Threat Database Trojans Trojan.MSIL.Krypt.GEBG

Trojan.MSIL.Krypt.GEBG

By CagedTech in Trojans
Published:

Threat Scorecard

Threat Level: 80 % (High)
Infected Computers: 143
First Seen: July 31, 2021
Last Seen: October 27, 2026
OS(es) Affected: Windows

Trojan.MSIL.Krypt.GEBG is a Windows-based Trojan built on the .NET framework that is designed to infiltrate computers quietly and carry out harmful actions without the user's knowledge. Classified as a high-risk threat with a danger level of 8 out of 10, this malware has been detected across a wide range of systems and continues to pose an active threat to Windows users.

What Trojan.MSIL.Krypt.GEBG Does

Once it finds its way onto a system, Trojan.MSIL.Krypt.GEBG installs itself stealthily and runs silently in the background, often without any visible signs that something is wrong. It is a .NET-based executable that uses encryption routines, including algorithms such as RijndaelManaged, to protect its code and make analysis more difficult for security researchers. The file also contains anti-debugging techniques, such as checks for the presence of a debugger, which allow it to evade detection and analysis in test environments.

Behind the scenes, this Trojan can perform a wide range of malicious functions. It may allow remote attackers to gain significant or even complete control over an infected system. Typical of this category of malware, it can covertly delete files, install additional malicious programs, modify system settings, and harvest sensitive information stored on the device. Because it operates without an official digital signature and is not packed in the traditional sense, it can sometimes blend in with legitimate-looking software, especially since its internal file description falsely references a generic "WindowsFormsApplication" name.

How It Usually Gets onto Computers

Trojan.MSIL.Krypt.GEBG commonly spreads by exploiting unpatched system vulnerabilities and security flaws. It is also distributed through software downloads from untrustworthy or malicious websites, as well as through email attachments sent from unknown or untrusted senders. These attachments may be disguised using misleading file extensions, including executable files, screensavers, video files, or even image files, tricking users into opening them.

Risks for the User

The presence of this Trojan on a system creates serious risks. Attackers may be able to remotely monitor activity, steal personal or financial data, install further malware, or use the infected machine as a launching point for other attacks. Because the Trojan can access user information and system details, victims may face privacy violations, financial loss, identity theft, or long-term compromise of their device and accounts.

Signs of Infection

Trojans like this one are built to avoid detection, so obvious symptoms are often absent. However, users may notice unusual slowdowns, unexpected crashes, unfamiliar processes running in the background, changes to system settings they did not make, or the appearance of unknown files and programs. Unexplained network activity can also be a warning sign.

How to Stay Protected

To reduce the risk of infection, keep the Windows operating system and all installed software fully updated to close known security vulnerabilities. Avoid downloading programs from untrusted or unofficial websites, and never open email attachments from unknown or suspicious senders, regardless of the file type shown. Maintaining regular backups of important files, using a reputable and up-to-date security solution, and staying cautious when installing new software are all essential steps toward keeping your computer safe from threats like Trojan.MSIL.Krypt.GEBG.

Analysis Report

General information

Family Name: Trojan.MSIL.Krypt.GEBG
Signature status: No Signature

Known Samples

MD5: 4cd239ef80fd78d61acd9d01ec7ad633
SHA1: d806d9a24c95a9da33a6311793a959320a47dce3
SHA256: 220BB2B7DEBA41F53A8D86D677691AFF283314A29C27CC49B2BA396699237825
File Size: 566.27 KB, 566272 bytes

Windows Portable Executable Attributes

  • File doesn't have "Rich" header
  • File doesn't have exports table
  • File doesn't have security information
  • File is .NET application
  • File is 32-bit executable
  • File is either console or GUI application
  • File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
  • File is not packed
  • IMAGE_FILE_DLL is not set inside PE header (Executable)
  • IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)

Windows PE Version Information

Name Value
Assembly Version 1.0.0.0
File Description WindowsFormsApplication1
File Version 1.0.0.0
Internal Name dqlG.exe
Legal Copyright Copyright © 2019
Original Filename dqlG.exe
Product Name WindowsFormsApplication1
Product Version 1.0.0.0

File Traits

  • .NET
  • HighEntropy
  • RijndaelManaged
  • x86

Block Information

Total Blocks: 137
Potentially Malicious Blocks: 59
Whitelisted Blocks: 32
Unknown Blocks: 46

Visual Map

0 - Probable Safe Block
? - Unknown Block
x - Potentially Malicious Block

Windows API Usage

Category API
User Data Access
  • GetUserDefaultLocaleName
  • GetUserObjectInformation
Anti Debug
  • IsDebuggerPresent
  • NtQuerySystemInformation
Encryption Used
  • BCryptOpenAlgorithmProvider