I have a md5 based signature, winnow.malware.2015, that I created from a file ./malware/style25.dat-4mmrTv The signature is:

23848f3f080237b7e2d2313496f4c00f:3680:winnow.malware.2015

I can see its in my clam sigs by:

$ sigtool --list-sigs=/usr/local/share/clamav/winnow_malware.hdb | grep "winnow.malware.2015"
winnow.malware.2015

Yet when I check it clamscan does not detect (using 0.95.3)

$ clamscan ./malware/style25.dat-4mmrTv
./malware/style25.dat-4mmrTv: OK

I even checked my signature using sigtool and my signature matches:

sigtool --md5 ./malware/style25.dat-4mmrTv
23848f3f080237b7e2d2313496f4c00f:3680:./malware/style25.dat-4mmrTv


Any ideas?  I have a couple more like this in my DB.

Tom

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