Security Alert: Confirmed Malware

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

CRITICAL RISKRemoved from Chrome Web Store

Microsoft Outlook

ID: ajanlknhcmbhbdafadmkobjnfkhdiegm

Could be malicious

Supported Languages

🇪🇹Amharic

🇸🇦Arabic

🇧🇩Bengali

🇧🇷Brazilian Portuguese

🇬🇧British English

🇧🇬Bulgarian

🇪🇸Catalan

🇨🇳Chinese (Simplified)

🇹🇼Chinese (Traditional)

🇭🇷Croatian

🇨🇿Czech

🇩🇰Danish

🇳🇱Dutch

🇺🇸English

🇪🇪Estonian

🇵🇭Filipino

🇫🇮Finnish

🇫🇷French

🇩🇪German

🇬🇷Greek

🇮🇳Gujarati

🇮🇱Hebrew

🇮🇳Hindi

🇭🇺Hungarian

🇮🇩Indonesian

🇮🇹Italian

🇯🇵Japanese

🇮🇳Kannada

🇰🇷Korean

🇱🇻Latvian

🇱🇹Lithuanian

🇲🇾Malay

🇮🇳Malayalam

🇮🇳Marathi

🇳🇴Norwegian

🇮🇷Persian

🇵🇱Polish

🇵🇹Portuguese

🇷🇴Romanian

🇷🇺Russian

🇷🇸Serbian

🇸🇰Slovak

🇪🇸Spanish

🇸🇪Swedish

🇮🇳Tamil

🇮🇳Telugu

🇹🇭Thai

🇹🇷Turkish

🇺🇦Ukrainian

🇺🇸US English

🇻🇳Vietnamese

Extension Info & Metadata

Status

Removed

Version

1.0.4

Size

0.29 MB

Rating

1.9/5

Reviews

209

Users

200,000

Type

Extension

Updated

Nov 8, 2023

Publisher Contextual Analysis

Trusted

Author: MicrosoftView Profile
Privacy: Privacy Policy
Help: Help Center
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Total Extensions

Active

Obsolete

Listed

Unlisted

Total Users

34,230,420

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Send and receive email, manage your calendar, tasks, and more without opening a new tab.

The Microsoft Outlook browser extension brings you the power of mail, calendar, contacts, and tasks using an icon in the browser. You can quickly access your Outlook work account or your Outlook.com or Hotmail account without switching to another tab or app. Features - Access work or personal accounts - Read, send, and manage email and get notifications - Create events, view upcoming ones, and join online meetings - Create, track, and manage tasks - Add and view contacts Great for doing all this without switching tabs - Reading an important message - Checking your calendar - Adding a task based on what you’re reading on the web - Fast look up of a contact’s phone number - Referring to info on a webpage while writing an email

User Growth

Showing data from Jan 01, 2022 to Dec 31, 2022

Versions

No change in user count

Compared to 3 months ago

3 versions released in this period

Rating Count

Total: 76 ratings

Average Rating

Current: 3.14 / 5.0-0.52

Extracted Data

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By severity

Critical2

High2

Medium2

Low0

Versions scanned

Showing 1 of 5 scanned versions with more than one unique finding. Counts are unique findings that include each version.

Extension Version	Code Review Findings
0.0.29 Code review	6

Extension Version	Code Review Findings
0.0.29	6

Files with findings

4 distinct paths — top paths by unique finding count:

contentScript.bundle.js2
popup.bundle.js2
auth.html1
background.bundle.js1

S.No.	Category	Severity	File	Summary	Found in Version
1	Network Interception	critical	popup.bundle.js (line 60)	The popup registers a blocking webRequest.onBeforeSendHeaders listener against ei={urls:["https:///"]}, intercepting ALL outbound HTTPS request headers from the browser with the extraHeaders flag (required to access…	0.0.29
2	Network Interception	critical	popup.bundle.js (line 60)	The popup registers a blocking onHeadersReceived listener with no explicit URL filter, causing the fallback ei={urls:["https:///"]} to activate — intercepting ALL HTTPS response headers in the browser. For responses…	0.0.29
3	Credential Theft	high	contentScript.bundle.js (line 31)	The content script runs at document_start on Microsoft login pages (login.live.com and login.microsoftonline.com). On the Outlook redirect URI page, it captures window.location.hash — which in Microsoft's MSAL redirec…	0.0.29
4	Network Interception	high	background.bundle.js (line 32)	The background script uses a blocking onHeadersReceived listener (guarded to the Outlook inbox URL) to modify security headers on responses. The content-security-policy frame-ancestors directive is injected with the e…	0.0.29
5	Obfuscation	medium	contentScript.bundle.js (line 31)	Multiple CDN URLs are obfuscated using a string-reversal technique — a classic pattern used to evade static analysis tools and content security policy scanners that pattern-match URL strings. While the decoded URLs re…	0.0.29
6	Privilege Escalation	medium	auth.html (line 1)	auth.html is exposed as a web-accessible resource to a second extension ID (kkpalkknhlklpbflpcpkepmmbnmfailf) in addition to this extension's own ID. More critically, auth.html loads all four extension bundles simulta…	0.0.29

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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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login.microsoftonline.com	-	https://login.microsoftonline.com
outlook.office.com	/mail/mini/opxdeeplink/mail/inbox	https://outlook.office.com/mail/mini/opxdeeplink/mail/inbox
www.w3.org	/1999/xhtml	http://www.w3.org/1999/xhtml
www.w3.org	/2000/svg	http://www.w3.org/2000/svg
www.w3.org	/1999/xlink	http://www.w3.org/1999/xlink
browser.pipe.aria.microsoft.com	/Collector/3.0/	https://browser.pipe.aria.microsoft.com/Collector/3.0/
outlook.office.com	/mail/email_placeholder/mini/opxdeeplink/mail	https://outlook.office.com/mail/email_placeholder/mini/opxdeeplink/mail
outlook.live.com	/mail/email_placeholder/mini/opxdeeplink/mail	https://outlook.live.com/mail/email_placeholder/mini/opxdeeplink/mail
login.microsoftonline.com	/common/	https://login.microsoftonline.com/common/
login.microsoftonline.com	/common/discovery/instance	https://login.microsoftonline.com/common/discovery/instance?api-version=1.1&authorization_endpoint=

Showing 1 to 10 of 30 rows

Rows per page:

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4.3.2.1	IPv4	-
44.5.0.10	IPv4	-

2.2 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

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Abner Wirtz·8 Jun 2024

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

Microsoft Outlook

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 5 Versions6

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 Reviews

User Growth

Rating Count

Average Rating