Jamf Threat Labs flagged a new version of the PamStealer macOS infostealer that can only be unpacked with the attacker's server. Earlier variants embedded payload key material directly in the JavaScript for Automation dropper, but the latest completes a key exchange with the server before the payload unwraps, so it cannot be recovered from a static sample alone. The lure also changed: where July and August versions impersonated the Maccy, Scoppr, and Nancy Clipboard apps, victims are now drawn to a fake site advertising a non-existent cryptocurrency wallet called Wavel. Clicking Download for macOS retrieves a disk image whose AppleScript opens Script Editor with instructions to run the dropper.
Jamf Threat Labs found a new macOS infostealer, PamStealer, that impersonates Maccy, a popular open-source clipboard manager, through a fake website. Victims download what looks like a Maccy installer but is a malicious AppleScript that quietly fetches a Rust-based stealer. Its standout trick is how it grabs the login password: it shows a native-looking prompt saying "Maccy wants to make changes" and validates whatever the user types against macOS's own Pluggable Authentication Modules, so it only keeps a confirmed-correct password and avoids the noisy process calls other stealers make. The second stage hides as Finder, encrypts its traffic, and delays its Full Disk Access request to avoid suspicion.
TrustStrike Labs