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DripDropper malware activity on cloud Linux systems

Malware Activity
First reported
Last updated
Happening score
H score 47
1 unique sources, 1 articles

Summary

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The DripDropper malware was deployed on cloud Linux systems after attackers abused Apache ActiveMQ CVE-2023-46604, creating a persistent foothold that could evade detection. The malware used covert C2 channels, including Dropbox, Sliver, and Cloudflare Tunnels, to maintain long-term access. It also altered sshd and cron-based persistence mechanisms such as 0anacron under /etc/cron.hourly. The activity shows a post-exploitation toolset designed for durable remote control rather than a one-time payload.

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Timeline

  1. 19.08.2025 20:37 1 articles · 9mo ago

    DripDropper activity on cloud Linux systems

    Initial Disclosure

    Researchers observed threat actors exploiting CVE-2023-46604 in Apache ActiveMQ to gain persistent access to cloud Linux systems, modify sshd to enable root login, deploy the password-protected DripDropper ELF downloader, and use Dropbox, Sliver, and Cloudflare Tunnels for covert command and control. The activity also included cron-based persistence through 0anacron under /etc/cron.hourly, /etc/cron.daily, /etc/cron.weekly, and /etc/cron.monthly, along with downloading Apache Maven patches for CVE-2023-46604 after access was established to block follow-on exploitation.

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