{
  "type": "attack-pattern",
  "spec_version": "2.1",
  "id": "attack-pattern--e51137a5-1cdc-499e-911a-abaedaa5ac86",
  "created": "2020-02-10T20:47:10.082Z",
  "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "revoked": false,
  "external_references": [
    {
      "source_name": "mitre-attack",
      "url": "https://attack.mitre.org/techniques/T1036/006",
      "external_id": "T1036.006"
    },
    {
      "source_name": "Mac Backdoors are back",
      "description": "Dan Goodin. (2016, July 6). After hiatus, in-the-wild Mac backdoors are suddenly back. Retrieved July 8, 2017.",
      "url": "https://arstechnica.com/security/2016/07/after-hiatus-in-the-wild-mac-backdoors-are-suddenly-back/"
    }
  ],
  "object_marking_refs": [
    "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168"
  ],
  "modified": "2026-05-12T15:12:00.723Z",
  "name": "Space after Filename",
  "description": "Adversaries can hide a program's true filetype by changing the extension of a file. With certain file types (specifically this does not work with .app extensions), appending a space to the end of a filename will change how the file is processed by the operating system.\n\nFor example, if there is a Mach-O executable file called <code>evil.bin</code>, when it is double clicked by a user, it will launch Terminal.app and execute. If this file is renamed to <code>evil.txt</code>, then when double clicked by a user, it will launch with the default text editing application (not executing the binary). However, if the file is renamed to <code>evil.txt </code> (note the space at the end), then when double clicked by a user, the true file type is determined by the OS and handled appropriately and the binary will be executed (Citation: Mac Backdoors are back).\n\nAdversaries can use this feature to trick users into double clicking benign-looking files of any format and ultimately executing something malicious.",
  "kill_chain_phases": [
    {
      "kill_chain_name": "mitre-attack",
      "phase_name": "stealth"
    }
  ],
  "x_mitre_attack_spec_version": "3.3.0",
  "x_mitre_contributors": [
    "Erye Hernandez, Palo Alto Networks"
  ],
  "x_mitre_deprecated": false,
  "x_mitre_domains": [
    "enterprise-attack"
  ],
  "x_mitre_is_subtechnique": true,
  "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
  "x_mitre_platforms": [
    "Linux",
    "macOS"
  ],
  "x_mitre_version": "2.0"
}