FILE-EXECUTABLE -- Snort detected traffic targeting vulnerabilites that are found in or delivered through executable files, regardless of platform. In those instances, Snort is able to correct traffic that has been altered.
FILE-EXECUTABLE Microsoft Windows Defender buffer overflow attempt
The rule tries to find the shellcode or offsets that are used by the exploit to calculate the Windows API offsets.
What To Look For
The rule detects an executable then might try to exploit CVE-2021-1647 in MS Windows defender.
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Tactic: Initial Access
Technique: Spearphishing Attachment
For reference, see the MITRE ATT&CK vulnerability types here:
Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.
CVE Additional Information