![]() Further, we observed that many of them are aimed with sophisticated anti-analysis techniques like one avoiding the bash execution to stay under the radar. Only Ikarus and ESET-NOD32 products can recognize two of these unknown samples at the time of finding. Using Mac-A-Mal, we discovered 71 unknown Adware under 8 legitimate certificates, 2 keyloggers, and 1 trojan involved in the APT32 OceanLotus, which are unknown to many Anti-virus vendors for a long time. At the user level, we make specific handlers to deal with various file types. During sample execution, the analysis engines are customized to prevent analysis traces left on the system while maximizing malware behavior exposure using memory patching and virtual machine hardening techniques. At the kernel level, we implement system call hooking and process tracing techniques to capture system calls and their arguments. It consists of two main modules implemented at user-space and kernel-space. Our goal is to design and implement a malware analysis framework, which can automatically capture malware behavior in an adversary environment, called Mac-A-Mal. VirusTotal Box of Apples sandbox Footnote 4 executes malware to show screenshots of what an analyst would see, also reports network traffic and file operations but the underlying technology itself is enclosed. The closed source FireEye monitor Footnote 3 use a kernel extension which is resistant to anti-analysis techniques, but requires human intervention. Cuckoo sandbox does not support anti-analysis mitigation and human interaction under the macOS environment. For example, the open source Mac-sandbox is vulnerable to anti-analysis techniques such as Dylib name verification. There exist tools which support malware analysis of Windows, Linux or Android applications, while, investigation of macOS malware and development of tools supporting monitoring their behavior is still limited in functionalities or anti-analysis resistance, or both. Footnote 1 In 2016, Mac malware grew 744% with around 460,000 instances detected, says McAfee report and increases 270% between 20 (Table 1). Mac devices saw more malware attacks in 2015 than the past five years combined, according to a cyber-security report from the Bit9 and Carbon Black Threat Research team. In 2014, the first known ransomware appeared, and other ransomware has been discovered as Software-as-a-Service (SaSS), where malware is available as requests. "The fact that this new Linux malware toolset has been in the wild for the better part of the last decade without having been detected and publicly documented prior to this report makes it highly probable that the number of impacted organizations is significant and the duration of the infections lengthy.Contrary to popular belief, the Mac ecosystem is not unaffected by malware. "This report detailed how this quintet of threat actor groups have managed to successfully infiltrate and maintain persistence on servers that comprise the backbone of the majority of large data centers using a newly identified Linux malware toolset obfuscated by a kernel-level module rootkit, all of which allows them to remain nearly undetectable on the infected systems," the report read. Since users install the pirated software themselves, this bypasses Mac OS protections.Īnd interesting that it went undetected for five years. ![]() Named OSAMiner, the malware has been distributed in the wild since at least 2015 disguised in pirated (cracked) games and software such as League of Legends and Microsoft Office for Mac, security firm SentinelOne said in a report published this week.
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