Troj/FlsplyBD-A

Posted: April 30, 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:	2/10
Infected PCs:	96

First Seen:	April 30, 2012
OS(es) Affected:	Windows

Troj/FlsplyBD-A (also known by the alias of Trojan-Downloader.Win32.Agent.ujhb) is a backdoor Trojan that's installed by the Windows-specific Trojan Mal/Cleaman-B, which is, itself, installed in a series of Java-based browser attacks or drive-by-downloads. Although Troj/FlsplyBD-A is limited to attacking Windows, Troj/FlsplyBD-A-related online attacks are noted for their willingness to detect and alter their payloads to install different Trojans for other operating systems, particularly Mac computers. Troj/FlsplyBD-A attempts to gather information about your PC, conceals its components with inaccurate file names (such as 'adobeup.exe') and includes traditional backdoor functions that could allow criminals to take over your computer. A successful Troj/FlsplyBD-A infection places your computer at high-risk of privacy and security-related attacks, and SpywareRemove.com malware analysts recommend the use of an anti-malware program to remove Troj/FlsplyBD-A if you're unable to take the proper precautions to keep Troj/FlsplyBD-A off of your hard drive in the first place.

The Life of a Troj/FlsplyBD-A-infected PC

Computers that are compromised by Troj/FlsplyBD-A (limited to Windows-based PCs, since other OSes have separately-designed payloads in Troj/FlsplyBD-A's installation attacks) are unlikely to display obvious symptoms of Troj/FlsplyBD-A's attacks. However, Troj/FlsplyBD-A has been noted to perform a variety of hostile actions and can include capabilities that can be significant perils to your computer's safety, including:

Troj/FlsplyBD-A loads a fake Adobe update executable, named 'adobeup.exe,' after its placement in your Startup menu.
Troj/FlsplyBD-A contacts the Microsoft website to gather identifiable data about your PC, especially security update-related information that could be used to refine future attacks.
Like many Trojans, Troj/FlsplyBD-A will also download other files from a generalized remote server that can be installed as PC threats – common payloads in this fashion include keyloggers, password-stealing spyware, browser hijackers and fake security programs.
Troj/FlsplyBD-A launches without your permission and attempts to evade both detection and removal by normal methods.

Like all backdoor Trojans, Troj/FlsplyBD-A may circumvent your security software, upload/download files without your permission or allow criminals to have some influence (potentially up to total control) over your computer. The Trojan that installs Troj/FlsplyBD-A is identified as Mal/Cleaman-B and is preceded by two separate browser exploit-based script attacks: Mal/20113544-A and Mal/JavaCmC-A.

How to Step Around Troj/FlsplyBD-A's Flytrap

As of February 14th 2012, Windows, Unix and Linux-based PCs are protected against the drive-by-download attack that installs Troj/FlsplyBD-A. Most Mac-based computers have also acquired protection since mid-April, although Mac operating systems below version 10.6 are still vulnerable. Basic web-browsing protection can help to keep your computer safe from Troj/FlsplyBD-A-related attacks, and SpywareRemove.com malware researchers particularly recommend:

Avoiding websites with poor reputations or a recent history of being compromised by hacker attacks.
Disabling JavaScript when it's not in use.
Keeping all relevant software (including your browser, JavaScript package, OS and security programs) updated to minimize the presence of security holes.
Keeping anti-malware programs active at all times to defend against possible Troj/FlsplyBD-A installation attacks before they can finish installing Troj/FlsplyBD-A onto your computer.

Troj/FlsplyBD-A

Threat Metric

The Life of a Troj/FlsplyBD-A-infected PC

How to Step Around Troj/FlsplyBD-A's Flytrap

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