Hi, 

I have a bunch of PE files for which I need to create the ICON_HAHS based signatures, In documentation, here, it says

The ICON_HASH field can be obtained from the debug output of libclamav.

I have ran the clamscan on PE files with --debug flag but there is no field named ICON_HASH in output. 
I am also confused about the purpose of IconGroup1 or IconGroup2  and how I need to define them in .idb file.  

My apologies, if I am missing something obvious. I spent around 3 hours to find an answer about this before sending this email.

Thank you all.

Regards, 
Irshad Muhammad.