StegExpose – Steganalysis Tool For Detecting Steganography In Images

The New Acunetix V12 Engine


StegExpose is a steganalysis tool specialized in detecting steganography in lossless images such as PNG and BMP (LSB – least significant bit type). It has a command line interface and is designed to analyse images in bulk while providing reporting capabilities and customization which is comprehensible for non forensic experts.

Steganography is the art or practice of concealing a message, image, or file within another message, image, or file. The word steganography combines the Ancient Greek words steganos, meaning “covered, concealed, or protected”, and graphein meaning “writing”.

StegExpose rating algorithm is derived from an intelligent and thoroughly tested combination of pre-existing pixel based staganalysis methods including:

  • Sample Pairs by Dumitrescu (2003)
  • RS Analysis by Fridrich (2001)
  • Chi Square Attack by Westfeld (2000)
  • Primary Sets by Dumitrescu (2002)

In addition to detecting the presence of steganography, StegExpose also features the quantitative steganalysis (determining the length of the hidden message).

Detecting Steganography In Images

Usage

[directory] – directory containing images to be diagnosed

[speed]Optional. Can be set to ‘default’ or ‘fast’ (set to ‘default if left blank). default mode will try and run all detectors whereas fast mode will skip the expensive detectors in case cheap detectors are able to determine if a file is clean.

[threshold]Optional. The default value here is 0.2 (for both speed modes) and determines the the level at which files are considered to be hiding data or not. A floating point value between 0 and 1 can be used here to update the threshold. If keeping false positives at bay is of priority, set the threshold slightly higher ~0.25. If reducing false negatives is more important, set the threshold slightly lower ~0.15

[csv file]Optional. Name of the csv (comma separated value) file that is to be generated. that If left blank, the program will simply output to the console.

Performance

The accuracy and speed of StegExpose has been tested on an image pool of 15,200 lossless images, where 5,200 of them were stego images (images with hidden data) created with the tools OpenStego, OpenPuff, SilentEye and LSB-Steganography. Embedding rates range from 2.5% to 25.3% with an average of 13.8% (secret data / cover image).

You can download StegExpose here:

master.zip

Or read more here.

Posted in: Countermeasures, Cryptography


Latest Posts:


BDFProxy - Patch Binaries via MITM - BackdoorFactory + mitmProxy BDFProxy – Patch Binaries via MiTM – BackdoorFactory + mitmproxy
BDFProxy allows you to patch binaries via MiTM with The Backdoor Factory combined with mitmproxy enabling on the fly patching of binary downloads
Domained - Multi Tool Subdomain Enumeration Domained – Multi Tool Subdomain Enumeration
Domained is a multi tool subdomain enumeration tool that uses several subdomain enumeration tools and wordlists to create a unique list of subdomains.
Acunetix Vulnerability Scanner For Linux Now Available Acunetix Vulnerability Scanner For Linux Now Available
Acunetix Vulnerability Scanner For Linux is now available, now you get all of the functionality of Acunetix, with all of the dependability of Linux.
Gerix WiFi Cracker - Wireless 802.11 Hacking Tool With GUI Gerix WiFi Cracker – Wireless 802.11 Hacking Tool With GUI
Gerix WiFi cracker is an easy to use Wireless 802.11 Hacking Tool with a GUI, it was originally made to run on BackTrack and this version has been updated for Kali (2018.1).
Malcom - Malware Communication Analyzer Malcom – Malware Communication Analyzer
Malcom is a Malware Communication Analyzer designed to analyze a system's network communication using graphical representations of network traffic.
WepAttack - WLAN 802.11 WEP Key Hacking Tool WepAttack – WLAN 802.11 WEP Key Hacking Tool
WepAttack is a WLAN open source Linux WEP key hacking tool for breaking 802.11 WEP keys using a wordlist based dictionary attack.


Comments are closed.