Detection Names :	Gen:Heur.Krypt.21, Gen:heur.vb.krypt.10
Category:	Malware
Type:	Trojan
Platform:	W32

A trojan, or trojan horse, is a seemingly legitimate program which secretly performs other, usually malicious, functions. It is usually user-initiated and does not replicate.

Allow F-Secure Anti-Virus to disinfect the relevant files.

For more general information on disinfection, please see Removal Instructions.

Submitting A Sample for Analysis

If in doubt (for example, a False Positive is suspected), please send a sample to F-Secure Security Labs via the Sample Analysis System for analysis.

Trojan:W32/Krypt is a Heuristic Detection of a file or program that behaves in a suspicious or potentially harmful manner.

This Heuristic Detection indicates that the suspect file (which may be written in Visual Basic) contains trojan-like or worm-like code or harmful routines.

About Heuristic Detections

Heuristic Analysis (also known as behavioral analysis) is an advanced type of antivirus technology that evaluates any potential threats by examining a suspected program's intended actions and effects on a computer system.

To examine a program's potential behavior, the antivirus program executes it in a self-contained, "virtual system" environment. This allows the antivirus program to evaluate how the program's behavior affects the virtual system, without compromising or endangering the user's actual system.

A program that appears to perform suspicious or potentially malicious actions will trigger a Heuristic Detection, such as the one above.

For more information, please see the Heuristic Detection description.