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RegEx - Pattern Match

Not applicable

Hey everyone,

I'm attempting to build a pattern match for a custom vulnerability.  Here are the criteria:

  • File is always a random 24 character file with a '.exe' extension
  • First three characters are always 'e54'

I had the following regex built, but the PA doesn't like it for some reason.

(e54([a-zA-Z0-9]{21})\.exe)

It gives me some invalid character internal error.  Any thoughts?

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