JS:Iframe-CLO [Trj]

Posted: May 29, 2015

Threat Metric

The Threat Meter is a malware assessment that SpywareRemove.com's research team is able to give every identifiable malware threat. Our Threat Meter includes several criteria based off of specific malware threats to value their severity, reach and volume. The Threat Meter is able to give you a numerical breakdown of each threat's initial Threat Level, Detection Count, Volume Count, Trend Path and Percentage Impact. The overall ranking of each threat in the Threat Meter is a basic breakdown of how all threats are ranked within our own extensive malware database. The scoring for each specific malware threat can be easily compared to other emerging threats to draw a contrast in its particular severity. The Threat Meter is a useful tool in the endeavor of seeking a solution to remove a threat or pursue additional analytical research for all types of computer users.

The following fields listed on the Threat Meter containing a specific value, are explained in detail below:

Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.

Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.

Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.

Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.

% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.

Threat Level:	8/10
Infected PCs:	14

First Seen:	June 1, 2015
Last Seen:	November 27, 2021
OS(es) Affected:	Windows

JS:Iframe-CLO [Trj] is an HTML element that may harm Web surfers through their browsers, such as by enabling attacks or redirecting a victim to an online tactic. Websites that generate JS:Iframe-CLO [Trj] warnings may be compromised. Meanwhile, a PC that shows JS:Iframe-CLO [Trj] pop-ups automatically also is likely to be suffering from the presence of threatening software or a PUP. In either case, the relevant PC should be examined by all appropriate anti-malware tools until you've removed the source of contact with the JS:Iframe-CLO [Trj] script.

Framing the Problem of JS:Iframe-CLO [Trj]

JS:Iframe-CLO [Trj] is one member of a vast family of JavaScript-based threats that you may encounter while browsing the Web, but also may load themselves via third parties threats circumventing your PC's security. One common attack using iFrame elements like JS:Iframe-CLO [Trj] loads a non-visible reference to a secondary, threatening website from a non-threatening one, which allows third parties to install threats or launch online hoaxes. These attacks frequently are triggered through compromised advertising networks, and malware experts have some evidence of JS:Iframe-CLO [Trj] being distributed by such sources.

Contact with a JS:Iframe-CLO [Trj] may instigate multiple security issues, with particularly likely attacks including:

Your PC may be exposed to attacks from JS:Iframe-CLO [Trj], which may install threatening software automatically. The more sophisticated of these delivery methods, using exploit kits, may scan your computer for an 'appropriate' software vulnerability to install their payloads.
JS:Iframe-CLO [Trj] also may load fraudulent system warnings, including mockups of system scans, fake Windows alerts and other messages meant to lure you into taking actions to harm yourself or your machine. They may promote contact with a fraudulent technical support company over the phone or request that you purchase scamware (such as rogue defraggers).

Although many JavaScript-derived threats are visible, others are loaded without any visually apparent symptoms, and JS:Iframe-CLO [Trj] may conform to either format. Malware experts also have seen recurring cases of JS:Iframe-CLO [Trj]'s being loaded through the actions of pre-installed threats that use Windows processes to load the script. These processes don't always include any visible GUI elements. However, your security software can alert you to JS:Iframe-CLO [Trj] attacks, even when you're not surfing the Web.

Breaking out of JS:Iframe-CLO [Trj]'s Script

Blocking JavaScript by default can prevent your browser from loading JS:Iframe-CLO [Trj] while it visited unsafe websites. However, it may not prevent other threats from loading JS:Iframe-CLO [Trj] automatically, typically with the intention of installing new, specialized forms of threatening software. Many anti-malware products also should be able to identify threats trying to load JS:Iframe-CLO [Trj] automatically. However, anti-malware solutions that can identify a JS:Iframe-CLO [Trj] attack also should be able to detect and delete Trojans associated with JS:Iframe-CLO [Trj] during system scans.

Advanced browser content holds the responsibility for both many of the new Web features taken for granted, as well as for new, sophisticated attacks against incautious Web surfers. Sites that trigger warnings for threats like JS:Iframe-CLO [Trj] may not always be intentionally threatening, but may be assumed to be compromised, in most cases. Common sense browser-based security features, backed up by anti-malware protection, continue to be the most reliable defense against toxic scripts like JS:Iframe-CLO [Trj], whether they load visibly or invisibly.

JS:Iframe-CLO [Trj]

Threat Metric

Framing the Problem of JS:Iframe-CLO [Trj]

Breaking out of JS:Iframe-CLO [Trj]'s Script

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