SafeUM
Home Blog Services Download Help About Recharge
EN
RU

Axarhöfði 14, 110 Reykjavik, Iceland

Iceland - 2015
SafeUM
Blog
Services
Download
Help
About
Recharge
Menu
EN
Lang
EN
RU
Archive
TOP Security!
4 Feb 2016

WordPress under attack by whack-a-mole ad-scam malware

Sucuri threat researcher Denis Sinegubko says a "massive" advertising scam campaign is affecting users visiting WordPress sites, injecting backdoors and constantly re-infecting sites.

The prolific virus-destroyer (@unmaskparasites) says writers are injecting code into all JavaScript files on a targeted WordPress sites. Sinegubko says first time visitors will cop a cookie that generates fraudulent advertising income for VXers.

"This past weekend we registered a spike in WordPress infections where hackers injected encrypted code at the end of all legitimate .js files," Sinegubko says. "This malware uploads multiple backdoors into various locations on the web server and frequently updates the injected code. "This is why many webmasters are experiencing constant re-infections post-cleanup of their .jsfiles." Sinegubko says the malware will infect all accessible .js files across all domains located on the same hosting account in what is known as cross-site contamination.

"It’s not enough to clean just one site or all but one – an abandoned site will be the source of the reinfection," he says. "In other words, you either need to isolate every sites or clean/update/protect all of them at the same time." The malware uses encrypted code which mutates between sites but decrypts into the same structure.

It sets an advertising cookie on infected machines which will inject invisible iframes into sites over a 24 hour period. Sinegubko notes the malware uses domain shadowing which is a favourite VXer trick to add malicious subdomains on legitimate second level domains after gaining access to DNS records.

Tags:
WordPress hackers information leaks
Source:
The Register
1733
Other NEWS
3 Jul 2020 safeum news imgage An encrypted messaging service has been infiltrated by police
4 May 2020 safeum news imgage Two-Factor Authentication ​What Is It and Why You Should Use It
12 Dec 2019 safeum news imgage Encryption is under threat - this is how it affects you
4 Nov 2019 safeum news imgage Should Big Decisions Be Based on Data or Your Intuition?
7 Jun 2018 safeum news imgage VPNFilter malware infecting 500,000 devices is worse than we thought
4 Jun 2018 safeum news imgage Hackers target Booking.com in criminal bid to steal hundreds of thousands from customers
1 Jun 2018 safeum news imgage Operator of World's Top Internet Hub Sues German Spy Agency
30 May 2018 safeum news imgage US says North Korea behind malware attacks
29 May 2018 safeum news imgage Facebook and Google targeted as first GDPR complaints filed
25 May 2018 safeum news imgage A new reason to not buy these cheap Android devices
24 May 2018 safeum news imgage Flaws in smart pet devices, apps could come back to bite owners
23 May 2018 safeum news imgage Google sued for 'clandestine tracking' of 4.4m UK iPhone users' browsing data
21 May 2018 safeum news imgage LocationSmart reportedly leaked phone location data onto the web
18 May 2018 safeum news imgage The SEC created its own scammy ICO to teach investors a lesson
17 May 2018 safeum news imgage Thieves suck millions out of Mexican banks in transfer heist
All news
SafeUM
Confidential Terms of Use Our technologies Company
Follow us
Download
SafeUM © Safe Universal Messenger

Axarhöfði 14,
110 Reykjavik, Iceland

Iceland - 2015