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Google Doc Sidebar Sends Mac and Windows Users Down Different Paths to Malware
Huntress analysts trace one X direct message into separate Mac and Windows malware chains delivering AMOS infostealer and NetSupport Manager RAT.
Huntress SOC analysts dissected a malware campaign distributed via an X direct message styled as a Google Docs sidebar. macOS users were routed to the AMOS infostealer, while Windows users received NetSupport Manager remote access malware. The write-up details how a single message branched into two distinct delivery paths per operating system.
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The Fractured Block Campaign: CARROTBAT Used to Deliver Malware Targeting Southeast Asia
Unit 42 uncovers the Fractured Block campaign using the CARROTBAT dropper to deliver SYSCON and OceanSalt malware in cryptocurrency-themed attacks across Southeast Asia.
Unit 42 identified 29 CARROTBAT dropper samples used in the Fractured Block campaign, delivering decoy documents on cryptocurrencies, exchanges, and Korean political topics. Early samples delivered the SYSCON RAT, which uses FTP for command and control, while later ones dropped the previously reported OceanSalt malware. CARROTBAT supports 11 decoy file formats and uses certutil to download and execute payloads. Initial discovery stemmed from a December 2017 spear phishing attack on a British government agency, with infrastructure overlap tying the campaign to KONNI activity.
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