Malware

AmnesiaStealer

0 mentions in 7 days · 0 in 30 days · 4 total · first seen Aug 14, 2026 · last Aug 16, 2026

Timeline4 articles

Security Affairs newsletter Round 590 by Pierluigi Paganini

Weekly Security Affairs newsletter roundup aggregating top cybercrime, malware, APT and AI security stories including ExfilSquad, Kimwolf v7 and Kimsuky AI use.

This is the Round 590 weekly newsletter from Security Affairs, linking to the week's major stories rather than reporting a single incident. Headlines include ExfilSquad extortion, a 7.3M chess.com record leak, Kimwolf botnet v7, SharePoint exploitation after a public PoC, Kimsuky integrating AI, and China-linked autonomous-style attacks. It is a digest and promotional item with no standalone technical details.

Security AffairsAug 16, 08:31 UTC · Aug 16, 2026Industry

AmnesiaStealer Hijacks Chromium Sessions to Give Attackers Live Browser Control on macOS

Jamf details AmnesiaStealer, a new Rust-based macOS infostealer that hijacks Chromium sessions for live attacker-controlled browser access and steals Keychain data.

Jamf Threat Labs disclosed a three-stage macOS infostealer called AmnesiaStealer distributed via a fake GitHub download page using a ClickFix-style lure that tricks users into pasting a Base64 command into Terminal. The Rust payload harvests the Keychain, Apple Notes, Telegram sessions, Safari cookies, and 16 Chromium-family browsers, and captures the system password via a native prompt validated with dscl. A remotely fetched stream_module gives operators hidden, interactive browser control via the Chrome DevTools Protocol, streaming a live session at roughly 3fps. It persists via a root LaunchDaemon impersonating Apple's crash reporter and leverages the TCC bypass CVE-2020-9771 against macOS Catalina.

The Hacker NewsAug 15, 00:00 UTC · Aug 15, 2026Malware in the wildCVE-2020-9771

Novel macOS Infostealer AmnesiaStealer Spread via ClickFix

Novel macOS infostealer AmnesiaStealer spreads via ClickFix social engineering and lets attackers remotely control victims' browsers to steal cookie data.

Infosecurity Magazine reports on AmnesiaStealer, a novel macOS infostealer distributed through the ClickFix social engineering technique. The malware includes capabilities that let attackers take remote control of the victim's browser in order to steal cookie data. The novel remote-browser-control function distinguishes it from commodity macOS infostealers.

Infosecurity MagazineAug 14, 10:45 UTC · Aug 14, 2026Malware in the wild

AmnesiaStealer Gives Attackers Live Control of Victims’ macOS Browsers

Jamf Threat Labs analyzed AmnesiaStealer, a Rust-based macOS infostealer spread via fake GitHub pages that also grants live hidden browser control.

AmnesiaStealer is a three-stage Rust infostealer distributed through counterfeit GitHub download pages using the ClickFix technique, a lure shared with Atomic Stealer and MacSync campaigns. It harvests the keychain, 16 Chromium browsers, Apple Notes, Telegram and documents, reusing a password captured via a fake installer dialog. A third-stage stream module clones the victim's browser profile headlessly and lets operators drive the session via Chrome DevTools Protocol, while persistence uses a LaunchDaemon impersonating Apple's com.apple.ReportCrash.agent. On macOS 26 it may replace Chrome's Safe Storage key, a useful detection signal.

Security AffairsAug 14, 08:45 UTC · Aug 14, 2026Malware in the wild

Related CVEsby mentions

CVE-2020-97717.1<1%
This issue was addressed with a new entitlement.
This issue was addressed with a new entitlement. This issue is fixed in macOS Catalina 10.15.4. A user may gain access to protected parts of the file system.
· apple mac os x—

Appears with

vendor Jamf Threat Labs 2 product Telegram 2 malware Atomic Stealer 1 malware ClickLock Stealer 1 malware Kimwolf 1 malware MacSync 1 ai model Kimi K3 1 organization GitHub 1 organization Infosecurity Magazine 1 product Chrome 1 product Chromium 1 product Google Chrome 1 product macOS 1 product Microsoft Edge 1 product Safari 1 threat actor ExfilSquad 1

Entities are extracted by the model from each article. Watching an entity keeps it in this browser only (no account); the watchlist page and dashboard alerts use it.