Proxygate
Overview
Executive Summary
ProxyGate is an application typically classified as Riskware or a Potentially Unwanted Program (PUP) by enterprise security environments. It operates as a localized proxy server or VPN client, purportedly designed to allow users to bypass geo-restrictions or web filters. However, in a corporate setting, ProxyGate acts as an unauthorized proxy that actively subverts established security perimeters, data loss prevention (DLP) controls, and acceptable use policies.Infection Vector and Technical Capabilities
ProxyGate is rarely distributed via exploits; it is almost always intentionally downloaded by an insider threat (an employee attempting to bypass the corporate firewall) or bundled silently alongside "freeware" software downloaded from third-party aggregators. Upon installation, it fundamentally alters the endpoint's network routing:- Security Perimeter Evasion: The software establishes an encrypted tunnel to external, third-party proxy servers. This tunnels all web traffic (HTTP/HTTPS) out of the network, completely bypassing the corporate firewall, content filters, and Intrusion Detection Systems (IDS).
- Data Exfiltration Risk: Because the traffic is routed outside of corporate visibility, ProxyGate creates a massive blind spot. Employees can intentionally or accidentally upload sensitive intellectual property to external sites without triggering DLP alerts.
- Traffic Hijacking (In some variants): Some aggressive "freeware" proxy tools operate on a P2P model, essentially turning the infected corporate endpoint into an exit node for other external users, consuming corporate bandwidth and associating the company's IP address with unknown external traffic.
Threat Assessment
The primary threat of ProxyGate is not file destruction, but the total loss of network visibility and control. It facilitates data exfiltration, allows the introduction of malware by bypassing web filters, and creates significant compliance and legal liabilities for the organization.Incident Response and Remediation
- Application Whitelisting / Blocking: Use endpoint management tools to forcibly uninstall the ProxyGate application. More importantly, enforce strict Application Control (Whitelisting) to prevent users from executing unauthorized VPN or proxy executables in the future.
- DNS and Firewall Enforcement: Analyze the outbound DNS requests made by ProxyGate and block those domains at the perimeter firewall. Ensure that outbound traffic on non-standard ports is strictly regulated.
- HR and Policy Review: Because this software is often installed intentionally to bypass security controls, the incident should be reported to management or HR to enforce the organization's Acceptable Use Policy (AUP).
Known aliases
Threat reports may refer to this family under multiple names:
MITRE ATT&CK Techniques
This family has been observed using the following ATT&CK techniques: T1090.003 T1562.001
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_PROXYGATE {
meta:
description = "Detects Proxygate (advanced_threat)"
author = "SystemHelpdesk Boilerplate Generator"
date = "2026-07-06"
strings:
$s1 = "proxygate" ascii wide nocase
$s2 = "riskware.proxygate" ascii wide nocase
$s3 = "pup.proxytool" ascii wide nocase
$s4 = "tool.vpnbypass" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Sigma Rule
title: Suspicious Proxygate Activity
id: 03fb8dd17073aef1d71eb560d8d25a06
status: experimental
description: Detects generic indicators of the proxygate malware family.
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
CommandLine|contains:
- "*proxygate*"
- "*riskware.proxygate*"
- "*pup.proxytool*"
- "*tool.vpnbypass*"
condition: selection
level: mediumReferences & External Analysis
- Search "proxygate" on VirusTotal (External Analysis)
Frequently Asked Questions
How do I remove the Proxygate Advanced_Threat from Windows?
Manual removal of Proxygate is highly discouraged as it may leave persistence mechanisms intact. We recommend disconnecting the device from the internet and utilizing a professional incident response service or enterprise-grade EDR software to conduct a full forensic sweep.
Is Proxygate a virus or a Advanced_Threat?
Proxygate is classified as a Advanced_Threat. Unlike traditional viruses that infect files, modern malware like Proxygate typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Proxygate infection?
Symptoms of Proxygate can include unexpected system slowness, unauthorized outbound network traffic to unknown IP addresses, disabled security software, and suspicious background processes running from AppData or Temp directories.
Related Families (Category: advanced_threat)
Explore other malware families in the same category:
Protect Your Network Against Advanced_Threats
Want to prevent Proxygate and similar threats from compromising your organization? Read our comprehensive defensive guide: Suspect an Infection? What to do.
Machine-readable
Get this profile as JSON: https://jordanricky1604-ship-it.github.io/malware-families-catalog/api/proxygate.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.