{"id":"759d0d51-bc99-4b5e-9add-8f5b2c8e7512","title":"Creation Of An User Account","description":"Detects the creation of a new user account. Such accounts may be used for persistence that do not require persistent remote access tools to be deployed on the system.","author":"Marie Euler, Pawel Mazur","status":"test","level":"medium","date":"2020-05-18","modified":"2022-12-20","tags":["attack.t1136.001","attack.persistence"],"technique_ids":["T1136.001"],"logsource":{"product":"linux","service":"auditd"},"falsepositives":["Admin activity"],"references":["https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/sec-understanding_audit_log_files","https://access.redhat.com/articles/4409591#audit-record-types-2","https://www.youtube.com/watch?v=VmvY5SQm5-Y&ab_channel=M45C07"],"source_path":"rules/linux/auditd/syscall/lnx_auditd_create_account.yml","source_sha256":"b65ae8b342d4f0ec2603a65cda8a6762dad58a8ecdc8fd0ddf097e885d6cde4f","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/linux/auditd/syscall/lnx_auditd_create_account.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Creation Of An User Account\nid: 759d0d51-bc99-4b5e-9add-8f5b2c8e7512\nstatus: test\ndescription: Detects the creation of a new user account. Such accounts may be used for persistence that do not require persistent remote access tools to be deployed on the system.\nreferences:\n    - https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/security_guide/sec-understanding_audit_log_files\n    - https://access.redhat.com/articles/4409591#audit-record-types-2\n    - https://www.youtube.com/watch?v=VmvY5SQm5-Y&ab_channel=M45C07\nauthor: Marie Euler, Pawel Mazur\ndate: 2020-05-18\nmodified: 2022-12-20\ntags:\n    - attack.t1136.001\n    - attack.persistence\nlogsource:\n    product: linux\n    service: auditd\ndetection:\n    selection_syscall_record_type:\n        type: 'SYSCALL'\n        exe|endswith: '/useradd'\n    selection_add_user_record_type:\n        type: 'ADD_USER' # This is logged without having to configure audit rules on both Ubuntu and Centos\n    condition: 1 of selection_*\nfalsepositives:\n    - Admin activity\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1136.001","id":"T1136.001","name":"Local Account","page":"techniques/enterprise/T1136.001/"}],"data_path":"data/detection-rules/759d0d51-bc99-4b5e-9add-8f5b2c8e7512.json","kind":"sigma"}