Home Malware Programs Trojans JS/BlacoleRef.W

JS/BlacoleRef.W

Posted: January 16, 2013

Threat Metric

Threat Level: 9/10
Infected PCs: 83
First Seen: January 16, 2013
OS(es) Affected: Windows

JS/BlacoleRef.W is a component of Blacole, popularly known as the Blackhole Exploit Kit or simply BEK. By redirecting you to other Blacole-related exploits, JS/BlacoleRef.W enables the exploit kit to install malicious software onto your PC after you've accessed a compromised or hostile website. SpywareRemove.com malware research team has particularly taken notice of JS/BlacoleRef.W-related attacks that have utilized faux LinkedIn-based spearheads, which pretend to offer social media links from a variety of sites. Clicking these links while using a vulnerable PC will allow JS/BlacoleRef.W to redirect you to other PC threats that can install malware without your permission or any symptoms. You should avoid sites that are known to harbor JS/BlacoleRef.W-related attacks and use anti-malware software to delete JS/BlacoleRef.W's payload after any potential contact with JS/BlacoleRef.W or other Blacole-contaminated sites.

JS/BlacoleRef.W: the New Message that's Just a New Problem for Your Hard Drive

The most recent JS/BlacoleRef.W attacks are associated with fake LinkedIn alerts that are hosted on malicious sites (although SpywareRemove.com malware analysts note that similar Blacole attacks also have been seen on nominally-innocent hacked websites, as well). These alerts claim to indicate that you have new messages to view on LinkedIn, although their actual content is a series of redirects towards the Blackhole Exploit Kit, with the help of JS/BlacoleRef.W.

Ultimately, JS/BlacoleRef.W attacks lead to the installation of configurable payloads, with a standard example being spyware programs that are designed to steal personal information. Financial information, such as bank account logins, is commonly targeted by attacks like JS/BlacoleRef.W's own. However, SpywareRemove.com malware research team also has seen BEK-installed malware launch other attacks, such as blocking programs, hijacking browsers, changing security settings or even using the infected PC to send malicious spam to other computers.

Clawing Your Way Out of the Pit that JS/BlacoleRef.W Kicks You Towards

JS/BlacoleRef.W, like many components of BEK, is a JavaScript-based PC threat that launches from your browser without installing itself onto your hard drive. Because attack vectors like JS/BlacoleRef.W's own are quite common, SpywareRemove.com malware experts typically encourage PC users to disable JavaScript (and similar exploitable features) while they're browsing untrustworthy or suspicious websites. This will prevent JS/BlacoleRef.W from loading the malicious content that lets BEK install malware onto your computer.

Besides any Java-related precautions, SpywareRemove.com malware experts strongly encourage you to scan your PC with anti-malware software immediately after any possible contact with JS/BlacoleRef.W (or other members of the Blacole family). Although traditional BEK-based payloads are high-level PC threats, they often fail to show any visible symptoms of their attacks, and only dedicated anti-malware products are certain to be able to detect rootkits, banking Trojans and similarly-advanced forms of malicious software.

A failure or even delay in reacting to JS/BlacoleRef.W attacks promptly can result in a loss of control over bank accounts, leaked confidential information or the exploitation of your PC's resources for future criminal acts.

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:



vt-upload-1KqCV File name: vt-upload-1KqCV
Size: 23.76 KB (23760 bytes)
MD5: 227cb6664ac28dd2b9412d79233bf63c
Detection count: 10
Group: Malware file
Last Updated: January 17, 2013
vt-upload-rETka File name: vt-upload-rETka
Size: 37.86 KB (37867 bytes)
MD5: 7d3943703c96d81d75fae54c4b90cb14
Detection count: 8
Group: Malware file
Last Updated: January 17, 2013
2bd23ea16102b70d3c69cc8eac1dc28a.text_hmtl File name: 2bd23ea16102b70d3c69cc8eac1dc28a.text_hmtl
Size: 18.85 KB (18852 bytes)
MD5: 2bd23ea16102b70d3c69cc8eac1dc28a
Detection count: 7
Mime Type: unknown/text_hmtl
Group: Malware file
Last Updated: January 17, 2013
jquery-easing-1.3.pack.js File name: jquery-easing-1.3.pack.js
Size: 7.52 KB (7528 bytes)
MD5: e3aa0b40ed452dff1c19a069396c2058
Detection count: 6
File type: JavaScript file
Mime Type: unknown/js
Group: Malware file
Last Updated: January 17, 2013
main.js File name: main.js
Size: 7.55 KB (7550 bytes)
MD5: a016388d1e734ee3413d15e1980d1145
Detection count: 5
File type: JavaScript file
Mime Type: unknown/js
Group: Malware file
Last Updated: January 17, 2013
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