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By default it scans the exe and fd/* symlinks, but you can add your own list too. The default Yara rule file is YaraRules/index.yar.

Initial setup

cd ~
sudo apt-get update && sudo apt-get upgrade -y
sudo apt-get install virtualenv git -y
git clone https://github.com/Saket-Upadhyay/ProcPuppy.git
cd ProcPuppy
virtualenv ProcPuppyEnv
source ProcPuppyEnv/bin/activate
pip install -r requirements.txt
deactivate

Run

cd ~/ProcPuppy
source ProcPuppyEnv/bin/activate
python ProcPuppy.py

Global Variables

YARARULEFILE = "<YOUR VALID YARA FILE HERE>"
NUMBEROFTHREADS = <NUMBER OF THREADS YOU WANT, must be integer>
ENABLEYARAINCLUDE= <True/False> (Enables or Disables 'include' capabilities of the yara compiler.)

Import Custom Yara Rules

There are two ways to do it-

Method 1

You can either add a import statement to "YaraRules/index.yar" like -

include "PhPinImages"
include "CustomExeSig"
include "<path to your custom rule>"

(for this ENABLEYARAINCLUDE must be set to True)

Method 2

Or you can also direct the YARARULEFILE variable to your custom file directly.

Suggestion: If you are using multiple rule files, the first option is better. If you are using single file with multiple rules defined in it, second option is better.

Tested on:

  • Ubuntu 20.4
  • WSL 2.0 on Windows 10 Pro for Workstations 21H1 BUILD:19043.1288

Will be discussed at PyCode Conference 2021 (Online). See Saket-Upadhyay/Talks_and_Presentation for presentation slides and credits.

exploit.png: 'in-image PhP' payload in "Test Malicious App" folder is created using CUPPS

Thanks to macrovector for the base puppy vector in the logo, I downloaded it from www.freepik.com, then edited it for my use.