![]() Symptoms included higher than usual CPU, system freeze and problems trying to open the system Activity Monitor.app. Investigations at the time concluded that macOS.OSAMiner, as we have dubbed it, had likely been circulating since 2015, distributed in popular cracked games and software such as League of Legends and MS Office.Īlthough some IoCs were retrieved from the wild and from dynamic execution by researchers, the fact that the malware authors used run-only AppleScripts prevented much further analysis. Indeed, 360 MeshFire Team reported that the malicious applications:Ī similar conclusion was reached by another Chinese security researcher trying to dynamically analyse a different sample of macOS.OSAMiner in 2020, noting that “No reverse method has been found…so the investigation ends here” Years runonly applescripts to avoid detection cracked# In late 2020, we discovered that the malware authors, presumably building on their earlier success in evading full analysis, had continued to develop and evolve their techniques. ![]() Years runonly applescripts to avoid detection full# Recent versions of macOS.OSAMiner add greater complexity by embedding one run-only AppleScript inside another, further complicating the already difficult process of analysis. However, with the help of a little-known applescript-disassembler project and a decompiler tool we developed here at SentinelLabs, we have been able to reverse these samples and can now reveal for the first time their internal logic along with further IoCs used in the campaign. A Malicious Run-Only AppleScript (or Two) We believe that the method we used here is generalizable to other run-only AppleScripts and we hope this research will be helpful to others in the security community when dealing with malware using the run-only AppleScript format. While malware hunting on VirusTotal, we came across the following property list:ĩad23b781a22085588dd32f5c0a1d7c5d2f6585b14f1369fd1ab056cb97b0702Īs noted above, we have seen this before in 2018 and earlier in 2020. In the 2018 version, the malware tries to disguise itself as belonging to both “apple.Google” and “apple.Yahoo”: The older persistence agents are almost identical save for the labels and names of the targeted executable. Years runonly applescripts to avoid detection code#.Years runonly applescripts to avoid detection full#.Years runonly applescripts to avoid detection cracked#.Return 1 -will wait 1 second before checking again Part IV: Scripting Mac OS 9 Control Panels and Extensions. Set app_list to every application process whose name contains app_name AppleScript is primarily used and also describes the relevance to AppleScript of Apple events. Note that this will only work when the script is launched as an application saved with the "Stay Open" box checked, because the idle event will not be repeatedly called otherwise. You could also rework this to avoid using the idle event by putting the code from my idle handler into a loop and calling "delay 1" at the end of the loop. (But then you'd need to implement your own way to quit it.) There is much less attention in the security field on AppleScript a built-in macOS technology despite the fact it’s been around for as long as Python and predates macOS 10 itself by 8 or 9 years. ![]() Using Applescript to make selections from dropdown menu and Apply Im trying.Īs I’ll show in this post, AppleScript is widely used by offensive actors. System Events is located at "/System/Library/CoreServices/System Events.app". for Mac OS X Im looking to record lectures with my MacBook Pro this year. You may want to check out its scripting dictionary.
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