Malware

SharpIncrease – Mastering Malware Obfuscation To Bypass Security Detection

Adversaries may use binary padding to add junk data and change the on-disk representation of malware.

This can be done without affecting the functionality or behavior of a binary, but can increase the size of the binary beyond what some security tools are capable of handling due to file size limitations.

Binary padding effectively changes the checksum of the file and can also be used to avoid hash-based blocklists and static anti-virus signatures.

The padding used is commonly generated by a function to create junk data and then appended to the end or applied to sections of malware.

Increasing the file size may decrease the effectiveness of certain tools and detection capabilities that are not designed or configured to scan large files.

This may also reduce the likelihood of being collected for analysis. Public file scanning services, such as VirusTotal, limits the maximum size of an uploaded file to be analyzed

SharpIncrease

SharpIncrease can bypass many security measures and can be used with various file extensions.

You can even increase the size of Windows Form Applications with null bytes.


  ____  _                     ___
 / ___|| |__   __ _ _ __ _ __|_ _|_ __   ___ _ __ ___  __ _ ___  ___
 \___ \| '_ \ / _` | '__| '_ \| || '_ \ / __| '__/ _ \/ _` / __|/ _ \
  ___) | | | | (_| | |  | |_) | || | | | (__| | |  __/ (_| \__ \  __/
 |____/|_| |_|\__,_|_|  | .__/___|_| |_|\___|_|  \___|\__,_|___/\___|
                        |_|

            Mert Daş     @merterpreter


Usage: SharpIncrease.exe -D inputfile -S MB -O outputfile

Varshini

Varshini is a Cyber Security expert in Threat Analysis, Vulnerability Assessment, and Research. Passionate about staying ahead of emerging Threats and Technologies.

Recent Posts

Cybersecurity – Tools And Their Function

Cybersecurity tools play a critical role in safeguarding digital assets, systems, and networks from malicious…

3 hours ago

MODeflattener – Miasm’s OLLVM Deflattener

MODeflattener is a specialized tool designed to reverse OLLVM's control flow flattening obfuscation through static…

3 hours ago

My Awesome List : Tools And Their Functions

"My Awesome List" is a curated collection of tools, libraries, and resources spanning various domains…

3 hours ago

Chrome Browser Exploitation, Part 3 : Analyzing And Exploiting CVE-2018-17463

CVE-2018-17463, a type confusion vulnerability in Chrome’s V8 JavaScript engine, allowed attackers to execute arbitrary…

3 hours ago

Chrome Browser Exploitation, Part 1 : Introduction To V8 And JavaScript Internals

The blog post "Chrome Browser Exploitation, Part 1: Introduction to V8 and JavaScript Internals" provides…

3 hours ago

Chrome Browser Exploitation, Part 3: Analyzing and Exploiting CVE-2018-17463

The exploitation of CVE-2018-17463, a type confusion vulnerability in Chrome’s V8 JavaScript engine, relies on…

6 hours ago