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OSINT - OSX Malware is Catching Up, and it wants to Read Your HTTPS Traffic

Low
Published: Fri Apr 28 2017 (04/28/2017, 00:00:00 UTC)
Source: CIRCL
Vendor/Project: tlp
Product: white

Description

OSINT - OSX Malware is Catching Up, and it wants to Read Your HTTPS Traffic

AI-Powered Analysis

AILast updated: 07/02/2025, 16:43:34 UTC

Technical Analysis

This threat concerns macOS-targeted malware that aims to intercept and read HTTPS traffic on infected systems. The malware represents a growing trend where attackers are increasingly focusing on macOS platforms, which historically have been less targeted compared to Windows. The primary objective of this malware is to bypass the encryption protections provided by HTTPS, potentially by installing malicious root certificates, performing man-in-the-middle (MITM) attacks locally, or exploiting vulnerabilities in the system to capture decrypted traffic. By reading HTTPS traffic, the malware can extract sensitive information such as login credentials, personal data, and confidential communications. Although the published information dates back to 2017 and the severity is rated low, the threat highlights an important shift in attacker focus and techniques on macOS. The lack of known exploits in the wild and absence of detailed technical indicators limit the ability to assess specific infection vectors or payload capabilities. However, the malware’s intent to compromise encrypted communications is significant, as it undermines one of the core security assurances of modern internet usage. The threat level and analysis scores suggest moderate concern but not immediate critical risk. This malware likely requires some form of user interaction or social engineering to be installed, given typical macOS security models and the need to install root certificates or privileged components to intercept HTTPS traffic.

Potential Impact

For European organizations, the impact of this malware could be substantial if successful infections occur, especially in sectors handling sensitive data such as finance, healthcare, and government. Interception of HTTPS traffic compromises confidentiality and could lead to data breaches, intellectual property theft, and exposure of personal data protected under GDPR. The integrity of communications could also be undermined if attackers modify traffic. Although the malware is currently rated low severity and no widespread exploitation is reported, the potential for targeted attacks against high-value macOS users exists. Organizations with employees using macOS devices for remote work or accessing corporate resources could face increased risk. The malware’s ability to read encrypted traffic could facilitate further lateral movement or credential theft within networks. Given the increasing adoption of macOS in professional environments across Europe, the threat could grow if attackers improve their capabilities or distribution methods.

Mitigation Recommendations

Organizations should implement strict endpoint security controls on macOS devices, including the use of reputable antivirus and anti-malware solutions capable of detecting suspicious root certificate installations or network interception tools. Regularly auditing installed root certificates and network configurations can help detect unauthorized changes. Enforcing least privilege principles and restricting administrative rights on macOS systems reduces the risk of malware installation. Network-level protections such as DNS filtering, intrusion detection systems, and monitoring for unusual SSL/TLS interception behaviors can provide early warning. User awareness training focused on phishing and social engineering is critical to prevent initial infection vectors. Additionally, deploying endpoint detection and response (EDR) solutions that support macOS can improve detection and response capabilities. Organizations should ensure macOS systems are kept up to date with the latest security patches and consider implementing certificate pinning or other application-level protections to mitigate HTTPS interception risks.

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Technical Details

Threat Level
3
Analysis
2
Original Timestamp
1493647580

Threat ID: 682acdbdbbaf20d303f0ba3b

Added to database: 5/19/2025, 6:20:45 AM

Last enriched: 7/2/2025, 4:43:34 PM

Last updated: 8/14/2025, 1:09:33 AM

Views: 11

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