Odd FTP traffic

[Russell.Butturini at Healthways.com (Butturini, Russell)]

Curious if anyone else on the list has seen this.  For the last two days, I am seeing some bizarre looking buffer 
overflow attempts against one of my FTP servers from an IP in Vietnam.  The IPS is catching them as they're triggering 
the FTP PASS Suspicious Length signature.  They don't appear to be happening on regular intervals, which makes me doubt 
automation, but I'm curious if it's some kind of new zero day that's floating around.  If it is automated, this isn't 
the type of thing I've ever seen bots try before.  I've pasted a snippet of the IPS event below where the password is 
being sent.  Anybody else seen this?

a: 0000  61 74 6f 72 0d 0a 50 41  53 53 20 31 71 61 32 77  ator..PASS 1qa2w
Data: 0010  73 33 65 64 34 72 66 35  74 67 36 79 68 37 75 6a  s3ed4rf5tg6yh7uj
Data: 0020  38 69 6b 31 71 61 32 77  73 33 65 64 34 72 66 35  8ik1qa2ws3ed4rf5
Data: 0030  74 67 36 79 68 37 75 6a  38 69 6b 0d 0a           tg6yh7uj8ik..



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