Home Malware Programs Trojans JS:ScriptXE-inf

JS:ScriptXE-inf

Posted: March 5, 2014

Threat Metric

Threat Level: 9/10
Infected PCs: 9
First Seen: March 5, 2014
Last Seen: February 8, 2022
OS(es) Affected: Windows


JS:ScriptXE-inf is a JavaScript exploit that may be utilized to set up software onto your PC automatically, which is often associated with threat-installing attacks. Malware experts also have taken notice of recent JS:ScriptXE-inf campaigns that seem to be using at least one additional, concealed PC threat to provide the redirect to JS:ScriptXE-inf, forming a two-step threat attack with JS:ScriptXE-inf as a linking component between the two. If you see JS:ScriptXE-inf warnings, or have any cause to think that you might have been exposed to a JS:ScriptXE-inf attack, scan your PC immediately with competent and thorough anti-malware solutions to make sure that your PC hasn't been compromised by threatening software.

The JavaScript that Runs without You

JS:ScriptXE-inf is a generic detection for JavaScript-based exploits that try to install software automatically. Unlike normal download requests, a JS:ScriptXE-inf may run without even your awareness that the attack is happening, and may not be visible, unless JS:ScriptXE-inf is detected by some form of security software. Disabling your browser's JavaScript feature may be enough to block JS:ScriptXE-inf, unless the attacks of other threats are also involved (as explained below).

Although JS:ScriptXE-inf may be used in many ways, malware experts have found that recent threat campaigns involving JS:ScriptXE-inf may begin with the initial infection of a previous Trojan or other type of threatening software. This threat then hijacks your browser and forces it to load a Web page containing JS:ScriptXE-inf, which may install a second type of PC threat. This attack may occur even when you're not using your Web browser, and, if unsuccessful, appears to be designed to reoccur until success is achieved. Strong anti-malware protection may be able to block JS:ScriptXE-inf attacks from installing their payloads, but the attacks will continue until the original threat is removed.

Keeping a Firm Grip on Your Potential Brushes with JS:ScriptXE-inf

JS:ScriptXE-inf attacks have been ongoing for years, but malware researchers have seen a new trend in recent, 2014-era ones. Compromised Skype advertisements seem to be the latest infection vector used to attack PCs, forcing them to load threats that then make repeated requests of websites hosting JS:ScriptXE-inf. Until this issue is cleared up, Skype users are recommended to be especially strict about possessing anti-malware protection that can block automatic exploits targeting your PC, particularly script-based ones embedded in advertising content. Other security steps worth taking include updating JavaScript, disabling JavaScript through your browser's settings or, in some cases, even uninstalling JavaScript from your machine.

Malware researchers are at work trying to identify the threat associated with JS:ScriptXE-inf's attacks, but have noted that, like JS:ScriptXE-inf, itself, related threats tend to be stealth-based. This means that you shouldn't assume that your PC is safe, just because there are no pop-ups or other symptoms of attacks against it. Symptomless threat types include such high-level PC threats as banking Trojans, worms, backdoor Trojans and rootkits, all of which may cause long term damage to your PC or steal extremely sensitive data. Protecting your computer from JS:ScriptXE-inf, therefore, is less about noticing obvious attacks than it is about having the right anti-malware defenses in place.

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