Emerging Threats
Malware2025

Atomic MacOS Stealer

2Rules
6References
1Folders
2025-11-22Latest
Summary

Atomic MacOS Stealer is tracked here as a malware family or toolset with 2 Sigma detections spanning 2025. Coverage centers on macos / file_event, macos / process_creation.

Related Detections
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2 rulesInspect a rule without leaving your results.
highexperimentalEmerging Threat

Atomic MacOS Stealer - FileGrabber Activity

Detects suspicious activity associated with Atomic MacOS Stealer (Amos) campaigns, including execution of FileGrabber and curl-based POST requests used for data exfiltration. The rule identifies either the execution of FileGrabber targeting /tmp or the use of curl to POST sensitive user data (including files such as /tmp/out.zip) to remote servers, which are key indicators of Amos infostealer activity.

macosprocess_creation
2025-11-22
highexperimentalEmerging Threat

Atomic MacOS Stealer - Persistence Indicators

Detects creation of persistence artifacts placed by Atomic MacOS Stealer in macOS systems. Recent Atomic MacOS Stealer variants have been observed dropping these to maintain persistent access after compromise.

macosfile_event
2025-11-22
References