Threats Tagged 'project cav3rn'

A modular espionage framework targeting entities in Israel has evolved to incorporate sophisticated command-and-control capabilities. The framework employs DNS A-record responses to dynamically select between direct HTTPS connections and a Google Apps Script relay for each transaction, enabling operators to rotate communication channels and deployment identifiers. The communication module uses DNS infrastructure to validate and update Google Apps Script deployment IDs, while XOR encoding obfuscates command-and-control traffic. An inter-component broker coordinates framework DLL components, enabling runtime upgrades without system restarts. The infrastructure leveraged a previously expired Israeli domain, now repurposed with custom authoritative DNS servers, alongside legitimate Google services to blend malicious traffic with normal network activity.

MediumMalwareIsrael#dns-based c2#net.dll#communicationuxtheme.dll

Kaspersky identified a new .NET Native AOT communication module for Project CAV3RN, a sophisticated cyberespionage framework targeting Israel. This module replaces the previous HTTP/WebSocket component by exchanging commands through Outlook calendar events accessed via Microsoft Graph API. Commands and results are stored in a fixed time window (2050-05-13 22:00-23:00 UTC) using specific subject patterns to identify heartbeats, commands, and outputs. The module implements RSA and AES-GCM encryption for secure communications. If Microsoft Graph authentication fails, it retrieves replacement configuration settings through DNS AAAA record responses from actor-controlled nameservers. The infrastructure analysis and behavioral patterns suggest low-confidence attribution to OilRig (APT34), based on the use of Microsoft-hosted services for command and control and compromised regional infrastructure.

MediumMalwareIsrael#veaty#whisper#encryption