- #Best malware protection for mac 2017 install#
- #Best malware protection for mac 2017 software#
- #Best malware protection for mac 2017 code#
- #Best malware protection for mac 2017 password#
In a virtual machine, this command will not return the model identifier for the hardware, but will instead return a value specific to the virtualization software being used. They will also parse the output from the shell command sysctl hw.model for the word “Mac”, terminating if that is not found. Both include three methods for determining whether they are being analyzed by a researcher, in which case they shut down and do not display their malicious behaviors.įirst, they will check to see if they are being run by a debugger, using a call to ptrace. Analysis avoidanceĪlthough neither of these programs is particularly sophisticated, they both do include some reasonably effective analysis avoidance features.
#Best malware protection for mac 2017 code#
If the attacker pays for the malware, they will get additional capabilities, such as more general file exfiltration, access to social media, help with packaging the executable into a Trojan form (such as a fake image file), and code signing.
#Best malware protection for mac 2017 password#
This requires that the attacker knows the password for the target Mac in advance. In the case of keylogging, the malware requires an admin password, which can be provided in the email requesting a copy of the malware.
MacSpy is fairly simple spyware, which gathers data into temporary files and sends those files periodically back to a Tor command & control (C&C) server via unencrypted http. However, the key creation process involves a random number and the resulting key is apparently not saved to the hard drive or communicated back to the authors in any way, making it impossible to decrypt the files except via brute force.Īfter encryption, the malware will display a pop-up alert informing the user of what must be done to decrypt the files, and will continue to reappear even if the user clicks the “Destroy My Mac” button. The malware does not save any copies of that information to files on the hard drive, as is typical of most ransomware. As happened with KeRanger, which had a 3-day delay before encrypting, this delay will likely mean that few people who are using security software will actually be affected, as the malware will probably be detected before it encrypts anything.įurther, the encryption uses a symmetric key – meaning that the same key is used both to encrypt and to decrypt – that is only 8 bytes in length, making it rather weak and relatively easy to decrypt. MacRansom is created with a custom “trigger date,” after which time the malware detonates and encrypts the files in the user’s home folder, as well as on any connected volumes, such as external hard drives.
#Best malware protection for mac 2017 install#
Some recent malware has had the capability to customize the install locations and names, but there’s no indication in the reports from Fortinet and AlienVault that such a feature is available in MacSpy or MacRansom, making these quite easy to detect.
FS_Store file both have names starting with a period, they are hidden from view unless the user has done something to show invisible files.Īs part of the installation, these programs also create LaunchAgent files for persistence – a not at all original method.
The programs provided to both Fortinet and AlienSpy were simple command-line executable files that, when run, copy themselves into the user’s Library folder.īecause the. These two offerings – a backdoor named MacSpy and a ransomware app named MacRansom – were discovered by Catalin Cimpanu of Bleeping Computer on May 25.Ĭimpanu evidently had some trouble getting hold of samples, but on Friday analysis of MacRansom was posted by Fortinet and analysis of MacSpy was posted by AlienVault.īoth of these malware programs were advertised through Tor websites, claiming them to be “The most sophisticated Mac spyware/ransomware ever, for free.” Neither programs were directly available, but could only be obtained by emailing the authors at protonmailcom email addresses.ĭespite the claims of sophistication, these malware programs are not particularly advanced. A couple weeks ago, two new Malware-as-a-Service (MaaS) offerings for the Mac became available.
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