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TrojanDownloader:ASX/Wimad.BI

First posted on 19 April 2019.
Source: Microsoft

Aliases :

TrojanDownloader:ASX/Wimad.BI is also known as ASF/Wimad!generic, WMA/TrojanDownloader.GetCodec.Gen.

Explanation :

TrojanDownloader:ASX/Wimad is a detection for malicious Windows media files that are used in order to encourage users to download and execute arbitrary files on an affected machine. When opened with Windows Media Player, these malicious files open a particular URL in a web browser. Installation TrojanDownloader:ASX/Wimad.BI is a malicious Advanced Streaming Format (ASF) file, which when opened by Windows Media Player, urges a user to download and execute an arbitrary file.   In the wild, files detected as TrojanDownloader:ASX/Wimad.BI have been observed being distributed with file extensions such as .MP3 .ASF .WMA and .ASX. The file names used have been varied and enticing. At the time of writing Wimad.BI redirects to sites containing adult content; it is possible that some of these sites may contain requests to download and install malicious software.   We strongly suggest that users avoid downloading and executing any files when prompted by Windows Media Player upon opening streaming format files.   Analysis by Oleg Petrovsky

Last update 19 April 2019

 

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