diff --git a/malware-analysis_ref_and_memo.md b/malware-analysis_ref_and_memo.md
index fd50245..4031893 100644
--- a/malware-analysis_ref_and_memo.md
+++ b/malware-analysis_ref_and_memo.md
@@ -28,7 +28,7 @@ DFIR,マルウェア解析，OSINTに特化したUbuntuベースのディスト
 |[Cutter](https://github.com/radareorg/cutter)|〇|r2dec,r2ghidra|native<br>gdb<br>windbg<br>etc.|[INTRO TO CUTTER FOR MALWARE ANALYSIS(2019-03)](https://malwology.com/2019/03/14/intro-to-cutter-for-malware-analysis/)<br>[megabeets.net](https://www.megabeets.net/?s=cutter)<br>[Cutter: Presenting r2ghidra Decompiler,r2con 2019](https://www.youtube.com/watch?v=eHtMiezr7l8&list=LLTk6-mAiILdt3V27uab14LA&index=8&t=0s)|||||
 |[Ghidra](https://ghidra-sre.org/)|〇|〇||[Reversing WannaCry Part 2 - Diving into the malware with #Ghidra,youtube](https://www.youtube.com/watch?v=Q90uZS3taG0)<br>[cheetsheet](https://www.oldergeeks.com/downloads/file.php?id=2767)<br>[Scripting in Ghidra, Patching MacOS Image2Icon](https://duraki.github.io/posts/o/20200227-ghidra-scripting-image2icon.html)<br>[Intro to Reverse Engineering](https://medium.com/swlh/intro-to-reverse-engineering-45b38370384)<br>[Intro to Reverse Engineering, Part 2](https://medium.com/swlh/intro-to-reverse-engineering-part-2-4087a70104e9)|||||
 |[x64/x32dbg](https://x64dbg.com/#start)|〇|Snowman|〇||||||
-|[WinDbg](https://docs.microsoft.com/ja-jp/windows-hardware/drivers/debugger/debugger-download-tools)|〇||〇|[Memory Analysis Skillbuilder Series: Skeleton Key Deep Dive with WinDbg](https://www.youtube.com/watch?v=pdkOJMBmckQ&feature=youtu.be)|||||
+|[WinDbg](https://docs.microsoft.com/ja-jp/windows-hardware/drivers/debugger/debugger-download-tools)|〇||〇|[Memory Analysis Skillbuilder Series: Skeleton Key Deep Dive with WinDbg](https://www.youtube.com/watch?v=pdkOJMBmckQ&feature=youtu.be)<br>[WinDbg — the Fun Way: Part 2](https://medium.com/@yardenshafir2/windbg-the-fun-way-part-2-7a904cba5435)|||||
 |GDB|〇||〇||||||
 |objdump|〇|||
 |[Snowman](https://derevenets.com/)||〇|||||||