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Dell Detects the Renovation of Stegoloader Trojan

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Important for victims, infected by Stegoloader Trojan.


Den Stegoloader Trojan could come back on your PC or Mac several times if you do not manage to detect and remove its hidden files and main objects.We suggest that you download an advanced removal software for your computer as it will scan for all types of malicious objects, installed with it. Removal attempt with a professional cleaner for Mac or Windows can happen in about 15 minutter time and may save you hours in trying to uninstall Stegoloader Trojan by yourself.

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Further information on SpyHunter
og uninstall guide. Before proceeding, please see SpyHunter’s EULA og Threat Assessment Criteria. The Privacy Policy of SpyHunter can be found on the following link. Bear in mind that SpyHunter scanner is completely free. If the software detects a virus, you can also remove it with a delayed removal or by purchasing SpyHunter’s full version.

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Further information on Combo Cleaner og uninstall guide. Before proceeding, please see Combo Cleaner Terms of Use og Personvern. Bear in mind that Combo Cleaner scanner is completely free. If the software detects a virus, you can also remove threats by purchasing Combo Cleaner’s full version.

The Dell SecureWorks CTU research team has lately analyzed a piece of malware and identified the renovation of Stegoloader that uses digital steganography to hide its main module’s code. This concealed part of the code is hidden inside a Portable Network Graphics (PNG) image that could be downloaded from a legitimate website.

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The free version of SpyHunter will only scan your computer to detect any possible threats. To remove them permanently from your computer, purchase its full version. Spy Hunter malware removal tool additional information / SpyHunter Uninstall Instructions

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Stegoloader in Progress

This malware also known as Win32/Gatak.DR and TSPY_GATAK.GTK is a new kind of malware. Actually, Stegoloader is not technically new on the stage of the malware world but it just has its renewed version. It is from the malware family of Trojan horses and has been active since at least 2013 and yet is relatively unknown.Recently, renovated infections have been detected through PC users and contaminations are almost imperceptible as no one expect to get infected with just visiting a web page.

The Deployment of Stegoloader Implemented via PNG File

It is disseminated through software piracy websites, with a pack of software license key generators. Stegoloader main module uses digital steganography to hide part of its code inside a Portable Network Graphics (PNG) image presented on a legitimate website, as mentioned. This malicious type of Trojan deploys by downloading this image each time it runs and uses steganography to extract its code from the image. The malware is never saved to the hard disk and is completed directly by memory, which makes detection difficult.

→“After downloading the image, Stegoloader uses the gdiplus library to decompress the image, access each pixel, and extract the least significant bit of the color of each pixel. The extracted data stream is decrypted using the RC4 algorithm and a hard-coded key.” Dell SecureWorks CTU research team explained in a blog post.

The Technique Is Simple and Consists of Two Stages

  • The first stage is determining if the computer is safe for deployment. Stegoloader is checking for the type of security analysis system and its strength. This analysis goes with a frequent change of the mouse’s position but it’s not necessary as it could not change its position and in this case malware terminates without exhibiting any malicious activity.
  • The second stage is downloading the main deployment mode. If the result of Stegoloader is clear, then it downloads and runs out main mode. This happens by fetching a basic, every-day PNG file, frequently hosted on a trusted and legitimate website.

Dess, some of Stegoloader’s features are deployed only on compromised systems depending on the interest of the malware operator. Its modular design allows its operator to implement modules when necessary.That limits the exposure of the malware capabilities during investigations and reverses engineering analysis. This limited exposure makes it harder to assess the threat actors’ intent fully. The modules analyzed by CTU researchers list mostly accessed documents, recently visited web sites, enumerate installed programs, stolen passwords, and taken installation files for the IDA tool.

DOWNLOAD REMOVAL TOOL FOR Stegoloader Trojan
The free version of SpyHunter will only scan your computer to detect any possible threats. To remove them permanently from your computer, purchase its full version. Spy Hunter malware removal tool additional information / SpyHunter Uninstall Instructions

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