Trojan:Win32/Grymegat

Posted: January 30, 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:	9/10
Infected PCs:	29

First Seen:	January 30, 2013
OS(es) Affected:	Windows

Trojan:Win32/Grymegat is a group of Trojans that include both ransomware Trojans and backdoor Trojans with potential malware-downloading capabilities. Symptoms of Trojan:Win32/Grymegat attacks may include fraudulent FBI-themed pop-up alerts, an inability to access your desktop, blocked applications and/or disabled administrator account-based security features. Variants of Trojan:Win32/Grymegat are specific to Windows and are unable to affect other OSes like Linux or Mac, although those operating systems are vulnerable to similar, albeit distinct PC threats. As a malicious and illegal program, any variant of Trojan:Win32/Grymegat should be deleted as soon as you can gain access to the anti-malware programs that can remove Trojan:Win32/Grymegat without any hassle.

Why Trojan:Win32/Grymegat's Threats of Prison Have Zero Credibility

One major variant of Trojan:Win32/Grymegat, Trojan:Win32/Grymegat.A, is a traditional ransomware Trojan that displays pop-ups similar to those of the Reveton family – a family that's responsible for thousands of successful profiteering attacks throughout the world. By displaying a fake FBI alert that covers your screen, Trojan:Win32/Grymegat claims that your PC has been involved in illegal media-distribution activities and demands that you pay a MoneyPak fine to avoid even worse penalties.

The actual FBI doesn't have any affiliation with Trojan:Win32/Grymegat's warning message, which is displayed automatically without any effort to detect the apparent crimes that Trojan:Win32/Grymegat claims you've committed. SpywareRemove.com malware researchers also note the usage of MoneyPak and similar voucher systems for payment of legal fees as one of the most obvious telltale signs of an illegal ransomware Trojan that doesn't have any right to your money. In no scenario should you ever be tempted to pay Trojan:Win32/Grymegat to unlock your computer, as opposed to simply using standard security techniques to disable Trojan:Win32/Grymegat so that your anti-malware software can remove Trojan:Win32/Grymegat.

The Other Side of Trojan:Win32/Grymegat: an Administrator for Crime

In addition to ransomware-style attacks, Trojan:Win32/Grymegat variants like Trojan:Win32/Grymegat.B also may use other attacks against your PC. In contrast to easily-noticed FBI warnings, Trojan:Win32/Grymegat.B avoids obvious symptoms for its attacks – since its intention is to compromise your computer by opening a backdoor connection to a remote server. From this server, Trojan:Win32/Grymegat.B may transfer stolen information or download other malware that can be installed without your permission.

SpywareRemove.com malware experts consider this variant of Trojan:Win32/Grymegat to be notable for its ability to disable administrator account-based security features, which will allow any programs – including Trojan and other PC threats – to be launched with full admin privileges.

Trojan:Win32/Grymegat.B also will disguise its various files as Windows components, and SpywareRemove.com malware researchers especially suggest that you use anti-malware software for detecting and removing this variant of Trojan:Win32/Grymegat. In the case of ransomware Trojan versions of Trojan:Win32/Grymegat, you also may need to use Safe Mode or other methods of disabling Trojan:Win32/Grymegat before you can access appropriate anti-malware solutions.

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:

Opera.exe

File name: Opera.exe
Size: 99.84 KB (99840 bytes)
MD5: 4a4d8c41e221a5281e43f15d6a2cf727
Detection count: 8
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: February 13, 2013