Backdoor:Win32/Zegost.B

Posted: June 26, 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:	6/10
Infected PCs:	59

First Seen:	June 26, 2013
Last Seen:	August 28, 2022
OS(es) Affected:	Windows

Backdoor:Win32/Zegost.B is a backdoor Trojan that hides its code in a basic Windows process while enabling such invasive attacks as installing other malware, compromising your PC's network security setup or stealing personal information by various means. Recent versions of Backdoor:Win32/Zegost.B also have been seen using similar anti-analysis techniques to those in use by variants of other Trojans like Danglo and Farfli (families of Trojan downloaders and backdoor Trojans, respectively), leading some PC security researchers to speculate in ties between these families' malware authors. No matter what its family ties may be, Backdoor:Win32/Zegost.B always is a danger to your PC, and SpywareRemove.com malware experts recommend nothing less than a dependable anti-malware program for finding or deleting Backdoor:Win32/Zegost.B infections.

Backdoor:Win32/Zegost.B: the 'Broken' Program that Works Just Fine

Backdoor:Win32/Zegost.B uses a semi-unique anti-analysis technique that also has been exploited by recent variants of similar Trojans designed for compromising PC security and installing additional malware. By including seemingly 'invalid' (actually valid, but undocumented) FPU instructions in its code, Backdoor:Win32/Zegost.B is disassembled incorrectly in various tools, making analysis of its code a little more difficult than usual. However, SpywareRemove.com malware experts note that this defense only is a trivial problem for competent anti-malware products, although Backdoor:Win32/Zegost.B, as a recently-updated PC threat, may be difficult to detect with any outdated security software.

Aside from its interesting characteristic for malware researchers like SpywareRemove.com own, Backdoor:Win32/Zegost.B also includes some functions that are of more concern to its victims. These attacks include, but aren't limited to:

Taking screenshots of your PC to steal confidential data.
Gathering network setup information, especially information related to your RAS Phonebook (a general data-managing entity for the Remote Access Connection Manager).
Downloading and launching potentially malicious files.
Deleting files.

Seeing Through Backdoor:Win32/Zegost.B's In-Plain-Sight Disguise

Even though Backdoor:Win32/Zegost.B launches right along with Windows, Backdoor:Win32/Zegost.B doesn't have its own memory process. SpywareRemove.com malware experts have confirmed that Backdoor:Win32/Zegost.B, by default, injects its code into the ubiquitous Svchost.exe process, thereby hiding itself in a basic component of your own operating system. Other PC threats installed by Backdoor:Win32/Zegost.B also may complicate the removal of Backdoor:Win32/Zegost.B, which should be accomplished with appropriate anti-malware tools.

If Backdoor:Win32/Zegost.B deletes necessary software related to disinfecting your PC or otherwise maintaining your PC's safety, SpywareRemove.com malware experts recommend loading a removable USB device with a backup OS. Booting your computer from a safe source will let you launch Windows and remove Backdoor:Win32/Zegost.B with any relevant anti-malware tools without any interference.

Current variants of Backdoor:Win32/Zegost.B are specific to Windows although other backdoor Trojans have been found to be compatible with other major OSes – such as Linux and Mac. Symptoms of Backdoor:Win32/Zegost.B's attacks are (as usual) minimal from a visual standpoint and shouldn't be considered readily identifiable by eye.

Backdoor:Win32/Zegost.B

Threat Metric

Backdoor:Win32/Zegost.B: the 'Broken' Program that Works Just Fine

Seeing Through Backdoor:Win32/Zegost.B's In-Plain-Sight Disguise

Leave a Reply