Tracked campaign: Gameograf / Ovkas wallpaper adware

Our analysis confirmed the behaviour described in the threat library entry. Read the analysis and indicators →

Also reported by raw.githubusercontent.com

Chrome Web Store Verified

Hatsune Miku China Dress Live Wallpaper

by [email protected] · 718 users · 5.0 rating
77c6fd50-556f-58bf-b62e-772528ff46f7 | v2.0.3
55/ 100
MEDIUM risk
Threat verdict
Do not install

Confirmed member of a tracked malicious supply-chain campaign.

Analysis record

Analysed
6 days ago
Version
v2.0.3
Artifact
SHA256 D98…0C2
Source
Findings (non-IoC)

Evidence ledger

Ranked by severity · findings with a source location link to the code viewer

48 detail rows

YARA Rule Matches

10 rules
SeverityRuleHitsFilesMetadata
LOWpostinstall persistence mechanism 1
js/background.js
-
LOWpostinstall file manipulation 14
js/sidePanel.jsjs/countdownTimer.jsjs/calendar.js +11 more
-
LOWpostinstall network communication 6
js/chatgpt.jsjs/background.jsjs/script.js +3 more
-
LOWpostinstall crypto operations 3
js/script.jsjs/jquery-3.7.1.min.js_metadata/verified_contents.json
-
LOWpostinstall obfuscation 4
js/background.jsjs/sidePanel.jsjs/jquery-3.7.1.min.js +1 more
-
LOWpostinstall system command 1
js/jquery-3.7.1.min.js
-
LOWpostinstall file download 5
js/weather.jsjs/background.jsjs/script.js +2 more
-
LOWSQLInjection 3
js/todo.jsjs/jquery-3.7.1.min.jsjs/script.js
-
LOWNoUseWeakRandom 2
js/jquery-3.7.1.min.jsjs/createStickyNote.js
-
LOWLocalStorageShouldNotBeUsed 3
js/todo.jsjs/script.jsjs/createStickyNote.js
-

Publisher Evidence

Limited evidence

[email protected]

Publisher identity, store signals, distribution reach, and warning signals used for context. Treat this as supporting evidence, not a clean bill of health.

Chrome does not expose the same publisher verification data as IDE stores, so this score is deliberately conservative.

51
Noisy-finding weight
x1.00
Publisher domain
gameograf.com
Observed
Store verification signal
Limited signal
Limited
Extension portfolio
1.6K
Portfolio

11 evidence rows available.

Finding Categories

6
Network
44
IoC Indicators

YARA Rules Matched

10 rules(42 hits)
postinstall persistence mechanism postinstall file manipulation postinstall network communication postinstall crypto operations postinstall obfuscation postinstall system command postinstall file download SQLInjection NoUseWeakRandom LocalStorageShouldNotBeUsed

Requested Permissions

4 permissions
search
Low
alarms
Low
storage
Low
https://api.gameograf.com/*
Low

AI Security Report

AI Security Review

Evidence context: threat category pup; evidence quality moderate.

Extension Overview

The extension "Hatsune Miku China Dress Live Wallpaper" by developer [email protected] presents multiple risk indicators warranting caution. The extension has 704 users and claims to provide live wallpaper functionality, a category frequently abused for adware distribution.

Suspicious Network Domains

The IoC findings reveal several concerning domains extracted from the extension code. The domains custom.click, trigger.click, and shortcut.click use the .click TLD, which is commonly associated with affiliate tracking and click monetization networks. Additionally, data.top and note.style.top use the .top TLD, which is frequently employed for data collection endpoints. These domains appear in the extracted IoC list alongside legitimate Chrome API references.

The network findings show fetch calls in js/popup.js:35 and js/script.js:17, confirming the extension makes external network requests. Without visibility into what data these requests transmit, the combination of fetch calls and suspicious TLD domains creates a data exfiltration risk profile.

False Positive Context

Several IoC findings are clearly false positives from the XIOC extractor: chrome.runtime.id is a Chrome API reference, not a domain. Property access chains like note.dataset.id and data.id are JavaScript object property chains misidentified as domains. These account for a significant portion of the 133 total IoC findings.

Anonymous Publisher

The developer is listed only as an email address ([email protected]) with no company name or verified identity. This anonymous publication combined with suspicious network destinations is a documented risk pattern for potentially unwanted programs.

Counterargument Assessment

A skeptic might argue that without malware signatures or obfuscation, this extension is benign. However, the absence of malware signatures does not preclude PUP behavior. The specific combination of anonymous publishing, click-tracking TLD domains, and live wallpaper category (a known adware vector) creates sufficient evidence for a risk classification. The extension's behavior pattern aligns with monetization through affiliate links or data collection rather than straightforward malware, but still represents user risk.

Key Reasons

  • Suspicious .click TLD domains (custom.click, trigger.click, shortcut.click) indicate click-tracking/affiliate network
  • Anonymous developer (email only, no company name)
  • Suspicious .top TLD domains (data.top, note.style.top) suggest data collection endpoints
  • Live wallpaper category is frequently abused for adware distribution
  • Network fetch calls in popup.js and script.js with unverified destinations

False Positive Considerations

  • chrome.runtime.id is a Chrome API reference, not a domain
  • Property access chains (note.dataset.id, data.id) misidentified as domains
  • Code-smell findings (19 total) are known noise sources
  • High IoC count inflated by XIOC extractor false positives

Reviewed 2026-05-03; recommended action: monitor; model confidence 75%.

About This Extension

Hatsune Miku China Dress Live Wallpaper features a dynamic HD live wallpaper designed around its visual theme, bringing the subject into every new tab with a continuously looping scene. Extension Features 🎞 Hatsune Miku China Dress Live Wallpaper Video – Dynamic HD looped live wallpaper. 🔗 Popular Shortcuts – Quick access to YouTube, Netflix, ChatGPT, Amazon, and more. 🞞 Custom Shortcuts – Add your favorite websites for instant access. 🔍 Search Bar – Works seamlessly with your default search engine. 🕒 Clock & Date – Minimalist, always-on time & date widget. 📝 Sticky Notes – Colorful, draggable notes on your new tab. 🔔 Notifications – Get alerts about new wallpapers & features. 📧 Google Apps – One-click access to Gmail, Maps, Drive, and more. 🤖 ChatGPT Widget – Ask questions and get instant AI-powered answers. ✅ To-Do List – Organize your daily tasks directly on your new tab. 📅 Calendar Tool – Keep track of important dates. 🧮 Calculator – Perform calculations without leaving Chrome. ⏳ Timer – Built-in countdown for productivity or breaks. 🛠 More Tools – Includes privacy settings, uninstall guide, and support. About Us Gameograf.com develops premium Chrome new tab themes designed for anime, gaming, cars, celebrities, sports, and more. Enjoy visually stunning and immersive browsing experiences with every extension. 🌐 Website: https://gameograf.com 📩 Contact: https://gameograf.com/contact-us/ 🔒 Privacy Policy: https://gameograf.com/privacy-policy/ 💬 Feedback: https://gameograf.com/feedback/ 📧 Email: [email protected] Affiliate Policy Notice This extension opens a new tab at https://gameograf.com. Some links on our website including Amazon links may contain affiliate tracking. If you purchase through these links, Gameograf.com may earn a small commission, helping us maintain and improve our free extensions.

Frequently Asked Questions