Equationdrug

Overview

Trojan:Win32/EquationDrug is a highly complex, extremely sophisticated cyber-espionage platform attributed to the 'Equation Group' (widely believed by the intelligence community to be the NSA's Tailored Access Operations (TAO)). Discovered by Kaspersky in 2015, EquationDrug acts as a central plugin framework for delivering a vast array of highly classified exploits and data theft modules.

Understanding EquationDrug
To a standard user, EquationDrug is entirely invisible. For nation-state threat hunters, EquationDrug is a masterpiece of software engineering. It is not a simple trojan; it is a sprawling, modular operating system that runs secretly *within* Windows. It is designed for surgical precision against high-value targets (telecoms, military, nanotechnology) and possesses capabilities rarely seen outside of state-sponsored actors, including firmware reprogramming and cryptographically secured virtual file systems.

Execution, Rootkits, and Espionage Modules
EquationDrug is deployed via zero-day exploits or physical interdiction (supply chain attacks) (`T1195`). Upon execution, it deploys a deeply embedded kernel-mode rootkit (`T1014`) to hide its presence. It creates a hidden, encrypted Virtual File System (VFS) stored within the Windows registry (`T1112`) to store its stolen data and plugins securely. The framework dynamically loads modules for specific tasks: keystroke logging, intercepting network traffic (`T1056`), stealing cryptographic keys, and—most famously—reprogramming hard drive firmware to create persistence that survives full disk formatting (`T1542`).

Indicators of Compromise & Impact
The impact is total, undetectable compromise of a high-value network. EquationDrug is designed to evade standard EDR and AV. Detection requires advanced memory forensics and analysis of raw disk anomalies. Indicators include highly obfuscated, undocumented registry keys containing massive binary blobs (the VFS), and anomalous kernel driver loading behavior. Eradication of EquationDrug, due to its firmware capabilities, often requires the physical destruction of the infected hard drives.

MITRE ATT&CK Techniques

Observed techniques used by this family, mapped to the MITRE ATT&CK framework:

Tactical Mitigations

Based on the techniques used by this family, consider the following defensive strategies:

• T1056: Monitor for unauthorized keylogging, screen capturing, or web browser API hooking. Deploy EDR to detect API hooking.

Generated Detections (Boilerplate)

These YARA and Sigma rules are auto-generated based on the family name and aliases. They must be heavily tuned before deployment in a production environment.

YARA Rule

rule MALWARE_WIN_EQUATIONDRUG {
    meta:
        description = "Detects Equationdrug (trojan)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "equationdrug" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Equationdrug Activity
id: e275d3d30a3fea030f87379893c7f6d5
status: experimental
description: Detects generic indicators of the equationdrug malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*equationdrug*"
    condition: selection
level: medium

Containment & Response Steps

Ordered checklist for responders. Adapt to your environment and engage professional support for active incidents.

1. Due to the extreme sophistication of the threat actor (APT), immediately involve national CERTs or specialized incident response firms.
2. Do NOT attempt to clean the machine. Unplug the physical network cable to sever the C2 connection, but leave the machine powered on.
3. Capture a full physical memory image (RAM dump) for forensic analysis of the kernel rootkit and the decrypted Virtual File System.
4. Because EquationDrug is known to re-flash hard drive firmware, standard OS wiping is insufficient. The physical hard drive must be securely destroyed.

What to Avoid

Common mistakes during response to this family that can destroy evidence, spread the infection, or worsen recovery.

1. Do not alert the threat actor by running aggressive AV scans; they may trigger self-destruct mechanisms to destroy forensic evidence.
2. Avoid assuming a reformat fixes the issue; EquationGroup tools survive OS reinstalls via firmware modifications.

References & External Analysis

• Search "equationdrug" on VirusTotal (External Analysis)

Frequently Asked Questions

Related Families (Category: trojan)

Explore other malware families in the same category:

• Genericrxcg
• Genericrxbg
• Gamania
• Popad
• Scrop

Machine-readable

Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/equationdrug.json

Ecosystem & Interactive Environments

This profile is part of the Malware Families Catalog, a public dataset of 2,899 malware families. The catalog is also published across our ecosystem: Hugging Face, Kaggle, Zenodo, Replit, StackBlitz, CodeSandbox, and CodePen.