Dovs

Overview

Adware:Win32/Dovs is an intrusive adware variant and deceptive software (Scareware) framework that targets web browsers to forcibly redirect traffic, inject advertisements, and display alarming, fake system warnings to monetize user interactions.

What is Dovs?
To the average user, Dovs is highly visible and deeply frustrating. The browser homepage is forcibly changed, and standard websites are flooded with injected banner ads. More maliciously, Dovs frequently redirects users to domains displaying fake 'Virus Detected' or 'System Error' warnings (scareware) to trick them into paying for useless tech support or downloading further malware. For security analysts, Dovs leverages deceptive installation tactics and aggressive persistence mechanisms.

Infection Vectors & Threat Hunting
Dovs is almost exclusively distributed via deceptive software bundlers or fake 'browser update' alerts. Upon execution, the adware heavily modifies browser configurations. It installs malicious extensions and frequently leverages Windows Group Policy (GPO) settings to 'lock' the rogue extensions in place, preventing the user from disabling them via the browser's native UI. It establishes persistence via Registry Run keys. Dovs constantly communicates with its C2 infrastructure to download updated lists of ads to inject and scareware domains to redirect toward.

Forensic Analysis & Impact
The impact is a degraded user experience, potential financial loss (via scareware scams), and a total loss of browsing privacy. Incident responders will observe anomalous HTTP/HTTPS traffic to known ad-tracking networks. EDR logs will show the initial installer modifying browser preference files (e.g., Chrome's `Preferences` JSON file) and establishing unauthorized Group Policies (e.g., under `HKLM\SOFTWARE\Policies\Google\Chrome\ExtensionInstallForcelist`).

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:

• T1105: Implement network intrusion detection systems (NIDS) and host-based firewalls to block unauthorized inbound or outbound file transfers.

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

Sigma Rule

title: Suspicious Dovs Activity
id: 041cdf86945be45c80b5b8871304329e
status: experimental
description: Detects generic indicators of the dovs malware family.
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
        CommandLine|contains:
            - "*dovs*"
    condition: selection
level: medium

Containment & Response Steps

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

1. Quarantine the endpoint to halt the active exfiltration of browsing telemetry and the downloading of further adware modules.
2. Audit Windows Group Policies and the Registry to remove any forced extension installation policies (ExtensionInstallForcelist) created by the adware.
3. Deploy an enterprise adware removal tool (e.g., AdwCleaner) to locate and strip the deeply embedded registry hooks and watchdog services.
4. Force a complete reset of all installed web browsers to factory defaults to eradicate the rogue extensions and restore the homepage.

What to Avoid

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

1. Do not rely solely on the browser's 'remove extension' button; Dovs frequently uses GPOs and watchdog services to immediately reinstall itself.
2. Avoid ignoring the infection; scareware campaigns can trick employees into providing corporate credit card details or remote access to fake 'support' agents.

References & External Analysis

• Search "dovs" on VirusTotal (External Analysis)

Frequently Asked Questions

Related Families (Category: advanced_threat)

Explore other malware families in the same category:

• Visicom
• Sciagnij
• Hckpk
• Flymux
• Logicielsespions

Machine-readable

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