On-Demand scan from the contextmenu

Discussion in 'ESET NOD32 Antivirus' started by theTemest, Jan 26, 2011.

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  1. theTemest

    theTemest Registered Member

    Jan 26, 2011
    Peoria, AZ.
    Good Morning-

    Windows Vista Home Premium (32-bit) SP2
    ESET NOD32 version 4.0.474.0

    I just downloaded a sceensaver. Knowing how notorious these type of sites are for delivering some type malware I wanted to check the download before installing. I 'Right Clicked' the .exe file and clicked 'Scan with ESET NOD32 Antivirus". The On-Demand scan showed 1 file scanned and no infections. However, when I opened the .exe to install I received the NOD32 popup window with the "Warning: Potential threat found" message. I deleted the file.
    Of what value is the On-Demand Scan via the context menu, or should I ask, what exactly does the On-Demand scan identify?

    Thank you in advance.
  2. DrewD

    DrewD Eset Staff Account

    Feb 19, 2010
    Certain files may have compressed encrypted components that are not able to be scanned until they are decompressed in memory, which is where the threat was most likely detected by the ESET realtime scanner.

    This is by design, in order to deter reverse engineering, as well as to obfuscate the contents.
  3. Marcos

    Marcos Eset Staff Account

    Nov 22, 2002
    Hard to say what happened without knowing your configuration and checking the file you executed.
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