" +reference = "https://attack.mitre.org/techniques/T1560/" +[[rule.threat.technique.subtechnique]] +id = "T1560.001" +name = "Archive via Utility" +reference = "https://attack.mitre.org/techniques/T1560/001/" + + + +[rule.threat.tactic] +id = "TA0009" +name = "Collection" +reference = "https://attack.mitre.org/tactics/TA0009/"