Trojan.Opachki.H

Posted: February 16, 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:	8/10
Infected PCs:	2,424

First Seen:	February 16, 2012
OS(es) Affected:	Windows

Trojan:Win32/Opachki.H is a Trojan that disguises its files by using file names that resemble Windows components to avoid detection while Trojan:Win32/Opachki.H contacts a remote server for instructions. Trojans like Trojan:Win32/Opachki.H that acquire assistance from C&C servers, which can be used to install other infections onto your computer, steal personal information or conduct attacks such as sending spam or redirecting your browser to unwanted sites. Since Trojan:Win32/Opachki.H's potential payload is relatively malleable, SpywareRemove.com malware researchers recommend using anti-malware programs to detect Trojan:Win32/Opachki.H and any other malicious software that Trojan:Win32/Opachki.H may install. Other than its file name choices, Trojan:Win32/Opachki.H hasn't been noted to have any unusually sophisticated types of defensive characteristics. As such, deleting Trojan:Win32/Opachki.H during a system scan should be an easy prospect for competent security software.

How Trojan:Win32/Opachki.H Turns Trusting File Names into a Handicap for Your Computer Security

Trojan:Win32/Opachki.H conceals its files in multiple locations, most notably including the Windows folder, and uses a common Registry exploit to insure that whenever you launch Windows, Trojan:Win32/Opachki.H will be right there with you. However, even inspecting your memory processes via Task Manager may not make it easy to detect Trojan:Win32/Opachki.H, which uses various names to conceal its components or names its files to resemble native Windows processes, such as Crrss.exe and Winlogon.exe. Since deleting the real Windows versions of these files will damage your operating system, SpywareRemove.com malware experts recommend using anti-malware applications to differentiate between Trojan:Win32/Opachki.H files and Windows components.

Trojan:Win32/Opachki.H's other default behavior includes contacting websites that have been confirmed for malicious behavior, such as porngaz.com and glsbid.com. Although careful inspection of your computer (such as monitoring your memory processes or overall system performance) may allow you to notice telltale signs of unusual network activity, open networks ports or disabled firewall features, Trojan:Win32/Opachki.H's behavior doesn't manifest obvious visible symptoms.

Why a Little Contact with a Strange Site Can Cause a Trojan:Win32/Opachki.H-Assisted Compromise in Your PC

Because the servers that Trojan:Win32/Opachki.H contacts have been noted to be disease vectors that distribute PC threats, SpywareRemove.com malware researchers suggest using thorough and complete system scans that can detect, not just Trojan:Win32/Opachki.H, but also any other hostile software that Trojan:Win32/Opachki.H might have installed. Common types of payloads from Trojans like Trojan:Win32/Opachki.H can include fake security applications, browser hijackers and spyware, not all of which have obvious symptoms of their attacks. System scans should, if possible, include the Windows Registry to insure that Trojan:Win32/Opachki.H's startup entries are also removed.

Trojan:Win32/Opachki.H can also be identified by other aliases, including Mal_DLDER and Sus/Behav-1015. Since Trojan:Win32/Opachki.H was identified by most PC security companies in April of 2012, you should be especially careful to update your anti-malware programs if they're using databases that are older than Trojan:Win32/Opachki.H's identification date.

Aliases

SHeur4.PVF [AVG]Dropper/Win32.Daws [AhnLab-V3]Troj/Zbot-BKW [Sophos]Gen:Variant.Kazy.55394 [BitDefender]Trojan-Dropper.Win32.Daws.mul [Kaspersky]Win32:Malware-gen [Avast]a variant of Win32/Kryptik.AAJF [NOD32]Generic BackDoor.ws [McAfee]Generic27.RE [AVG]W32/Daws.MIO!tr [Fortinet]Artemis!62CF6B8029D5 [McAfee-GW-Edition]TR/Drop.Daws.mio [AntiVir]Trojan.Packed.22288 [DrWeb]Trojan-Dropper.Win32.Daws.mio [Kaspersky]Win32:SmokeLoader-FC [Trj] [Avast]
More aliases (276)

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:

%WINDIR%\system32\crrss.exe

File name: crrss.exe
Size: 27.13 KB (27136 bytes)
MD5: 25b3b4cc51bb4f4b37ed36201f5fa897
Detection count: 33
File type: Executable File
Mime Type: unknown/exe
Path: %WINDIR%\system32
Group: Malware file
Last Updated: April 23, 2013

%USERPROFILE%\winlogon.exe

File name: winlogon.exe
Size: 110.08 KB (110080 bytes)
MD5: 24d06dd361daee5a54af913285135746
Detection count: 9
File type: Executable File
Mime Type: unknown/exe
Path: %USERPROFILE%
Group: Malware file
Last Updated: January 5, 2013

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