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New Phishing Scam Asks You to Manage Your Undelivered Email

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A new phishing campaign is underway that pretends to be a list undelivered email being held for you on your Outlook Web Mail service. Users are then prompted to decide what they wish to do with each mail, with the respective links leading to a fake login form.

Recently, we have seen quite a few interesting spam campaigns such as account cancellation notices and alerts about unusual volumes of file deletions.

This campaign is just as interesting as it uses the subject line of “Notifications | undelivered emails to your inbox” and pretends to be a list of email being held on the server for you.

Office 365 Phishing Email
Office 365 Phishing Email

The text of this phishing scam can be read below.

Notifications | undelivered emails to your inbox

Incoming Message Report for            
Messages are pending to be deliver to Mailbox since: 27 May2019, due to email validation error.

You have below mails pending to be release kindly (Release, Allow OR Deny). 

Date	From	Subject
May 27, 2019 11:43:12 a.m.	PT. Kones Taeya Industry	RE: Shipping info for PO # PPWINPVC094
  Score: 5.8, For:, Size: 4.45 KB	Release | Always Allow | Deny

May 27, 2019 07:30:21 p.m.
Re:RE:Fwd: Bank swift
  Score: 7.5, For:, Size: 7.13 KB	Release | Always Allow | Deny

May 27, 2019 11:28:14 p.m.
RE: Payment Authorization Form - WIRE - All State Express Load # 1689
  Score: 7.5, For:, Size: 13.37 KB	Release | Always Allow | Deny

May 26, 2019 12:38:08 p.m.
DHL - Air Waybill
  Score: 8.1, For:, Size: 22.94 KB	Release | Always Allow | Deny

This phishing email then prompts you to decide whether you want to delete all of the emails, deny them, allow them to be delivered, or to whitelist them for the future. Regardless of the link you click on , you will be brought to a fake “Outlook Web App” landing page that asks you to enter your login credentials. 

Phishing Scam Landing Page

Once you enter your credentials, the page will save them so that they can be retrieved by the scammer at a later date.

Thankfully, unlike recent phishing landing pages hosted on Excel Online or Microsoft Azure, this phishing scam utilizes a landing page hosted on a hacked site. This make it easier to detect as suspicious as the URL will not be the correct one for your email server.

As always, when receiving emails that lead to login forms, make sure to examine the URL where the form resides before entering your login credentials. If there is any doubt, always ask your system administrators.

Thx to Michael Gillespie for the sample.

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