A brand new malware household concentrating on macOS programs has emerged with superior detection evasion strategies and multi-stage assault chains.
Named DigitStealer, this data stealer makes use of a number of payloads to steal delicate information whereas leaving minimal traces on contaminated machines.
The malware disguises itself as legit software program and makes use of intelligent strategies to bypass Apple’s safety protections.
DigitStealer spreads by way of pretend variations of widespread macOS functions. The malware was found in an unsigned disk picture file referred to as DynamicLake.dmg, pretending to be a legit utility.
Customers are tricked into working a file labeled “Drag Into Terminal.msi” which begins the an infection course of.
On the time of discovery, no antivirus engines on VirusTotal detected this menace, making it extraordinarily harmful.
What makes this malware stand out is its use of superior {hardware} checks to keep away from working on digital machines or older Mac computer systems.
Jamf safety researchers recognized that DigitStealer particularly targets newer Apple Silicon programs, significantly M2 chips and above, whereas avoiding Intel-based Macs and even M1 gadgets.
The malware performs intensive system checks earlier than executing its foremost payload.
The an infection begins with a easy bash command that downloads an encoded script from a distant server. As soon as decoded, this script performs a number of verification steps to make sure it runs solely on bodily Mac computer systems with particular {hardware} options.
Malware workflow (Supply -Jamf)
The malware checks the system locale and exits if it detects sure nations, probably to keep away from prosecution.
Detection Evasion By means of Superior {Hardware} Checks
DigitStealer makes use of refined strategies to detect digital machines and evaluation environments. The malware queries {hardware} data utilizing system instructions and searches for key phrases like “Digital” or “VM” within the output.
If detected, the malware instantly stops execution. Probably the most fascinating side entails checking for particular Apple Silicon options utilizing the next instructions:-
sysctl -n hw.elective.arm.FEAT_BTI
sysctl -n hw.elective.arm.FEAT_SSBS
sysctl -n hw.elective.arm.FEAT_ECV
These instructions confirm whether or not superior ARM processor options exist on the goal system. Solely M2 or newer chips have these capabilities, successfully limiting infections to the most recent Mac computer systems.
This method helps the malware keep away from detection by safety researchers who usually use digital machines or older {hardware} for evaluation.
After passing all verification checks, DigitStealer downloads 4 separate payloads from distant servers.
Every payload has a selected function, from stealing browser credentials and cryptocurrency wallets to modifying legit functions like Ledger Dwell.
The malware makes use of legit Cloudflare providers to host payloads, making detection and blocking harder.
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