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Atomic macOS (AMOS) Stealer Activity

ID: 728fc20d-3e90-5202-8954-7863091e259a

STIX ID: report--728fc20d-3e90-5202-8954-7863091e259a

Feed Name: Palo Alto Networks Unit 42

Threat Score
75/100

Date Published: 2026-09-16

Date Updated: 2026-10-06

Author: Bradley Duncan

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This report analyzes an AMOS macOS infostealer infection (lab reproduction, Aug 5, 2026), describing a copy/paste Zsh-based infection vector from a malicious site, retrieved Mach-O binaries and plist persistence, permission prompts and credential escalation, data collection (browsers, wallets, credentials), post-infection POST traffic to C2 servers, and a set of IOCs (file hashes, URLs, domains, IPs) to aid detection and mitigation.

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