![]() ![]() ![]() The shellcode can be discovered in SWF file as an embedded image file with wrong image size. Adobe has officially discontinued Flash, meaning it's no longer being developed or supported. These animation files have a history of being used for online games played within a web browser. This exploit uses a vulnerability of Adobe Flash Player, built on incorrect handling of DefineSceneAndFrameLabelData tag with negative value of SceneCount parameter. SWF file (pronounced as 'Swiff') is a Shockwave Flash Movie file created by an Adobe program that can hold interactive text and graphics. The files were already detected by our engine as but they were new variations and were not in malware collection. I have checked all the possible versions and found 6 different. Next up, we have Quick Flash Player on our list of the best Adobe Flash alternatives in 2023. SWF file was not due to the absence of malicious code on the server, but due to the different Adobe Flash Player plugin that was used in the sandbox. ![]() If the 4561.swf file was tested on an automated sandbox a researcher may have not notice the fact that unavailability of the second. The server replied with famous ERROR 404: “File Not Found”. In the case above it tried to download “WIN 9,0,12,0i.swf” file. After that 4561.SWF tries to download and run another. The $version variable evaluates to something like “WIN 9,0,12,0”, which is short platform name, version and revision numbers of Adobe Flash Player plugin. ![]()
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