Section names can reveal a lot about the compiler or the packer, if the file is packed. An unpacked PE file contains sections such as .text or .code, .data, .idata, .rsrc, and .reloc, while packed files can contain specific section names, such as UPX0, .aspack, .stub, and so on:
Figure 3: PEiD tool's section viewer
These section names can help you identify whether this file is packed. Searching for these section names on the internet could help you identify the packer that uses these names for its packed data or its stub (unpacking code). You can easily find the section names by opening the file in PEiD and clicking on the > button beside the EP Section. By doing this, you will see the list of sections in this PE file, as well as their names.
