Easyspeedcheck

Overview

Executive Summary

Distribution and Technical Behavior

• Fake Scans and Scareware: The software frequently runs unsolicited "speed tests" or system scans that inevitably "discover" dozens of critical errors or network bottlenecks. It then aggressively prompts the user to purchase a premium license to fix these fabricated problems.
• Browser Hijacking: The PUP forcefully alters the browser's default search engine, homepage, and new tab settings. It redirects all search traffic through a specific portal controlled by the adware operators, allowing them to intercept queries and generate pay-per-click revenue.
• System Alteration: To ensure it remains active, EasySpeedCheck creates persistent Scheduled Tasks and modifies the Windows Registry to automatically launch its fake scanning and ad-serving components upon system boot.

Risk Assessment

Mitigation and Removal Strategies

• Endpoint Scanning: Utilize a reputable enterprise-grade anti-malware solution to perform a deep system scan, targeting the EasySpeedCheck executables, hidden scheduled tasks, and persistent registry keys.
• Browser Remediation: Manually inspect and remove any unknown or unauthorized extensions from all installed web browsers. Perform a complete factory reset of the browsers to clear the hijacked proxy and search settings.
• Application Control: Enforce strict application whitelisting policies to prevent standard users from executing unapproved software installers that are the primary vector for this adware.

Known aliases

Threat reports may refer to this family under multiple names:

• Adware.EasySpeedCheck
• PUP.EasySpeedCheck
• BrowserModifier:Win32/EasySpeedCheck

MITRE ATT&CK Techniques

This family has been observed using the following ATT&CK techniques: T1566.002 T1176 T1112

Tactical Mitigations

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

• T1566.002: Inspect email links for known malicious domains and use link-rewriting services for time-of-click analysis.

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_EASYSPEEDCHECK {
    meta:
        description = "Detects Easyspeedcheck (advanced_threat)"
        author = "SystemHelpdesk Boilerplate Generator"
        date = "2026-07-06"
    strings:
        $s1 = "easyspeedcheck" ascii wide nocase
        $s2 = "adware.easyspeedcheck" ascii wide nocase
        $s3 = "pup.easyspeedcheck" ascii wide nocase
        $s4 = "browsermodifier:win32/easyspeedcheck" ascii wide nocase
    condition:
        uint16(0) == 0x5a4d and any of them
}

Sigma Rule

title: Suspicious Easyspeedcheck Activity
id: 640844b16b1ef51cc4d2cea0016389ff
status: experimental
description: Detects generic indicators of the easyspeedcheck malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*easyspeedcheck*"
            - "*adware.easyspeedcheck*"
            - "*pup.easyspeedcheck*"
            - "*browsermodifier:win32/easyspeedcheck*"
    condition: selection
level: medium

References & External Analysis

• Search "easyspeedcheck" on VirusTotal (External Analysis)

Frequently Asked Questions

Related Families (Category: advanced_threat)

Explore other malware families in the same category:

• Perion
• Lyposit
• Mine
• Progressive
• Openinstall

Machine-readable

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