CmdID

CmdID / Rules / Windows

PUA - Restic Backup Tool Execution

A Sigma rule for process creation on Windows, by Nounou Mbeiri, Swachchhanda Shrawan Poudel (Nextron Systems).

high 2 ATT&CK techniques

What it looks for

its detection, as SigmaHQ writes it
detection:
  selection_restic:
    CommandLine|contains:
      - 'sftp:'
      - 'rest:http'
      - 's3:s3.'
      - 's3.http'
      - 'azure:'
      - ' gs:'
      - 'rclone:'
      - 'swift:'
      - ' b2:'
    CommandLine|contains|all:
      - ' init '
      - ' -r '
  selection_specific:
    - CommandLine|contains|all:
        - '--password-file'
        - 'init'
        - ' -r '
    - CommandLine|contains|all:
        - '--use-fs-snapshot'
        - 'backup'
        - ' -r '
  condition: 1 of selection_*

The rule’s detection, its selections and fields in order of name. The whole rule, with its references and false positives, is on SigmaHQ, by Nounou Mbeiri, Swachchhanda Shrawan Poudel (Nextron Systems), under the Detection Rule License 1.1. CmdID evaluates it on a command line alone: a test on what a command line cannot show, such as the parent process or the user, is not met.

None of the everyday examples and documented commands on CmdID’s program pages trips it. To see whether a command line does, paste it into CmdID.

ATT&CK

the techniques it is tagged with
T1048Exfiltration Over Alternative Protocol
T1567.002Exfiltration Over Web Service: Exfiltration to Cloud Storage