Meikehuayi
Overview
Executive Summary
Meikehuayi is an aggressive Potentially Unwanted Program (PUP) and Adware application, frequently originating from Chinese software development networks. It masquerades as a legitimate system utility, media player, or browser enhancement, but its primary function is to forcefully inject advertisements, hijack browser settings, and heavily monetize the infected endpoint through affiliate traffic generation.Infection Vector and Technical Capabilities
Meikehuayi relies almost entirely on deceptive software bundling. Users typically encounter it when downloading "free" software, game mods, or cracked applications from unofficial, localized web portals. The adware is installed silently in the background during the primary software's setup process. Once installed, the software employs highly aggressive tactics:- Aggressive Browser Hijacking: The software installs persistent extensions and Browser Helper Objects (BHOs) across all installed web browsers. It forcefully modifies the default homepage, search engine, and new tab page to route traffic through localized shopping portals or affiliate search engines.
- System Watchdogs and Rootkit Tactics: Meikehuayi is notorious for its difficult uninstallation process. It frequently installs background "watchdog" services that actively monitor the registry and browser settings. If a user attempts to change their homepage back to Google, the watchdog service instantly reverts the change back to the malicious portal.
- Ad Injection and Overlay: It injects its own JavaScript into legitimate websites, overlaying pages with intrusive pop-up ads, sliding banners, and embedded video advertisements, significantly degrading system performance.
Threat Assessment
While Meikehuayi is generally not classified as destructive malware (like ransomware), it poses a severe threat to system stability, user productivity, and privacy. The aggressive persistence mechanisms cause significant IT overhead, and the constant ad injection consumes massive CPU and RAM resources.Incident Response and Remediation
- Safe Mode and Process Termination: Due to the aggressive watchdog services, it is often necessary to boot the infected machine into Windows "Safe Mode" to prevent the adware's defense mechanisms from launching before attempting uninstallation.
- Targeted Anti-Malware Scan: Standard antivirus often ignores PUPs. Utilize a reputable enterprise anti-malware solution (specifically tuned for Adware removal) to scan for and remove the deeply embedded registry keys and scheduled tasks.
- Browser Factory Reset: Following the removal of the underlying files, a full factory reset of all installed web browsers is absolutely required to purge the malicious extensions and hijacked settings.
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: T1185 T1176 T1546.015
Tactical Mitigations
Based on the techniques used by this family, consider the following defensive strategies:
- T1185: Enforce strong MFA and use browser isolation or hardened browsers for sensitive financial or administrative portals to defeat session hijacking.
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_MEIKEHUAYI {
meta:
description = "Detects Meikehuayi (ransomware)"
author = "SystemHelpdesk Boilerplate Generator"
date = "2026-07-06"
strings:
$s1 = "meikehuayi" ascii wide nocase
$s2 = "adware.meikehuayi" ascii wide nocase
$s3 = "pup.meike" ascii wide nocase
$s4 = "win32/adware.hijacker" ascii wide nocase
condition:
uint16(0) == 0x5a4d and any of them
}Sigma Rule
title: Suspicious Meikehuayi Activity
id: f3a23187ba1490dd55e6e3a44571b3cb
status: experimental
description: Detects generic indicators of the meikehuayi malware family.
logsource:
category: process_creation
product: windows
detection:
selection:
Image|endswith:
- '\cmd.exe'
- '\powershell.exe'
CommandLine|contains:
- "*meikehuayi*"
- "*adware.meikehuayi*"
- "*pup.meike*"
- "*win32/adware.hijacker*"
condition: selection
level: mediumReferences & External Analysis
- Search "meikehuayi" on VirusTotal (External Analysis)
Frequently Asked Questions
How do I remove the Meikehuayi Ransomware from Windows?
Manual removal of Meikehuayi 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 Meikehuayi a virus or a Ransomware?
Meikehuayi is classified as a Ransomware. Unlike traditional viruses that infect files, modern malware like Meikehuayi typically operates as a standalone payload designed to compromise systems, steal data, or deploy secondary stage implants.
What are the main symptoms of a Meikehuayi infection?
Symptoms of Meikehuayi 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: ransomware)
Explore other malware families in the same category:
Protect Your Network Against Ransomwares
Want to prevent Meikehuayi and similar threats from compromising your organization? Read our comprehensive defensive guide: Ransomware Protection Guide.
Machine-readable
Get this profile as JSON: https://jordan123234-malware-families-explorer.static.hf.space/api/meikehuayi.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.