Macos malware runonly avoid detection five

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#Macos malware runonly avoid detection five software#
#Macos malware runonly avoid detection five code#

Nested run-only AppleScripts, for the win!Д«ut the cryptominer did not go entirely unnoticed. вЂњFrom what data we have it appears to be mostly targeted at Chineses/Asia-Pacific communities,вЂќ the spokesperson added. вЂњOSAMiner has been active for a long time and has evolved in recent months,вЂќ a SentinelOne spokesperson told ZDNetВ in an email interview on Monday.

#Macos malware runonly avoid detection five software#

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.

#Macos malware runonly avoid detection five install#

In July 2020, the security firm ESET reported a group of spoofed cryptocurrency trading apps was targeting devices running macOS to install malware called Gmera (see: Malicious Cryptocurrency Trading Apps Target MacOS Users).For more than five years, macOS users have been the targets of a sneaky malware operation that used a clever trick to avoid detection and hijacked the hardware resources of infected users to mine cryptocurrency behind their backs. The malware used an updated backdoor and multistage payloads as well as anti-detection techniques to help bypass security tools (see: Fresh MacOS Backdoor Variant Linked to Vietnamese Hackers). In December, researchers at Trend Micro uncovered a macOS backdoor variant linked to an advanced persistent threat group operating from Vietnam. Other security researchers have reported attacks targeting macOS devices to plant cryptominers or other types of malware.Д®arlier this month, researchers at Intezer Labs uncovered a campaign using a remote access Trojan dubbed ElectroRAT that had been stealing cryptocurrency from digital wallets on Windows, Linux and macOS platforms (see: ElectroRAT Malware Targets Cryptocurrency Wallets). The researchers say that once the malware has compromised a macOS device, it will seek to kill several processes, including Activity Monitor, which prevents the user from inspecting resource usage.

A script that downloads and sets up XMR-STAK-RX, a free, open-source monero RandomX miner software package.

An anti-analysis AppleScript to perform evasion tasks from certain consumer-level monitoring and cleanup tools.

#Macos malware runonly avoid detection five serial number#

A parent script for gathering the device serial number and for killing all the running processes in the device.A script to ensure persistence for the parent script.Once those embedded scripts were decompiled, the researchers determined the malware uses four methods to execute the run-only AppleScript: The Sentinel Labs team found the malware authors had embedded additional characters to obfuscate its processes. To decompile the malicious malware scripts, Sentinel Labs researchers had to use a relatively lesser-known AppleScript-disassembler project and another custom tool developed by the security firm.

#Macos malware runonly avoid detection five code#

OSAMiner uses run-only AppleScripts to make reverse-engineering of its code difficult, the researchers say. 'Recent versions of macOS.OSAMiner add greater complexity by embedding one run-only AppleScript inside another, further complicating the already difficult process of analysis.' Security Evasion

#Macos malware runonly avoid detection five full#

'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,' says Phil Stokes, a threat researcher at Sentinel Labs. OSAMiner's operators released the latest version of the cryptominer in 2020, but researchers only recently discovered the enhancements, according to the researchers' report.

The malware now uses multiple versions of AppleScript - a scripting language used in macOS devices - to support obfuscation. OSAMiner, which has been active since 2015, has been distributed through hacked video games, such as League of Legends, as well as compromised versions of software packages, including Microsoft Office for macOS, Sentinel Labs says. The latest iteration uses new techniques to help prevent detection by security tools, the researchers report. See Also: Fireside Chat | Zero Tolerance: Controlling The Landscape Where You'll Meet Your Adversaries Sentinel Labs researchers have identified an updated version of the cryptominer OSAMiner that targets the macOS operating system to mine for monero.