Troj/Backdr-HG

Posted: September 18, 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:	1,443

First Seen:	September 18, 2012
Last Seen:	February 17, 2023
OS(es) Affected:	Windows

The backdoor Trojan Troj/Backdr-HG uses multiple levels of deceit in its attempt to install itself on your PC and then launch itself without your attention. SpywareRemove.com malware analysts have traced Troj/Backdr-HG attacks back to fake license agreements that pretend to be from Microsoft – right up to the point of copying the actual text of a previous Microsoft e-mail. After victims have open the mislabeled file attachment, Troj/Backdr-HG will install and launch itself with the same name (although not the same location) as a default file in the Windows OS. Deceptions aside, Troj/Backdr-HG is just one of the most recent attempts to get innocent PC users to compromise their own computers with backdoor Trojan infections that allow criminals to access confidential information and control the PC. Deleting Troj/Backdr-HG, like any high-level PC threat, should be handled with both haste and a good anti-malware scanner.

The Microsoft E-mail That's Happy to Give You a Trojan

Troj/Backdr-HG, like many other types of malware, prefers to use spam e-mail as its favored form of infection. These e-mail messages include Microsoft's updated logo along with a supposed update to the Microsoft Services agreement for various programs. If the exact wording of the message looks familiar, that's because it's copied, word-for-word, from legitimate Microsoft e-mail messages! SpywareRemove.com malware research team recommends that you watch for the most easily-discerned difference between Troj/Backdr-HG-carrying e-mails and the real thing: a file attachment that's named to look like a PDF.

This PDF actually is an EXE file – which can be determined by sight if you have your files set to display all extensions by default. Even though it claims to be a service agreement, this file's real purpose is to be an installer for Troj/Backdr-HG, which proceeds to compromise your computer's security with the same kind of backdoor exploit that's the bread-and-butter attack of many malware-specialized criminals.

The All-Too-Real Results of Troj/Backdr-HG's Fake Microsoft Agreement

Troj/Backdr-HG launches itself as a fake version of svchost.exe, and can be verified as fake due to its location: from the 'Documents and Settings\All Users' folder instead of the 'Windows\System32' folder. Troj/Backdr-HG also changes your Registry so that Troj/Backdr-HG can launch with Windows, after which Troj/Backdr-HG makes contact with a C&C server, conveniently bypassing your firewall security in the process of doing so.

Like any typical backdoor Trojan, Troj/Backdr-HG may be utilized to set up other kinds of malicious software, grant control of your files and installed programs over to criminals or steal private information. Troj/Backdr-HG's attacks don't display obvious symptoms, and SpywareRemove.com malware experts can't recommend any solution more effective than deleting Troj/Backdr-HG with a competent anti-malware product. This should be done ASAP, since the longer you allow your computer to be compromised by Troj/Backdr-HG, the greater the chances are that other types of malicious software will be installed and complicate the disinfection process.

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:

file.exe

File name: file.exe
Size: 32.56 KB (32562 bytes)
MD5: cb05c90678e9d18ce1fa691c6ba46849
Detection count: 73
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: September 19, 2012

%USERPROFILE%\Local Settings\Temp\mswyuru.bat

File name: mswyuru.bat
Size: 46.08 KB (46080 bytes)
MD5: dc2e36b11b28b0e64fcf8e10bc350be3
Detection count: 5
File type: Batch file
Mime Type: unknown/bat
Path: %USERPROFILE%\Local Settings\Temp
Group: Malware file
Last Updated: September 19, 2012

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