Home Malware Programs Viruses VirTool:JS/Obfuscator.EK

VirTool:JS/Obfuscator.EK

Posted: April 21, 2014

Threat Metric

Ranking: 14,790
Threat Level: 1/10
Infected PCs: 304
First Seen: April 21, 2014
Last Seen: August 13, 2023
OS(es) Affected: Windows


VirTool:JS/Obfuscator.EK is a detection for threats that have been deliberately obscured to make its identification difficult. Although VirTool:JS/Obfuscator.EK may be applied to a wide swathe of different PC threats, malware experts often link them to the Blackhole Exploit Kit and other attackers that are hosted on compromised Web pages. Protection from VirTool:JS/Obfuscator.EK may take as many forms as its interior code, but always should include anti-malware tools for finding and removing VirTool:JS/Obfuscator.EK, hopefully, before VirTool:JS/Obfuscator.EK can cause any harm.

The Unhappy Possibilities Hidden Beneath a Little JavaScript

VirTool:JS/Obfuscator is a general term employed for threatening software that tries to hide its intentions beneath layers of JavaScript-based code obfuscation. Code obfuscation is a sufficiently common practice for threats that the behavior of individual members of this family, such as VirTool:JS/Obfuscator.EK may be difficult to predict. However, malware researchers usually find these practices to accompany high-level PC threats, or simple Trojans that are charged with installing these threats. Examples of possible variants of VirTool:JS/Obfuscator.EK include:

  • E-mail spam may include fraudulent file attachments that are protected from being identified as threatening. These versions of VirTool:JS/Obfuscator.EK Trojans usually have no specific purposes, beyond installing additional threatening software, which may be embedded in their bodies or downloaded from a remote server.
  • However, a download attack from VirTool:JS/Obfuscator.EK may occur automatically. Exploit kit-based variants of VirTool:JS/Obfuscator.EK Trojans are hosted on threatening or hacked websites, and may launch automatically. PCs with relevant software vulnerabilities may be automatically infected with threats.
  • In other cases, VirTool:JS/Obfuscator.EK may be a defense for threats that already are on your system, as opposed to an installer for threats. High-level threats known to include these defenses include banking Trojans, rootkits, backdoor Trojans and other types of threats with multiple components.

Symptoms during a VirTool:JS/Obfuscator.EK attack may or may not be evident, and malware experts recommend against trying to detect VirTool:JS/Obfuscator.EK manually. The majority of threat programs protected by JavaScript obfuscation or similar techniques only are visible if visibility is a built-in part of their strategy, such as with fake Police Trojans.

Clarifying the Obfuscation of a VirTool:JS/Obfuscator.EK Trojan

In some ways, detecting VirTool:JS/Obfuscator.EK may be a good thing – since it indicates that your anti-malware software has correctly identified a threatening program, despite that program's efforts to hide itself. However, VirTool:JS/Obfuscator.EK's defenses may prevent your anti-malware tools from identifying a PC threat as specifically as would be appropriate, and can leave the nature of attacks against your PC in doubt. As a general precaution against any threat with uncertain capabilities, malware experts recommend assuming that a VirTool:JS/Obfuscator.EK-compromised PC has the potential to have sensitive information collected from it, such as online account passwords. Third parties having remote access to the infected computer also is a common consequence.

Although changing passwords and re-securing any violated accounts obviously are important concerns, you also should attempt to delete VirTool:JS/Obfuscator.EK through the same anti-malware products that detected VirTool:JS/Obfuscator.EK, before all other tasks. Preventing other PCs from coming into contact with a VirTool:JS/Obfuscator.EK infection through USB devices or local networks also is critical.

VirTool:JS/Obfuscator.EK may be associated with PC threats that have more than one component. Making full use of the most in-depth system-scanning functions available to you will let your security software detect other threats related to VirTool:JS/Obfuscator.EK, which is at least as important as deleting VirTool:JS/Obfuscator.EK, itself.

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