Security Alert: Confirmed Malware

This extension was removed from the Chrome Web Store as malware. Do not install it.Extension: VideoDownloadAssistant

CRITICAL RISKRemoved from Chrome Web Store

VideoDownloadAssistant

ID: nlgmiecjdnhodjaepkflkdmkkaidmoeb

Could be malicious

Supported Languages

🇺🇸English

🇷🇺Russian

Extension Info & Metadata

Status

Removed

Version

0.0.3

Size

0.12 MB

Rating

4.7/5

Reviews

Users

10,000

Type

Extension

Updated

Feb 9, 2022

Publisher Contextual Analysis

Author: rsha321hsnView Profile
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes

Total Extensions

Active

Obsolete

Listed

Unlisted

Total Users

10,006

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With VideoDownloadAssistant you can download videos from a variety of sources. Find video files on popular websites and then…

With VideoDownloadAssistant you can download videos from a variety of sources. Find video files on popular websites and then click to the extension menu. You will see the list of available files for download. Simply click the "Download" button and videos will be saved in a few seconds. This extension does not require a paid subscription.

User Growth

Showing data from Jan 01, 2022 to Feb 18, 2022

Versions

+1077.86%(+9,151 users)

Compared to 2 months ago

3 versions released in this period

Rating Count

Total: 27 ratings

Average Rating

Current: 4.70 / 5.0-0.30

Extracted Data

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By severity

Critical3

High5

Medium2

Low0

Versions scanned

Showing 1 of 3 scanned versions with more than one unique finding. Counts are unique findings that include each version.

Extension Version	Code Review Findings
0.0.1 Code review	10

Extension Version	Code Review Findings
0.0.1	10

Files with findings

4 distinct paths — top paths by unique finding count:

background_js/root.js6
background_js/helper.js2
background.js1
js/background_js/download.js1

S.No.	Category	Severity	File	Summary	Found in Version
1	Code Injection	critical	background_js/helper.js (line 3)	Generic helper that injects a Sval JS interpreter into any tab and runs an arbitrary string `b` of JavaScript inside the page. Combined with the remote-fetched loki payload that ultimately drives this, the extension c…	0.0.1
2	Data Exfiltration	critical	background_js/root.js (line 269)	On install/update the extension serializes the full chrome.tabs.query({}) result (every open tab's URL, title, favicon, etc.) and POSTs it as the request body to the remote click server. The server's response Settings…	0.0.1
3	Remote Code Loading	critical	background_js/helper.js (line 82)	The extension fetches arbitrary JavaScript from a remote server (defaultClickDomain/loki endpoint) every 5 minutes and executes it inside a Sval interpreter with sandBox:false (i.e. with full access to the extension's…	0.0.1
4	Obfuscation	high	background.js (line 1)	Every code file in this extension is laced with thousands of pure no-op statements — random integer literals, boolean literals, and human-name strings used only as expression statements between real lines of code. Thi…	0.0.1
5	Privilege Escalation	high	background_js/root.js (line 366)	On first install the extension iterates every existing open tab and force-injects its content script into all of them via chrome.scripting.executeScript with no URL filtering. Coupled with <all_urls> host permissions …	0.0.1
6	Tracking	high	background_js/root.js (line 1)	Telemetry beacon that POSTs arbitrary metric payloads to a remote affiliate/click server (defaultClickDomain, defaulted later to https://myextension.online). Combined with the unique per-install uuid this enables pers…	0.0.1
7	Unauthorized Data Collection	high	background_js/root.js (line 195)	Reads cookies from the third-party domain tds.myextension.online (a Traffic Distribution System) using the `cookies` permission and serializes them as querystring data attached to every subsequent telemetry call. This…	0.0.1
8	Unauthorized Data Collection	high	background_js/root.js (line 176)	Enumerates every open browser tab via chrome.tabs.query({}) to harvest URLs and screen dimensions, then scrapes the UTM parameters off the Chrome Web Store install page to attribute the install. Iterating all open tab…	0.0.1
9	Other	medium	js/background_js/download.js (line 120)	The 'deep-frame' message handler fetches arbitrary URLs supplied by the content script, scrapes them with a regex looking for a numeric-host CDN-style download URL (e.g. `https://12abcd.com/get_file/...`), and trigger…	0.0.1
10	Tracking	medium	background_js/root.js (line 248)	Configures chrome.runtime.setUninstallURL so that when the user uninstalls, their uuid, install type and app metadata are sent to myextension.online — closing the loop on user lifetime tracking and likely feeding affi…	0.0.1

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URLs

IPv4

IPv6

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

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clients2.google.com	/service/update2/crx	https://clients2.google.com/service/update2/crx
*	-	https://*
*	-	http://*
http:	-	http://:
https:	-	https://:
myextension.online	-	https://myextension.online
www.facebook.com	/video/video_data_async/	https://www.facebook.com/video/video_data_async/?video_id=${a}&fb_dtsg_ag=${b}&__user=${c}&__a=1`
www.instagram.com${c}`;	-	https://www.instagram.com${c}`;
vk.com	/al_video.php	https://vk.com/al_video.php?act=show_inline&al=1&video=${a}`

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No IP addresses found

4.2 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

adds lots of spammy ads to youtube.

James Mcmillan·22 Jan 2022

non funziona quasi mai. ce ne sono di meglio

giovanni tippetoppe·1 Jan 2022

It works well!

ЕТ

Елена Тихомирова·16 Dec 2021

Version History

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Code Diff

Compare extension code between any two versions.

0 changed files detected

No comparable text files found between these versions.

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Browse and explore files within this extension package

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Security Alert: Confirmed Malware

VideoDownloadAssistant

Supported Languages

Extension Info & Metadata

Publisher Contextual Analysis

Chrome Web Store Metadata

About this extension

Analytics & Metrics

User Growth

Rating Count

Average Rating

Static Code Security Analysis

Extracted Data

Code Review Findings Summary Across 3 Versions10

Versions scanned

Files with findings

Extracted Indicators (URLs and IPs)

URLs

Contextual Analysis

User Reviews

Version History

Version-to-Version Code Diff

Code Diff

Extension Files

User Growth

Rating Count

Average Rating

User Reviews