Netwiredrc

Overview

Backdoor:Win32/NetWiredRC is a potent, widely distributed Remote Access Trojan (RAT) known for its cross-platform capabilities, robust feature set, and frequent use in targeted cyber espionage, financial theft, and initial access brokerage.

Understanding NetWiredRC
To the victim, NetWiredRC operates silently, leaving no obvious visual footprint. For incident responders, NetWiredRC is a critical threat. Originally discovered around 2014, it is unique in its ability to support various OS environments (though Windows is the primary target). It provides the attacker with comprehensive control, including live desktop viewing, file management, remote shell access, and extensive credential theft capabilities.

Execution and Evasion Strategies
NetWiredRC is distributed through diverse vectors, primarily spearphishing campaigns (weaponized Office macros) and drive-by downloads. Upon execution, the RAT copies itself to a hidden folder in `%AppData%` and establishes persistence via the `HKCU\Software\Microsoft\Windows\CurrentVersion\Run` registry key. It is highly adept at stealing credentials, actively targeting browser login data, email clients (Outlook, Thunderbird), and cryptocurrency wallets. It communicates with its C2 server using a custom, encrypted TCP protocol (often heavily obfuscated or padded to evade deep packet inspection). It frequently injects its core payload into legitimate processes like `notepad.exe` to mask its presence.

Indicators of Compromise & Impact
The impact is total endpoint compromise and massive data exfiltration. EDR alerts targeting 'Suspicious Process Injection' or 'Anomalous Network Activity from non-browser processes' are common. Threat hunters should analyze network logs for sustained, encrypted TCP connections over non-standard ports. The presence of hidden directories within `%AppData%` containing randomly named executables alongside keylogger log files (.dat or .txt) is a strong IoC. Memory analysis is critical to extract the decrypted configuration file containing the C2 IP addresses.

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:

• T1056.001: Implement Endpoint Detection and Response (EDR) to monitor for suspicious API calls related to keystroke interception. Enforce Multi-Factor Authentication (MFA) to render stolen passwords useless.
• T1071.001: Implement web filtering and SSL/TLS inspection to detect malicious command and control (C2) traffic hiding in HTTP/HTTPS.

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

Sigma Rule

title: Suspicious Netwiredrc Activity
id: a1dfd62badc46a78dd217ccda2284777
status: experimental
description: Detects generic indicators of the netwiredrc malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*netwiredrc*"
    condition: selection
level: medium

Containment & Response Steps

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

1. Immediately sever the endpoint from the network to terminate the active NetWiredRC session and halt data exfiltration.
2. Do NOT reboot the machine immediately; capture a forensic memory image to extract the active configuration and C2 details.
3. Force a global password reset for all accounts accessed by the user, as NetWiredRC aggressively targets saved browser and email credentials.
4. Assume the machine is fully compromised; perform a clean operating system rebuild to ensure complete eradication.

What to Avoid

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

1. Do not leave the machine connected to the network during triage; the attacker has live access and can manually destroy evidence.
2. Avoid relying solely on file deletion; NetWiredRC often runs in memory and will recreate deleted files if the injected process is not killed.

References & External Analysis

• Search "netwiredrc" on VirusTotal (External Analysis)

Frequently Asked Questions

Related Families (Category: trojan)

Explore other malware families in the same category:

• Suixin
• Bundleloader
• Cambot
• Goobzo
• Confucius

Machine-readable

Get this profile as JSON: https://jordanricky1604-ship-it.github.io/malware-families-catalog/api/netwiredrc.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.