Mal/JavaJar-B
Posted: January 11, 2013
Threat Metric
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: | 7/10 |
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Infected PCs: | 62 |
First Seen: | January 11, 2013 |
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OS(es) Affected: | Windows |
Mal/JavaJar-B is a Java archive that uses a recently-identified Java exploit to attack vulnerable computers and, in most cases, install malicious software. Although Mal/JavaJar-B is a very new PC threat, Mal/JavaJar-B already has been incorporated into several exploit kits, including the Cool EK and the NuclearPack Exploit Kit. Attacks by Mal/JavaJar-B are likely to show no symptoms and will launch after unprotected exposure to malicious or compromised websites. SpywareRemove.com malware researchers can recommend no better course of action than to keep anti-malware security aboard to block Mal/JavaJar-B-related attacks as they appear and, if necessary, to remove Mal/JavaJar-B's payload from your PC. However, for sufficiently paranoid PC users, Java-eschewing security options also may be on the table – at least until a patch has been issued to correct Mal/JavaJar-B's vulnerability.
Mal/JavaJar-B: the Invisible Security Problem with Your Friendly Web Content
Java, JavaScript and other website-friendly content platforms often are abused for the sake of drive-by-downloads and related browser attacks, and Mal/JavaJar-B is just one of the most recent examples of how such PC threats take forms that can't be thwarted just by patching your software. Using a zero-day vulnerability that has been identified but not corrected by Java's coding team, Mal/JavaJar-B will attack any vulnerable PC that allows Java to run automatically on their web browser.
Disabling or even deleting Java can be used as a definitive means of protecting your PC from Mal/JavaJar-B. In cases where this isn't practical (due to Mal/JavaJar-B's widespread use as a content delivery platform), SpywareRemove.com malware experts suggest that you use strong anti-malware and browser-based security features that can, hopefully, detect and block activity that's related to Mal/JavaJar-B.
In normal scenarios, Mal/JavaJar-B is just one of several potential exploits that are loaded by a website-hosted exploit kit package that attempts to detect the software vulnerabilities of your PC. Visiting a hostile or hacked site with an unprotected computer is all that's necessary to be targeted by Mal/JavaJar-B and related attacks, which usually will install malicious software (via drive-by-download attacks) without any obvious symptoms of the action.
All major browsers and versions of Windows can be considered in danger from such attacks. However, SpywareRemove.com malware researchers also have seen a minority of similar PC threats that target alternative systems (like Linux and Mac).
The Risks that You Play with When You Allow Mal/JavaJar-B Into Your PC
Like similar software vulnerabilities, Mal/JavaJar-B doesn't have any hard limits on the type of malware that Mal/JavaJar-B can be used to install. However, SpywareRemove.com malware researchers have taken note of some of the most likely PC threats to benefit from Mal/JavaJar-B, according to the recent attack patterns from the latest malware-distributing campaigns:
- Ransomware Trojans that alter their fake pop-up alerts to conform to the details of your IP address's associated country, block you from using other programs and request that you pay an (illegal) online or voucher-based fine.
- Banking Trojans and similar spyware-based Trojans that use concealed attacks to steal personal information. Bank account credentials and other account-based login data are favored targets.
- Trojans with adverse effects on your computer's security, such as disabling security features, blocking security-related programs or redirecting you away from PC security websites.
In all cases, SpywareRemove.com malware experts recommend that you scan your PC with suitable anti-malware products as soon as possible after any suspected contact with Mal/JavaJar-B.
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:1ace845d-3e2a5bcc
File name: 1ace845d-3e2a5bccSize: 3.51 KB (3511 bytes)
MD5: f94dbab99eaabb8a70806322c1eca656
Detection count: 49
Group: Malware file
Last Updated: January 15, 2013
jimmdemy.jar
File name: jimmdemy.jarSize: 9.46 KB (9465 bytes)
MD5: be2bcd6c3f2aee6432358e1fb37a8dc2
Detection count: 48
Mime Type: unknown/jar
Group: Malware file
Last Updated: January 15, 2013
jar_cache53600.tmp
File name: jar_cache53600.tmpSize: 9.29 KB (9290 bytes)
MD5: 69cbc609f3f2f2828a9cfb3d0c02f0b2
Detection count: 41
File type: Temporary File
Mime Type: unknown/tmp
Group: Malware file
Last Updated: January 15, 2013
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