Wkysol

Posted: January 13, 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.

Ranking:	3,517
Threat Level:	2/10
Infected PCs:	16,856

First Seen:	January 13, 2012
Last Seen:	October 17, 2023
OS(es) Affected:	Windows

Wkysol is a group of Trojans that inject themselves into web browsers for the purpose of creating backdoor vulnerabilities on your PC. Hackers may exploit these vulnerabilities to control your computer in several ways, for example, by stealing personal information or installing other PC threats besides Wkysol Trojans. Because Wkysol Trojans have been known to use PDF exploits to install themselves, avoiding suspicious PDF files or even refraining from installing PDF-compatible software can allow you to evade potential Wkysol attacks. Symptoms from a Wkysol attack are unlikely to be highly visible, but SpywareRemove.com malware analysts classify Wkysol as a high-level threat due to the extremely invasive nature of its security attacks, and recommend that you remove Wkysol only by using appropriate types of anti-malware applications to analyze your PC.

Watching the Wkysol Backdoor Creak Open on Your PC

Wkysol Trojans, like many types of backdoor Trojans, expend great effort to avoid being very visible and may show absolutely no significant traces of their attacks against your PC. This causes SpywareRemove.com malware experts to note the importance of having anti-malware products that can detect Wkysol Trojans and similar PC threats in automated scans, although, being a recent sub-type of Trojan, Wkysol may be difficult to detect for anti-malware applications that aren't up-to-date. Many types of PC security brands have only developed a positive identification for Wkysol Trojans as of the last month of 2011 or even early 2012; therefore, you should update your security products if they're using threat databases that are older than those dates.

Wkysol Trojans, which may be detected by the names of Backdoor:Win32/Wkysol.D, Backdoor:Win32/Wkysol.B or Backdoor:Win32/Wkysol.C, use a hidden instance of your web browser to launch attacks against your PC. This enables Wkysol Trojans to ignore your firewall and other types of network security automatically, and from there, the Wkysol Trojan will open a backdoor for criminal access. Backdoors can be used for many purposes, including:

Installing other kinds of PC threats – spyware, rogue anti-malware programs, browser hijackers, etc.
Using your computer's resources for crimes such as DDoS attacks. SpywareRemove.com malware researchers note that, aside from unusual allocation of RAM and other system resources, symptoms for such attacks are often minor or nonexistent.
Attempts to steal personal information, potentially including account names, passwords or bank information.

Dodging Wkysol Before That It Sneaks That Backdoor Open At All

Wkysol-based Trojans have been noted to use PDF exploits, such as CVE-2011-2462, to install themselves without permission. These exploits can only trigger after a .pdf file has been opened, and if you don't have a PDF-compatible product (such as Adobe Reader) on your PC, Wkysol will be unable to install itself. Nonetheless, mass-mailed file attachments and other questionable files are often mislabeled to display an incorrect file type, and SpywareRemove.com malware researchers warn against opening any type of file from a source that hasn't been confirmed to be safe.

If you're in the position of needing to remove a Wkysol Trojan, it's recommended that you scan your computer with a dedicated anti-malware program to detect, not just Wkysol, but any PC threats that its criminal partners may have installed through Wkysol's backdoor. If this isn't done immediately, you may also want to take actions to change passwords and other forms of security for your online accounts; doing this will prevent break-ins that could occur due to information that Wkysol has already enabled hackers to steal.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:

%TEMP%tpfaxm.dat

File name: %TEMP%tpfaxm.dat
File type: Data file
Mime Type: unknown/dat
Group: Malware file

%TEMP%tgfaxm.dat

File name: %TEMP%tgfaxm.dat
File type: Data file
Mime Type: unknown/dat
Group: Malware file

%TEMP%pfaxm.dat

File name: %TEMP%pfaxm.dat
File type: Data file
Mime Type: unknown/dat
Group: Malware file

%TEMP%gfaxm.dat

File name: %TEMP%gfaxm.dat
File type: Data file
Mime Type: unknown/dat
Group: Malware file

Additional Information

The following URL's were detected:

gettingyourcontent.com