Adversaries may use trusted scripts, often signed with certificates, to proxy the execution of malicious files. Several Microsoft signed scripts that have been downloaded from Microsoft or are default on Windows installations can be used to proxy execution of other files.(Citation: LOLBAS Project) This behavior may be abused by adversaries to execute malicious files that could bypass application control and signature validation on systems.(Citation: GitHub Ultimate AppLocker Bypass List)
View in MITRE ATT&CK®| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| CIS-2.7 | Allowlist Authorized Scripts | mitigates | T1216 | System Script Proxy Execution |
Comments
If script payload execution is enforced regardless of invoking binary, proxy-based script execution is reduced.
References
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| Capability ID | Capability Description | Mapping Type | ATT&CK ID | ATT&CK Name | Notes |
|---|---|---|---|---|---|
| action.hacking.variety.Abuse of functionality | Abuse of functionality. | related-to | T1216 | System Script Proxy Execution | |
| action.malware.variety.C2 | Malware creates Command and Control capability for malware. Child of 'Backdoor or C2'. | related-to | T1216 | System Script Proxy Execution |
| Technique ID | Technique Name | Number of Mappings |
|---|---|---|
| T1216.001 | PubPrn | 2 |
| T1216.002 | SyncAppvPublishingServer | 2 |