MalwareUsed by 1 actor

EvilOSX

EvilOSX is a macOS post-exploitation malware/tool. The provided content identifies it as one of several popular macOS post-exploitation tools, alongside MacPEAS, MacShellSwift, and chainbreaker, and states that such tools can be used by operators to identify possible exploits and privilege-escalation paths by assessing stored credentials, user permissions, kernel version information, and distribution version information. The content also associates EvilOSX with APT31 (also known as BRONZE VINEWOOD, Zirconium, and Judgment Panda), describing it as one of multiple malware families used by that group. In the cited reporting, APT31 is accused of deploying EvilOSX via fake Adobe Flash update pages. High-confidence context from the content therefore links EvilOSX to macOS post-exploitation activity and to APT31 operations using fake Flash update lures. No malware-specific indicators of compromise beyond the name and delivery theme are provided in the content.

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THREAT ACTORS

Groups observed using it

1 distinct threat actor attributed by public researchers. Open in Mallory to see the full evidence chain and overlapping campaigns.

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ZIRCONIUM

Tooling-wise, APT31 initially used... EvilOSX... The defendants are also accused of creating fake Adobe Flash update pages to deploy the EvilOSX malware.

via harfanglab insidethelabharfanglab.io

MITRE ATT&CK

Techniques & procedures

3 distinct techniques documented for this family, organized by ATT&CK tactic.

Stealth

1 technique

T1036MasqueradingEvidence1

“The defendants are also accused of creating fake Adobe Flash update pages to deploy the EvilOSX malware (T1036)”

Discovery

2 techniques

T1069Permission Groups DiscoveryEvidence1

These tools allow operators find possible exploits or paths for privilege escalation based on stored credentials, user permissions, kernel version and distro version.

T1082System Information DiscoveryEvidence1

These tools allow operators find possible exploits or paths for privilege escalation based on stored credentials, user permissions, kernel version and distro version.

ACTIVITY FEED

Recent activity

2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

2 SOURCESView more in app

splunk researchNews

Feb 26, 2026

Analytics Story: MacOS Post-Exploitation | Splunk Security Content

A macOS post-exploitation tool and remote access framework referenced among popular tools used after initial compromise.

harfanglab insidethelabNews

May 14, 2025

Analysis of the APT31 indictment - HarfangLab

macOS malware used by APT31, including delivery via fake Adobe Flash update pages.

What this page doesn’t show

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IOC matching

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Threat actor attribution1

Named campaigns wielding this family, with evidence pinned to each claim.

Exploited vulnerabilities

CVEs this family uses for access and lateral movement.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

MITRE ATT&CK mapping3

Every documented technique, ranked by evidence weight.

Researcher chatter

Reddit, Mastodon, and CTI community discussion around this family.

EvilOSX