HZ Rat backdoor for macOS attacks users of China’s DingTalk and WeChat


In June 2024, Kaspersky discovered a macOS version of the HZ Rat backdoor targeting users of the enterprise messenger DingTalk and the social network and messaging platform WeChat.

The samples Kaspersky found almost exactly replicate the functionality of the Windows version of the backdoor and differ only in the payload, which is received in the form of shell scripts from the attackers’ server. The researchers noticed that some versions of the backdoor use local IP addresses to connect to C2, which led us to believe the threat may be targeted. This also points to an intention to exploit the backdoor for lateral movement through the victim’s network.

Read more…
Source: Kaspersky


Sign up for our Newsletter


Related:

  • TAOTH Campaign Exploits End-of-Support Software to Target Traditional Chinese Users and Dissidents

    August 28, 2025

    In June, Terend Micro researchers identified and investigated an unusual security incident involving the installation of two malware families, C6DOOR and GTELAM, on a victim’s host. Trend Micro investigation determined that the malware was delivered through a legitimate input method editor (IME) software, Sogou Zhuyin. As brief explanation, an IME is a tool that interprets sequences ...

  • Widespread Data Theft Targets Salesforce Instances via Salesloft Drift

    August 28, 2025

    Based on new information identified by GTIG, the scope of this compromise is not exclusive to the Salesforce integration with Salesloft Drift and impacts other integrations. GTIG now advise all Salesloft Drift customers to treat any and all authentication tokens stored in or connected to the Drift platform as potentially compromised. On August 28, 2025, GTIG ...

  • Manitoba: Community that lost $472,000 to cyber attack failed to investigate

    August 28, 2025

    Manitoba’s auditor general says a rural municipality failed to properly investigate a cyber attack that resulted in the loss of hundreds of thousands of dollars. Tyson Shtykalo investigated the cybersecurity breach that led to the Municipality of Westlake-Gladstone, west of Winnipeg, losing more than $472,000 over the course of a few weeks in 2019 and 2020. Read ...

  • Cyber-attack on UK contractor affects islanders

    August 28, 2025

    A personal data breach at a Disclosure and Barring Service (DBS) contractor has affected some people in Guernsey, officials have said. The Office of the Data Protection Authority (ODPA) said that UK-based company Access Personal Checking Services Ltd (APCS) had been notified that a third-party contractor had been subject to a cyber incident. APCS said the ...

  • TransUnion says hackers stole 4.4 million customers’ personal information

    August 28, 2025

    Credit reporting giant TransUnion has disclosed a data breach affecting more than 4.4 million customers’ personal information. In a filing with Maine’s attorney general’s office on Thursday, TransUnion attributed the July 28 breach to unauthorized access of a third-party application storing customers’ personal data for its U.S. consumer support operations. TransUnion claimed “no credit information was ...

  • Jamaica: Cyber attack on Office of Registrar General contained, but services impacted

    August 27, 2025

    The Office of the Registrar-General (ORG), formerly the Registrar General’s Department (RGD), says it was affected by a cyber incident detected on Sunday and is working to determine its full scope. “Our initial assessment indicates that this incident was primarily designed to disrupt the availability of our systems,” the ORG said Wednesday. “As investigations are still ...