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

Labubu Rainbow Live Wallpaper

by [email protected] · 995 users · 4.5 rating
a0d4f18d-e4ec-5ba5-a61c-71f73f839afc | v1.2
50/ 100
MEDIUM risk
Threat verdict
Do not install

Confirmed member of a tracked malicious supply-chain campaign.

Analysis record

Analysed
9 months ago
Version
v1.2
Artifact
SHA256 295…F6B
Source
Findings (non-IoC)

Evidence ledger

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

38 detail rows

YARA Rule Matches

9 rules
SeverityRuleHitsFilesMetadata
HIGHpostinstall crypto operations

Cryptographic operations detected

2
_metadata/verified_contents.jsonjs/jquery-3.7.1.min.js
Risky Plugins Authors FP 30%
HIGHNoUseWeakRandom

When software generates predictable values in a context requiring unpredictability, it may be possible for an attacker to guess the next value that will be generated, and use this guess to impersonate another user or access sensitive information. As the Math.random() function relies on a weak pseudorandom number generator, this function should not be used for security-critical applications or for protecting sensitive data. In such context, a cryptographically strong pseudorandom number generator (CSPRNG) should be used instead. For more information checkout the CWE-338 (https://cwe.mitre.org/data/definitions/338.html) advisory.

2
js/jquery-3.7.1.min.jsjs/createStickyNote.js
FP 5%
HIGHpostinstall network communication

Network communication detected

5
_metadata/verified_contents.jsonimg/bg.mp4js/chatgpt.js +2 more
Risky Plugins Authors FP 30%
HIGHpostinstall file manipulation

File system manipulation detected

13
js/timer.jsjs/googletools.jsjs/calendar.js +10 more
Risky Plugins Authors FP 20%
HIGHpostinstall system command

System command execution detected

2
img/bg.mp4js/jquery-3.7.1.min.js
Risky Plugins Authors FP 10%
HIGHpostinstall file download

File download activity detected

3
js/script.jsjs/newsBar.jsjs/popup.js
Risky Plugins Authors FP 30%
HIGHpostinstall obfuscation

Code obfuscation techniques detected

1
js/jquery-3.7.1.min.js
Risky Plugins Authors FP 20%
HIGHLocalStorageShouldNotBeUsed

Session storage and local storage are HTML 5 features which allow developers to easily store megabytes of data client-side, as opposed to the 4Kb cookies can accommodate. While useful to speed applications up on the client side, it can be dangerous to store sensitive information this way because the data is not encrypted by default and any script on the page may access it. This rule raises an issue when the localStorage and sessionStorage API's are used. For more information checkout the OWSAP A3:2017 (https://owasp.org/www-project-top-ten/2017/A3_2017-Sensitive_Data_Exposure.html) advisory.

4
js/script.jsjs/createStickyNote.jsjs/todo.js +1 more
FP 5%
HIGHSQLInjection

SQL queries often need to use a hardcoded SQL string with a dynamic parameter coming from a user request. Formatting a string to add those parameters to the request is a bad practice as it can result in an SQL injection. The safe way to add parameters to a SQL query is to use SQL binding mechanisms. For more information checkout the CWE-564 (https://cwe.mitre.org/data/definitions/564.html) and OWASP A1:2017 (https://owasp.org/www-project-top-ten/2017/A1_2017-Injection.html) advisory.

3
js/script.jsjs/jquery-3.7.1.min.jsjs/todo.js
FP 10%

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

35
Malware Signatures
3
Network

YARA Rules Matched

9 rules(35 hits)
postinstall crypto operations NoUseWeakRandom postinstall network communication postinstall file manipulation postinstall system command postinstall file download postinstall obfuscation LocalStorageShouldNotBeUsed SQLInjection

Requested Permissions

2 permissions
search
Low
https://api.gameograf.com/*
Low

AI Security Report

AI Security Review

Evidence context: threat category none; evidence quality moderate.

This extension exhibits a classic false-positive pattern driven by the XIOC extractor's known garbage output. All 260 IoC findings are property access chains misidentified as domains: finish.call, this.name, l.style, this.now, e.top, e.elem.style, t.events, this.map, and similar patterns like this.options.step.call and l.opts.start.call. These are JavaScript property access patterns, not actual network destinations, and represent a well-documented noise source from the CVEQ IoC extraction pipeline.

Critically, the extension has zero malware signatures and zero obfuscation findings. The 35 code-smell findings are classified as low-severity noise per the triage guidelines—these rules fire on almost any non-trivial JavaScript and should not drive verdicts. The 3 network findings lack specific suspicious domains; without concrete evidence of malicious destinations, they cannot support a malicious verdict.

The extension's purpose aligns with its description: an animated live wallpaper featuring Labubu character art. There is no evidence of browser hijacking (no custom search engines, no new tab replacement), no credential theft indicators (no login domain targeting), no proxyware functionality, and no typosquatting (Labubu is a legitimate character from Pop Mart toys, not an impersonation of a known extension).

The strongest counterargument is the anonymous developer attribution ([email protected] instead of a verified publisher name) combined with zero user count, which could indicate a newly deployed malicious extension. However, anonymous publishers are common for legitimate indie extensions, and the absence of actual malware signatures, obfuscation, or suspicious network destinations outweighs this concern. The evidence would need concrete malicious indicators—such as malware signatures co-located with obfuscation, or specific suspicious domains in network findings—to warrant a confirmed_malicious verdict. Without those, the high finding count is entirely attributable to known false-positive patterns.

Key Reasons

  • All 260 IoC findings are XIOC extractor false positives from property access chains
  • Zero malware signatures detected
  • Zero obfuscation findings
  • Code-smell findings are known noise per triage guidelines

False Positive Considerations

  • XIOC property access chain extraction (finish.call, this.name, l.style, etc.)
  • Code-smell rules firing on standard JavaScript patterns

Reviewed 2026-04-29; recommended action: suppress false positive; model confidence 85%.

About This Extension

Brighten your browsing with the Labubu Rainbow Live Wallpaper. Each new tab bursts into color with a joyful HD video of Labubu surrounded by a glowing rainbow aura, bringing positivity, fun, and a playful atmosphere to your screen. Perfect for Labubu fans and anyone who loves cheerful vibes while exploring the web. Extension Features 🌈 Labubu Rainbow Video – Dynamic HD looped live wallpaper featuring Labubu with rainbow effects. 📰 News Feed Bar – Stay updated with trending anime, gaming, K-pop, and entertainment news. 🔗 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 creates exclusive Chrome new tab extensions to make browsing more personalized and fun. Explore our vast library of anime & manga, K-pop, cars & bikes, sports, celebrities, and more unique themes designed for fans worldwide. 🌐 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 When installed, this extension opens a new tab at https://gameograf.com , where you can explore similar themes and tutorials. Some links on our website may include affiliate partnerships, which means Gameograf.com may earn a small commission if you purchase through them. These commissions help us maintain and improve our free extensions.

Frequently Asked Questions