Last updated: August 19, 2026 at 1:47 AM UTC
All 741 Vulnerability 286 Breach 129 Threat 319 Defense 7
Tag: edr-evasion (2 articles)Clear

Akira ransomware reboots Windows into Safe Mode to switch off security tools

Huntress detailed an Akira ransomware intrusion that reached in through an exposed SonicWall VPN and then forced Windows into Safe Mode to disable defenses. Because Safe Mode starts only a minimal set of services, the endpoint detection tools and Microsoft Defender did not load, leaving the attacker free to run their encryptor. The twist is that Safe Mode also starves the system of virtual memory, and thirteen seconds after the reboot the encryptor ran out of memory and crashed, so files were not encrypted, though the attacker still stole data. The technique remains a useful evasion play worth detecting even when the payload fails.

Check
Alert on boot-configuration changes and Safe Mode boots, watch for security services stopping and tools added to the Safe Mode service list, and require multi-factor authentication on every VPN account.
Affected
Windows environments reachable through exposed or weakly protected VPNs; an attacker who gains access can reboot endpoints into Safe Mode to bypass endpoint detection and Defender before attempting encryption or theft.
Fix
Require multi-factor authentication on VPNs and alert on failed login bursts, monitor for msconfig and bcdedit changes and Safe Mode boot events, and run security tooling in Safe Mode where supported.

AI-built ransomware toolkit uses Cursor and Claude Opus agents to automate EDR evasion and Active Directory discovery, Sophos finds

Sophos has detailed a threat actor using an AI-assisted ransomware toolkit that automates Active Directory discovery and EDR evasion. Tool and payload development was aided by Cursor and Claude Opus agents across coding, analysis, and revision, with some agents tasked to scrape security-research posts for fresh bypass techniques; resulting malware was tested in VMs against Sophos, CrowdStrike, and Microsoft EDR. The framework includes Cobalt Strike profiles mimicking legitimate web traffic, a Telegram-bot C2, Python shellcode injectors preserving host-binary functionality, and a Cloudflare Worker front-end redirector. Despite the AI orchestration, the workflow is entirely human-driven. Operator logs and a ransomware-leak-site reference confirmed criminal, not red-team, use.

Check
Hunt endpoints for payloads under C:\Users\*\Documents\test, Telegram-bot C2 traffic, and Cobalt Strike beacons fronted by Cloudflare Workers. Apply Sophos IoCs across EDR-monitored hosts.
Affected
Organizations relying on EDR signatures alone. This toolkit was AI-tuned specifically to bypass Sophos, CrowdStrike, and Microsoft EDR, and routes C2 through Telegram and Cloudflare Workers to blend in.
Fix
Layer behavioral detection and AD-tiering on top of EDR. Block unauthorized Telegram API and anomalous Cloudflare Worker egress. Monitor for AD-discovery patterns and shellcode injection into signed binaries.