FILE-OFFICE -- Snort detected traffic targeting vulnerabilities in files belonging to the Microsoft Office suite of software (Excel, PowerPoint, Word, Visio, Access, Outlook, etc.).
FILE-OFFICE Microsoft MSHTML ActiveX control bypass attempt
This rule is looking for characteristics of directory traversal in the context of ActiveX control bypass in order to download malicious files.
This rule will alert when an attempt to use malicious javascript to bypass ActiveX controls in the context of MS Office is detected.
No public information
No known false positives
Cisco Talos Intelligence Group
No rule groups
Remote File Inclusion
Remote File Inclusion (RFI) attacks occur when a webserver takes a file crafted by an attacker as input and runs or stores it in an unsafe manner. For instance, the webserver could accept an image file that is actually code, then call it to execute after uploading. RFI attacks happen on web applications that dynamically include external files or scripts. A successful RFI can lead to data leaks, remote code execution, or cross site scripting. Avoid dynamic inclusion of user input files, or whitelist files that may be included. Keep the PHP allow_url_include option set to off; this will not protect against Local File Inclusion attacks.
CVE-2021-40444 |
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Tactic: Initial Access
Technique: Trusted Relationship
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org
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