[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: unpacking UPX or PE-packed binaries
Blue Boar wrote:
Just interested in how AV R&D companies unpack worms with complex UPX
The modified UPX packing is a pretty small change usually. Compare one
with a standard UPX header for the same version. There are a variety of
unpackers out there.
[Hey BB, 'sup? :)]
Having taken a look at the samples, they are indeed agobots (look a bit
more like phatbots, but who can tell anymore?), but polymorphic ones
Also, they are packed using PE-Crypt.Wonk, which would explain why upx
-d didn't work.