I was analysing Lab01-02.exe from Practical Malware Analysis book, the exe is packed with upx, since it showed UPX0, 1, 2 in the header section when analyzed with PEview, but when I open the same exe with PE Explorer is showed the regular header section (.txt .data ... ) Dose PE Explorer unpack packed files before analyze it? what if I want to view the packed exe with PE Explorer?

  • Use another software? PEview or CFF Explorer come to mind May 29, 2017 at 21:32
  • PE Explorer ships with the UPX Unpacker plug-in see this heaventools.com/PE_Explorer_plug-ins.htm, to disable the UPX Unpacker plug-in from the Tools menu Select Plug-in Manager, now Select UPX Unpacker plug-in and set the value to zero to disables the plug-in and marks it red.
    – adrián
    May 30, 2017 at 0:28
  • @Dillinur: Thanx, I don't know CFF, but I'll give it a try May 30, 2017 at 14:59
  • @adrián Perfect, why u didn't post it as an answer? May 30, 2017 at 14:59

1 Answer 1


The product overview of PE Explorer states in several places that it will load PE files that are compressed with UPX.

Open UPX-, Upack- and NsPack-compressed files seamlessly in PE Explorer, without long workarounds

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