Trojan:Win32/Sefnit.AS

Posted: November 1, 2013

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:	5/10
Infected PCs:	59

First Seen:	November 1, 2013
Last Seen:	August 9, 2024
OS(es) Affected:	Windows

Trojan:Win32/Sefnit.AS is a variant of Sefnit, a Trojan family particularly known for using search engine hijacks to 'encourage' victims to visit specific websites. However, Trojan:Win32/Sefnit.AS also is a general-purpose Trojan that may install other threats or use your PC's resources for crimes such as simulating Web traffic. While other distribution methods also may be used, P2P networks are believed to be distributing various Trojan:Win32/Sefnit.AS installers in high numbers. Malware experts strongly suggest using anti-malware products to protect your PC from and remove Trojan:Win32/Sefnit.AS as needed if you insist on using such networks to download any new applications.

Trojan:Win32/Sefnit.AS: the Sefnit Spinoff that Weaves Trouble for Your P

Trojan:Win32/Sefnit.AS just is one, albeit a major, component of a multiple-component SEFNIT infection that may be geared towards a range of different attacks. Malware experts previously found many members of Trojan:Win32/Sefnit.AS's family being engaged in Web browser-based search hijacks. However, Trojan:Win32/Sefnit.AS's functions are a little different than those of a browser hijacker, and include:

Downloading and installing other unsafe software automatically. The types of threats installed by Trojan:Win32/Sefnit.AS may be reconfigured to include diverse PC threats like worms, spyware or fake Police Trojans.
Using your computer's resources to perform click fraud, a crime that simulates Web traffic for generating revenue.

As harmful as Trojan:Win32/Sefnit.AS is to your PC, Trojan:Win32/Sefnit.AS usually is one of several Trojans on your computer. Based on past Sefnit attacks, malware experts find it a safe assumption that at least two other Sefnit-based PC threats may be related to a Trojan:Win32/Sefnit.AS infection. However, this tally doesn't include any other threat that Trojan:Win32/Sefnit.AS may install for various purposes.

Sniffing Trojan:Win32/Sefnit.AS out Before It Sidles Onto Your Computer

Trojan:Win32/Sefnit.AS sometimes is distributed through software bundles with normally-safe applications, including those that are affiliated with PUP.InstallBrain and/or PUPs like the Babylon Toolbar. Because Trojan:Win32/Sefnit.AS isn't an ordinary application that will announce its installation and doesn't necessarily display symptoms that are easily detected, your computer may not show signs of a Trojan:Win32/Sefnit.AS attack without protection with reliable anti-malware products. Similarly, deleting Trojan:Win32/Sefnit.AS also should be done with a good anti-malware program, due to this family's multiple-component nature and tendency to use misleading file names.

Because peer-to-peer networks are implicated in the distribution of Trojan:Win32/Sefnit.AS, whether deliberately or unintentionally, using such sources for new software always can be considered something of a risk. Most competent anti-malware products should be able to detect compromised installers including Trojan:Win32/Sefnit.AS before you launch the compromised file. No matter what manner in which your PC is infected by Trojan:Win32/Sefnit.AS, its presence is equivalent to that of a high-level security threat and always should be removed with urgency.

Some other members of the same family as Trojan:Win32/Sefnit.AS that you also may encounter include Trojan:Win32/Sefnit.AU, Trojan:Win32/Sefnit.AC and the heuristic detection of Trojan.Agent/Gen-Sefnit.

Trojan:Win32/Sefnit.AS

Threat Metric

Trojan:Win32/Sefnit.AS: the Sefnit Spinoff that Weaves Trouble for Your P

Sniffing Trojan:Win32/Sefnit.AS out Before It Sidles Onto Your Computer

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