Full Report
Malware is evolving to evade sandboxes by pretending to be a real human behind the keyboard. The Picus Red Report 2026 shows 80% of top attacker techniques now focus on evasion and persistence, including geometry-based cursor tests and CPU timing checks. [...]
Analysis Summary
# Tool/Technique: Geometry-Based Human Verification & Advanced Sandbox Evasion
## Overview
This suite of techniques represents a strategic shift toward "Digital Parasite" tactics, where malware prioritizes evasion and persistence over immediate disruption. The primary purpose is to differentiate between an automated sandbox analysis environment and a legitimate human-operated workstation using mathematical validation and hardware profiling.
## Technical Details
- **Type**: Technique (Virtualization/Sandbox Evasion) / Malware Families (LummaC2, Blitz)
- **Platform**: Windows (primarily), Cross-platform potential
- **Capabilities**: Human interaction verification via trigonometry, CPU timing/hypervisor drag analysis, and hardware environment profiling.
- **First Seen**: Reported in Picus Red Report 2026 (Analyses dating June – November 2025).
## MITRE ATT&CK Mapping
- **TA0005 - Defense Evasion**
- **T1497 - Virtualization/Sandbox Evasion**
- **T1497.001 - System Checks**: Identifying VM-specific artifacts, drivers, and resource constraints.
- **T1497.002 - User Activity Based Checks**: Detecting human presence through cursor movement and geometry.
- **T1497.003 - Time Based Evasion**: Measuring CPU execution speed and stalls.
## Functionality
### Core Capabilities
- **Environment Profiling**: Searches for VM-specific artifacts like disk names ("VBOX", "VMWare"), hypervisor MAC addresses, and specialized drivers (e.g., ANY.RUN's `\\?\A3E64E55_fl`).
- **Resource Constraints**: Aborts execution if the system lacks human essentials, such as audio/video devices, or has suspicious hardware limits (e.g., fewer than 4 CPU cores).
- **Resolution Verification**: Checks for common default sandbox screen resolutions (1024x768, 800x600, 640x480).
### Advanced Features
- **Trigonometric Cursor Validation (LummaC2 v4.0)**: Uses Euclidean geometry to analyze cursor movement. Since human movement is rarely perfectly linear or mechanically uniform, the malware calculates the angles and distances of mouse travel to ensure a real person is navigating the OS.
- **Hypervisor Drag Detection**: Measures the minute timing differences ("drag") in CPU processing caused by the virtualization layer.
- **"Play Dead" Logic**: If any check fails, the payload remains dormant or "aborts," preventing security researchers from capturing the actual malicious behavior during automated detonation.
## Indicators of Compromise
- **File Hashes**: *Not specifically provided in the summary article.*
- **File Names**: Often associated with Blitz or LummaC2 variants.
- **Registry Keys**: Look for keys associated with virtualization software (VBox, VMware, QEMU).
- **Network Indicators**:
- C2 Domains: `lummac2-panel[.]example` (Example/Defanged)
- Blitz C2: `blitz-infra[.]net` (Example/Defanged)
- **Behavioral Indicators**:
- Immediate process termination after calling `GetCursorPos`.
- Excessive querying of hardware/CPU specifications upon initial execution.
- Absence of network activity for extended periods unless specific mouse movement thresholds are met.
## Associated Threat Actors
- Unknown/Various (The techniques are widely adopted across the "Digital Parasite" ecosystem).
- Specifically observed in **LummaC2** and **Blitz** malware families.
## Detection Methods
- **Behavioral Detection**: Monitor for "Environment Enumeration" patterns where a process queries screen resolution, CPU count, and mouse position in rapid succession.
- **Adversarial Exposure Validation (AEV)**: Using tools to simulate these specific stealth techniques to see if current security stacks detect the "silence" of evasive malware.
- **Heuristics**: Flagging binaries that import math/trigonometry libraries alongside networking and system enumeration functions.
## Mitigation Strategies
- **Hardening recommendations**: Configure analysis sandboxes to mimic high-end workstations (4+ cores, high-definition resolution, enabled audio/video drivers).
- **Dynamic Analysis Bypass**: Employ "human-mimicking" mouse movement scripts within sandboxes that use non-linear, randomized paths.
- **System Masking**: Randomize or hide VM-specific identifiers (MAC addresses, BIOS strings, and registry keys).
## Related Tools/Techniques
- **T1012 - Query Registry** (often used in conjunction with T1497.001).
- **Anti-Debugging**: Techniques meant to detect if a debugger is attached (e.g., `IsDebuggerPresent`).
- **Phishing**: Common delivery mechanism for LummaC2.