Trojan.Meterpreter.GB

Trojan.Meterpreter.GB is a Trojan detection for Windows with a danger level of 8 out of 10. Trojans pose as harmless files or hide inside them, and they run quietly after they get onto a computer. According to the feed data, this detection was first seen on 2025-10-31 and last seen on 2026-11-10.

What the threat does

Meterpreter.GB installs itself stealthily and runs silently in the background, where it carries out malicious functions. The description says it may give hackers complete control over an infected system, and that it may covertly delete files.

The name points to Meterpreter, a remote-control component. That is an inference from the name, not a fact from the feed. Threats of this type typically let an attacker run commands, move through files, and watch what happens on the machine. Treat any system with this detection as potentially under someone else's control.

Technical traits observed

• The sample is a 32-bit Windows DLL with high entropy. It has an exports table but no digital signature, no resources, no debug information, and no security information.
• It is not packed, and it is a native application rather than a .NET one.
• It uses low-level system calls through ntdll.dll, which is a way to work close to the operating system.
• It uses NtUnmapViewOfSection, which the analysis groups under process manipulation and evasion. It also uses NtQuerySystemInformation, which is grouped under anti-debugging checks.
• It starts new processes with CreateProcess. In the observed run, it was launched through the Windows rundll32 utility from a user's Downloads folder. This is a common way to run a malicious DLL, because a DLL cannot start on its own.

How it usually gets onto computers

The feed says Meterpreter.GB typically arrives in these ways:

• by exploiting system vulnerabilities and security flaws;
• through software downloads from malicious websites;
• through email attachments from untrusted sources, usually .exe, .pif, .avi and even .jpg files.

Disguised file types are a typical trick. A file that looks like a picture or video may actually be a program.

Risks for the user

• Loss of control: an attacker may take over the computer.
• File damage: files may be deleted without your knowledge.
• Privacy exposure: remote-access Trojans typically allow access to personal documents, saved logins, and other sensitive data. The feed does not confirm this for this specific detection.
• Further infection: a Trojan with remote control can typically be used to bring in more malware.

Signs of infection

The threat is designed to stay hidden, so there may be no obvious symptoms. These signs are typical of this category and are not confirmed for this detection:

• unexpected slowdowns or high CPU or network activity when you are not doing anything;
• files that go missing or change without explanation;
• unfamiliar rundll32 activity or unknown processes in Task Manager;
• security settings changing on their own, or security tools failing to start;
• a recently downloaded or emailed file that seemed to do nothing when you opened it.

How to stay protected

1. Keep Windows and your software updated. Exploiting vulnerabilities is a main infection route, so patches matter.
2. Be careful with email attachments. Do not open files from senders you do not know, especially .exe or .pif files, or any "picture" or "video" that asks to be run.
3. Download software only from official sources. Avoid sites that offer cracked or free versions of paid programs.
4. Show file extensions in Windows so you can spot a program hiding behind an image or video name.
5. Use a reputable, up-to-date anti-malware tool and run full scans regularly.
6. Use a standard user account for daily work, and keep backups of important files offline or on separate storage.

If you think your computer is infected, disconnect it from the internet and run a full scan with an up-to-date anti-malware tool. Because a Trojan like this may give someone remote access, change the passwords for your important accounts afterward, using a different, clean device.