add December Newsletter (#171)

* Create 09192024.md

newsletter for MBC v3.2

* Update 09192024.md

* Update README.md

* Update 09192024.md

* Update 09192024.md

* Update 09192024.md

* Rename 09192024.md to 09242024.md

* Rename 09242024.md to 09232024.md

* Update README.md

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* Update README.md

ynewsletters/12092024.md

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+# <a name="faq"></a>Malware Behavior Catalog Newsletter # 
+**December 9, 2024**
+
+Hello everyone!
+
+Here are recent MBC developments:
+
+* Released [MBC 3.2](https://github.com/MBCProject/mbc-markdown/releases/tag/v3.2).
+* Released the [STIX 2.1 representation](https://github.com/MBCProject/mbc-stix2.1) for MBC 3.2, which is based on the [malware behavior extension](https://github.com/oasis-open/cti-stix-common-objects/tree/main/extension-definition-specifications/malware-behavior-8e9).
+* Updated the [visual representation](https://raw.githubusercontent.com/MBCProject/mbc-markdown/master/yfaq/mbc_matrix_with_ids.svg) of MBC.
+* Updated MBC-CAPE signature mappings/links (thanks @RazviOverflow!)
+* Added new method: Anti-Static Analysis::Disassembler Evasion::Fake Function (thanks @utkonos!)
+* Reviewed capa to identify mapping suggestions (none found).
+
+Please post questions or comments in [Discussions](https://github.com/MBCProject/mbc-markdown/discussions) on GitHub, or email us at mbc@mitre.org. Feedback is always appreciated! 

ynewsletters/README.md

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 ## <a name="faq"></a>Malware Behavior Catalog Newsletters ##
 
+<a href="./12092024.md">December 2024</a>
+
 <a href="./05012024.md">May 2024</a>
 
 <a href="./12182023.md">December 2023</a>