Rule Category

FILE-IDENTIFY -- Snort has detecte File Type indicators associated with packet data, which it will use to facilitate a flowbit, a method of stringing rules together. In a flowbit, one rule examines packets for file type indications, which it uses to switch rules pertaining to that file type from a dormant to active state in order to process the appropriate packets. File-type rules stay dormant to prevent alerts on innocent traffic. That same traffic, when contained in, for instance, a .doc file attached to an email, might be a threat and should be scanned.

Alert Message

FILE-IDENTIFY Microsoft asf file magic detected

Rule Explanation

This rule does not generate an event. It is used in conjunction with other rules to either reduce the possibility of false positives from occurring or to track the state of a connection. Impact: None. Details: This rule does not generate an event. It is used in conjunction with other rules to either reduce the possibility of false positives from occurring or to track the state of a connection. This rule is used by the sid(s) . Ease of Attack: NA

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

Additional Links

Rule Vulnerability

CVE Additional Information