Products & ServicesProducts & Services
SolutionsSolutions
PricingPricing
CompanyCompany
ResourcesResources

CSEssentialMacStealer

Also known as:Essential macOS StealerMac.c-fork-shape stealer with Essential banner

What is the CSEssentialMacStealer infostealer, and what data does it steal?

CSEssentialMacStealer (also known as Essential macOS Stealer and Mac.c-fork-shape stealer with Essential banner) is a CyStack research label for information-stealer traces. CSEssentialMacStealer targets macOS login credentials (captured directly in the ``Username:`` / ``Password:`` preamble pair), Host hardware and OS fingerprint (Mac model, chip, RAM, display, Hardware UUID, Provisioning UDID, system firmware) and Account identity (login name, display name, computer name). As of 11/10/2026, CyStack's research records 1 distribution channel, with unknown attribution confidence.

Note: This data is provided for reference and cybersecurity research only.
CyStack recommends that users do not use this information for unlawful purposes

Description

Original English

CSEssentialMacStealer is a CyStack-coined identifier for a macOS stealer that self-identifies with the first-line banner Essential macOS Stealer. The file is a UserInformation.txt with a compact preamble (Build: per-build identifier plus captured Username: / Password: login credentials plus IP Address:) followed by three system_profiler section blocks: Software:, Hardware:, and Graphics/Displays:. Each block wraps verbatim output from the corresponding system_profiler data type with the nested 4-6 space indentation preserved.

The body shape is structurally identical to Phexia macOS Stealer per public writeups, and a published interview with the Phexia developer confirms that Phexia is one of multiple forks of the shared Mac.c stealer module. Essential may be another Mac.c fork or a rebrand of one of the documented siblings, but public reporting does not document this specific banner. Family attribution is provisional pending a published threat-intel writeup for the Essential macOS Stealer banner.

Operator panels & distribution channels

1 distinct distribution channel recorded for this malware

Data provided by

Accelerate investigation with professional monitoring solutions

Infostealer data represents only a fraction of modern data theft threats. With the Threat Intelligence component in the CyStack VulnScan solution suite, organizations can investigate each threat and credential exposure in depth, mapping C2, IOCs, and other actionable threat intelligence.

Explore Threat Intelligence

Panel name	Distribution channel	Confidence
—	Telegram	Unknown

Essential macOS Stealer Malware Analysis: Targets & TTPs