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#INTEGO MAC SECURITY BLOG CODE#
The complex-looking obfuscation above uses a lot of simple substitution, so with a bit of patience one can simplify the code by hand, and voilà. Obfuscated JavaScript redirect code leading to an OSX/CrescentCore fake alert page One page in the redirection chain was caught using obfuscated JavaScript code to conceal the fact that it was a redirector script. Regarding the aforementioned rogue Google search result link, the redirection through multiple pages is accomplished through various methods.
#INTEGO MAC SECURITY BLOG HOW TO#
See also our article about how to tell if an Adobe Flash Player update is legitimate. Of course, the majority of casual Internet users aren’t aware of these facts, and malware makers love to prey on users’ lack of awareness. Nearly all sites have stopped relying on Flash, as Adobe is discontinuing it the company plans to no longer release security updates for Flash after 2020. You will never see a legitimate Flash Player update that looks similar to this in your browser-especially if you’re using Google Chrome, which has its own built-in version of Flash that gets updated automatically whenever the browser updates itself.Īs a general rule, nobody should be installing Flash Player in 2019-not even the real, legitimate one. copyright laws.Ī fraudulent site distributing OSX/CrescentCore, disguised as Flash Player.
![intego mac security blog intego mac security blog](https://www.intego.com/mac-security-blog/wp-content/uploads/2012/09/VB-iOS-icon.png)
The new malware was first observed linked from a site purporting to share digital copies of new comic books for free-one of many shady sites that flagrantly violates U.S. Mac users should beware that they may encounter it, even via seemingly innocuous sources such as Google search results. The team at Intego has observed OSX/CrescentCore in the wild being distributed via numerous sites. Is this malware in the wild? How does it spread?
#INTEGO MAC SECURITY BLOG INSTALL#
Depending on the variant, the Trojan installer may install rogue software known as “Advanced Mac Cleaner” ( OSX/AMC) or install a malicious Safari browser extension. If the malware determines that it’s running within a VM environment or with anti-malware software present, it will simply exit and not proceed to do anything further.įor Mac users without antivirus software, however, the Trojan will proceed to install a LaunchAgent-a persistent infection.Ī second variant of this malware is currently under analysis. The OSX/CrescentCore Trojan app also checks to see whether any popular Mac antivirus programs are installed. Malware analysts often examine malware inside a VM to avoid unintentionally infecting their own computers while working with dangerous files, so malware authors sometimes implement VM detection and behave differently to make it more difficult to analyze the malware’s behavior.
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dmg disk image and opens the Player app (which has a Flash Player icon), the Trojan horse will first check to see whether it is running inside a virtual machine (VM). OSX/CrescentCore’s initial stage is a Trojan horse designed to look like a Flash installer. However, unlike the typical, everyday, fake Flash Player updater, OSX/CrescentCore has some extra capabilities in an effort to make it more difficult for antivirus software to detect, and more difficult for malware analysts to examine and reverse engineer. dmg disk image, masquerading as an Adobe Flash Player installer. OSX/CrescentCore is delivered as a Trojan horse application on a. What does OSX/CrescentCore do? What makes it unique? Is this malware in the wild? How does it spread?.What does OSX/CrescentCore do? What makes it unique?.Intego customers are protected from OSX/CrescentCore and the many other Mac malware threats discovered in June.Ĭontinue reading to learn more, including:
#INTEGO MAC SECURITY BLOG DOWNLOAD#
Intego has observed this malware in multiple places across the Web, from sketchy copyright-infringing download sites to rogue, high-ranking, non-sponsored Google search results links. Hot on the heels of Intego’s discovery of OSX/Linker and being the first to detect OSX/NewTab, the Intego team has discovered in the wild another previously unknown bit of malware that installs other unwanted software-but only if you’re not running third-party endpoint protection software, and only if your operating system isn’t running inside a virtual machine. Meet OSX/CrescentCore, the next generation of fake Flash Player malware-now redesigned to evade antivirus detection. The show is approximately 19 minutes long.Malware OSX/CrescentCore: Mac malware designed to evade antivirus
![intego mac security blog intego mac security blog](https://www.bloggskolan.se/wp-content/uploads/2020/02/intego-600x385.jpg)
Then we look for and changed passwords involved in known breaches (haveibeenpwned - link in show notes).
#INTEGO MAC SECURITY BLOG PASSWORD#
After implementing 2FA, we should now be setting up and using a password manager. Picking up from the last episode, we are now delving in to the security measures we can implement to make ourselves a less attractive for Evil Steve.