Trojan.HTML.Downloader.Agent.NBF

Posted: March 2, 2012

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:	9/10
Infected PCs:	11

First Seen:	March 2, 2012
OS(es) Affected:	Windows

Trojan.HTML.Downloader.Agent.NBF is a malicious HTML page that hosts JavaScript exploits. As just a stepping stone to a multi-part attack, Trojan.HTML.Downloader.Agent.NBF hosts attacks that eventually compromise your PC by installing Zeus Trojan, a Trojan that specializes in theft of fiscal information. Because Zeus (AKA Zbot) is a high-level threat that should be removed only by advanced anti-malware products, SpywareRemove.com malware researchers recommend that you scan your PC after any possibility, no matter how slight, of contact with Trojan.HTML.Downloader.Agent.NBF or related PC threats. Trojan.HTML.Downloader.Agent.NBF may be difficult to anticipate due to recent attacks that have inserted redirects to Trojan.HTML.Downloader.Agent.NBF in innocent websites, but, in most cases, the initial phases of these attacks can be seen manifested in the form of 'Please wait page is loading' pages.

Trojan.HTML.Downloader.Agent.NBF: A Bulwark for Java to Install Digital Thieves

Trojan.HTML.Downloader.Agent.NBF is just a middle phase in a sophisticated plan to infect your PC and, from there, steal your bank account info and everything that's linked to it. Complete procedures for Trojan.HTML.Downloader.Agent.NBF attacks are organized thusly:

Trojan.JS.QOS shows itself as a fake 'Please wait page is loading' webpage and contains a JavaScript exploit.
The exploit in question, Trojan.JS.Redirector.YF, will redirect your web browser to a second page.
This page, finally, is detected by the name Trojan.HTML.Downloader.NBF, and hosts another Java exploit (labeled CVE-2010-0840) to install malicious software.
The final and most hazardous step is the installation of the payload, which SpywareRemove.com malware researchers have identified as a Zbot Trojan, AKA Zeus.

SpywareRemove.com malware research team instruct you to be on watch against possible Trojan.HTML.Downloader.Agent.NBF attacks even if you're browsing safe and reputable websites. Recent footprints of Trojan.HTML.Downloader.Agent.NBF attacks are indicative of website-hacking assaults that have inserted Trojan.HTML.Downloader.Agent.NBF-supporting JavaScript files without consent from the site's web master. However, if you don't use JavaScript or keep it disabled for sites that are at risk, Trojan.HTML.Downloader.Agent.NBF and related PC threats shouldn't be able to complete their virtual robbery plan, which requires several uses of JavaScript as the lynchpin.

The Results of Trojan.HTML.Downloader.Agent.NBF Completing Its Part in the Heist

If Trojan.HTML.Downloader.Agent.NBF does manage to install a Zbot Trojan on your PC, symptoms of this attack may not be visible – aside, of course, from the initial website redirects that are involved with Trojan.HTML.Downloader.Agent.NBF and Trojan.JS.QOS. SpywareRemove.com malware experts discourage attempts to find or delete Trojan.HTML.Downloader.Agent.NBF without assistance from either a qualified PC security expert or competent anti-malware products, since Zbot and other banker Trojans are designed to avoid attention and conduct their attacks via subtle settings changes.

Even after you've removed Trojan.HTML.Downloader.Agent.NBF's payload, you should strongly consider changing your bank password and speaking to your bank's customer support for other steps to protect your account. SpywareRemove.com malware analysts warn that Trojan.HTML.Downloader.Agent.NBF-delivered Trojans are often able to use multiple methods to steal account-related information without being noticed, and unless you stopped the Trojan.HTML.Downloader.Agent.NBF attack immediately, your account could already be compromised.

Trojan.HTML.Downloader.Agent.NBF

Threat Metric

Trojan.HTML.Downloader.Agent.NBF: A Bulwark for Java to Install Digital Thieves

The Results of Trojan.HTML.Downloader.Agent.NBF Completing Its Part in the Heist

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