This question already has an answer here:

How/Where can i get variants of a malware ? The only thing that concerns is that the variants must be a continuous update of the previous one

marked as duplicate by 0xec, Guntram Blohm, peter ferrie, perror, jvoisin Jan 5 '15 at 4:00

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  • No what I meant was "updated variants" of a single malware where as the previous question consists of malware repo's based on their MD5 values. – LifeinVoid Jan 3 '15 at 4:46

Have you tried AVcaesar @ malware.lu?

Link: https://avcaesar.malware.lu

The Kernelmode.info forum usually hosts malware samples too.

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