Multiple updates with same Malware

Discussion in 'ESET NOD32 Antivirus' started by aluminex, Jul 31, 2012.

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  1. aluminex

    aluminex Registered Member

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    I was curious as to why multiple updates contain the same definition for Win32/TrojanDownloader.Zortob.B?

    For instance, the signature for this piece of malware is included in update 7337, 7338, and 7339.

    Also, what is the number in parenethesis after the Malware name?

    http://go.eset.com/us/threat-center/threatsense-updates/page/2/



    Win32/TrojanDownloader.Zortob.B(47) 7339
    Win32/TrojanDownloader.Zortob.B(3) 7338
    Win32/TrojanDownloader.Zortob.B 7337

    What is the difference?
     
  2. Cudni

    Cudni Global Moderator

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    Probably a slight variant of the same family malware that merits separate detection
     
  3. Marcos

    Marcos Eset Staff Account

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    Nov 22, 2002
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    14,441
    Often the malware remains same, just the packer changes to avoid detection.
     
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