Proofpoint is tracking a cluster of cybercriminal threat activity leveraging Cloudflare Tunnels to deliver malware.
Specifically, the activity abuses the TryCloudflare feature that allows an attacker to create a one-time tunnel without creating an account. Tunnels are a way to remotely access data and resources that are not on the local network, like using a virtual private network (VPN) or secure shell (SSH) protocol. First observed in February 2024, the cluster increased activity in May through July, with most campaigns leading to Xworm, a remote access trojan (RAT), in recent months.
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Source: Proofpoint
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