Living off the Land

Kaspersky's 2025 compromise assessment report reveals that organizations consistently fail to detect long-dwelling threats, with 30.8% of incidents persisting over 3 months and 52% of high-severity compromises going undetected for 90+ days. Key findings include widespread abuse of LoLBins and remote management tools in every incident-bearing engagement, 40% of web shells surviving in backups to be restored post-remediation, and a strong correlation between in-house forensics/reverse-engineering capability and reduced incident severity. Multiple case studies document dormant crypto-mining on domain controllers (4 years), in-memory LionTail implants on critical servers, PurpleFox rootkit infections evading EDR with disabled memory scanning, and ClipBanker persistence via registry Run keys with Defender exclusions.

2026-05-217 minHuntresshigh

The Ransomware-as-a-Service (RaaS) ecosystem relies heavily on affiliates who dictate the actual intrusion tradecraft, meaning a single ransomware brand can be associated with vastly different attack chains. Affiliates frequently abuse legitimate Remote Monitoring and Management (RMM) tools, exposed RDP, and vulnerable edge appliances for initial access, followed by the use of LOLBins and open-source utilities for persistence and data exfiltration.

Developer Supply Chains Under Siege as Edge Device Exploits Surge The dominant narrative this week is the coordinated weaponization of the software supply chain, as threat actors like TeamPCP and Mini Shai-Hulud aggressively target developer tools to steal cloud credentials. Because these attackers compromise trusted build systems like GitHub Actions, a single malicious package—such as the compromised TanStack libraries—can cascade into massive downstream breaches, allowing criminals to hold development environments hostage and even deploy destructive dead-man switches if their access is cut off. In parallel, attackers are bypassing traditional network defenses by exploiting internet-facing edge devices and logging in with stolen credentials. Threat clusters are actively exploiting critical flaws in Cisco Catalyst SD-WAN and Microsoft Exchange, while ransomware groups like The Gentlemen and state-sponsored actors like Secret Blizzard use these footholds to live off the land, hijacking legitimate IT tools to stay hidden for months. These trends together suggest that perimeter-focused defenses and basic patching are no longer sufficient. Organizations must immediately isolate their CI/CD pipelines from cloud credentials, enforce phishing-resistant multi-factor authentication on all internet-facing systems, and assume that trusted vendor tools may already be compromised.

2026-05-136 minCisco Taloshigh

State-sponsored threat actors operate with a fundamentally different methodology than financially motivated criminals, prioritizing long-term stealth over immediate disruption. By leveraging valid credentials and living-off-the-land (LOTL) techniques such as PowerShell and WMI, these adversaries bypass traditional signature-based detections. Defending against and responding to these threats requires organizations to shift toward continuous behavioral baselines, enhanced telemetry (e.g., Event IDs 4688, 4104, Sysmon), and strategic incident response plans that account for complex containment decisions and supply chain risks.

2026-05-136 minHuntresshigh

A threat actor utilized compromised VPN credentials to access a partner network, pivoting via a customized Impacket smbexec.py to enable RDP and establish an interactive session. The attacker then installed the open-source monitoring tool Komari directly from GitHub, leveraging its native WebSocket capabilities as a persistent, SYSTEM-level command-and-control (C2) backdoor disguised as the Windows Update Service.

2026-05-136 minCisco Taloshigh

The article details how threat actors can leverage native macOS binaries and protocols (Living-off-the-Land) to execute code, move laterally, and transfer tools while evading traditional security telemetry. By abusing Remote Application Scripting (RAS), Spotlight metadata, and built-in networking utilities, attackers can orchestrate fleet-wide compromises that bypass standard SSH-centric monitoring.

2026-05-135 minHuntresshigh

A Linux endpoint compromised by multiple threat actors deploying cryptominers was further complicated when the user utilized OpenAI's Codex to troubleshoot system issues. The AI agent generated commands that structurally resembled malicious activity, triggering EDR alerts and creating significant noise that hindered SOC triage and incident response.

2026-05-134 minCisco Taloshigh

Ransomware tactics in 2025 have shifted heavily toward 'Living off the Land' (LotL) techniques, with threat actors leveraging valid accounts and built-in administrative tools like RDP, PowerShell, and PsExec to evade detection. Qilin has emerged as the most prolific ransomware group, utilizing double-extortion tactics, while manufacturing remains the most targeted industry.

2026-05-138 minMandiantcritical

In 2025, ransomware operators increasingly relied on vulnerability exploitation for initial access and heavily targeted virtualization infrastructure like ESXi. While overall ransomware profitability appears to be declining, threat actors have adapted by increasing data theft extortion, targeting smaller organizations, and utilizing cross-platform ransomware families like REDBIKE, AGENDA, and INC.

2026-05-134 minSophoshigh

Iranian-linked threat actors consistently utilize a core set of cost-effective initial access techniques, including social engineering, rapid exploitation of known vulnerabilities, and credential abuse. These groups frequently leverage legitimate RMM tools and trusted cloud services to establish persistence and evade detection, highlighting the need for robust identity management, prompt patching, and perimeter security.