• Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
MUST READ

Microsoft uncovers macOS flaw allowing bypass TCC protections and exposing sensitive data

 | 

U.S. CISA adds Cisco ISE and PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog

 | 

Critical WordPress Post SMTP plugin flaw exposes 200K+ sites to full takeover

 | 

Scattered Spider targets VMware ESXi in using social engineering

 | 

China-linked group Fire Ant exploits VMware and F5 flaws since early 2025

 | 

Allianz Life data breach exposed the data of most of its 1.4M customers

 | 

SECURITY AFFAIRS MALWARE NEWSLETTER ROUND 55

 | 

Security Affairs newsletter Round 534 by Pierluigi Paganini – INTERNATIONAL EDITION

 | 

Law enforcement operations seized BlackSuit ransomware gang’s darknet sites

 | 

Arizona woman sentenced for aiding North Korea in U.S. IT job fraud scheme

 | 

Operation CargoTalon targets Russia’s aerospace with EAGLET malware,

 | 

Unpatched flaw in EoL LG LNV5110R cameras lets hackers gain Admin access

 | 

Koske, a new AI-Generated Linux malware appears in the threat landscape

 | 

Mitel patches critical MiVoice MX-ONE Auth bypass flaw

 | 

Coyote malware is first-ever malware abusing Windows UI Automation

 | 

SonicWall fixed critical flaw in SMA 100 devices exploited in Overstep malware attacks

 | 

DSPM & AI Are Booming: $17.87B and $4.8T Markets by 2033

 | 

Stealth backdoor found in WordPress mu-Plugins folder

 | 

U.S. CISA adds CrushFTP, Google Chromium, and SysAid flaws to its Known Exploited Vulnerabilities catalog

 | 

U.S. CISA urges FCEB agencies to fix two Microsoft SharePoint flaws immediately and added them to its Known Exploited Vulnerabilities catalog

 | 
  • Home
  • Cyber Crime
  • Cyber warfare
  • APT
  • Data Breach
  • Deep Web
  • Digital ID
  • Hacking
  • Hacktivism
  • Intelligence
  • Internet of Things
  • Laws and regulations
  • Malware
  • Mobile
  • Reports
  • Security
  • Social Networks
  • Terrorism
  • ICS-SCADA
  • POLICIES
  • Contact me
  • Home
  • Breaking News
  • Cyber Crime
  • Hacking
  • Malware
  • Emergency. Hundreds of compromised WordPress sites serve TeslaCrypt ransomware

Emergency. Hundreds of compromised WordPress sites serve TeslaCrypt ransomware

Pierluigi Paganini February 05, 2016

Operators running websites based on the WordPress must be aware of a spike in the number of compromised platforms used to deliver the TeslaCrypt ransomware.

Administrators running websites based on the popular WordPress CMS must be aware of a spike in hacks that are resulting in the silent delivery of ransomware to the visitors.

According to the experts at the Heimdal Security, threat actors hacked WordPress-based sites to redirect victims to other domains hosting the Nuclear Exploit Kit.

People who visit the compromised WordPress sites using out-of-date versions of popular software, including Flash Player, Adobe Reader and Internet Explorer, can be infected with the Teslacrypt ransomware. The experts at Heimdal discovered that the attackers behind the current WordPress compromises were exploiting an unidentified vulnerability with obfuscated JavaScript. The code redirects victim to the domain chrenovuihren that serves an online ad that forces traffic to the site hosting Nuclear.

“Our team warns that a disproportionate amount of websites that employ the WordPress platform have been compromised by cyber criminals.  Hundreds of WordPress websites spreading malware. The attackers fed obfuscated Javascript code to these websites. The users who end up on the hacked websites are redirected on a domain called “chrenovuihren” via multiple servers.” states a blog post published by Heimdal Security.

Wordpress spike payload teslacrypt

It isn’t the first time that the Nuclear Exploit Kit is used to drop ransomware, in November it Kit has been used for the first time to serve the ransomware CryptoWall 4.0, meanwhile in the past criminal groups used it to serve instances of the CryptoWall 3.0.

The Heimdal Security researchers identified three IP addresses of Nuclear EK gateways:

159,203.24 [.] 40
164,132.80 [.] 71
162,243.77 [.] 214

The campaign relies on a number of domains to spread the malware, the domains are all subdomains of the chrenovuihren.

“The campaign makes use of several domains to deliver the malicious code, which is why active servers can quickly change depending on which IP as DNS lookup they use,” continues the post.

“We have already blocked more than 85 domains that are being actively used in this campaign, and the list will most likely increase.”

The bad news it the low detection rate for this threat, just 2 of 66 antivirus solutions on VirusTotal are able to detect the malicious agent.

This last campaign based on compromised WordPress-based websites comes a few days later another massive hacking campaign has been identified by experts at Sucuri, the researchers at Heimdal speculate the involvement of the same threat actors for both campaigns.

Website owners based on WordPress must protect their servers and let me share with you, once again, the following key recommendations to get protected against ransomware:

  • Keep software and your operating system updated at all times
  • Backup your data, do it often and in multiple locations
  • Use a security tool that can filter your web traffic and protect you against ransomware, which traditional antivirus cannot detect or block.

Pierluigi Paganini

(Security Affairs – TeslaCrypt ransomware, Nuclear Exploit Kit)


facebook linkedin twitter

CryptoWall Cybercrime Hacking Nuclear exploit kit ransomware TeslaCrypt Wordpress

you might also like

Pierluigi Paganini July 29, 2025
Microsoft uncovers macOS flaw allowing bypass TCC protections and exposing sensitive data
Read more
Pierluigi Paganini July 28, 2025
U.S. CISA adds Cisco ISE and PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog
Read more

leave a comment

newsletter

Subscribe to my email list and stay
up-to-date!

    recent articles

    Microsoft uncovers macOS flaw allowing bypass TCC protections and exposing sensitive data

    Hacking / July 29, 2025

    U.S. CISA adds Cisco ISE and PaperCut NG/MF flaws to its Known Exploited Vulnerabilities catalog

    Security / July 28, 2025

    Critical WordPress Post SMTP plugin flaw exposes 200K+ sites to full takeover

    Security / July 28, 2025

    Scattered Spider targets VMware ESXi in using social engineering

    Cyber Crime / July 28, 2025

    China-linked group Fire Ant exploits VMware and F5 flaws since early 2025

    Hacking / July 28, 2025

    To contact me write an email to:

    Pierluigi Paganini :
    pierluigi.paganini@securityaffairs.co

    LEARN MORE

    QUICK LINKS

    • Home
    • Cyber Crime
    • Cyber warfare
    • APT
    • Data Breach
    • Deep Web
    • Digital ID
    • Hacking
    • Hacktivism
    • Intelligence
    • Internet of Things
    • Laws and regulations
    • Malware
    • Mobile
    • Reports
    • Security
    • Social Networks
    • Terrorism
    • ICS-SCADA
    • POLICIES
    • Contact me

    Copyright@securityaffairs 2024

    We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept All”, you consent to the use of ALL the cookies. However, you may visit "Cookie Settings" to provide a controlled consent.
    Cookie SettingsAccept All
    Manage consent

    Privacy Overview

    This website uses cookies to improve your experience while you navigate through the website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities...
    Necessary
    Always Enabled
    Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.
    Non-necessary
    Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. It is mandatory to procure user consent prior to running these cookies on your website.
    SAVE & ACCEPT