morphHTA is a morphing Cobalt Strike PowerShell Evil HTA generator.
Download
git clone https://github.com/vysec/morphHTA.git
Usage
usage: morph-hta.py [-h] [--in <input_file>] [--out <output_file>]
[--maxstrlen <default: 1000>] [--maxvarlen <default: 40>]
[--maxnumsplit <default: 10>]
optional arguments:
-h, --help show this help message and exit
--in <input_file> File to input Cobalt Strike PowerShell HTA
--out <output_file> File to output the morphed HTA to
--maxstrlen <default: 1000>
Max length of randomly generated strings
--maxvarlen <default: 40>
Max length of randomly generated variable names
--maxnumsplit <default: 10>
Max number of times values should be split in chr
obfuscation
Max variable name length and randomly generated string length reduced to reduce overall size of HTA output:
/morphHTA# python morph-hta.py --maxstrlen 4 --maxvarlen 4
Max split in chr() obfuscation, this reduces the number of additions we do to reduce length:
/morphHTA# python morph-hta.py --maxnumsplit 4
Change input file and output files:
/morphHTA# python morph-hta.py --in advert.hta --out advert-morph.hta
I suggest not uploading to VT: