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Issue 810813 link

Starred by 3 users

Issue metadata

Status: Assigned
Owner:
Cc:
Components:
EstimatedDays: ----
NextAction: ----
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Pri: 3
Type: Bug



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User report: popunder/fullscreen abuse

Project Member Reported by a...@chromium.org, Feb 9 2018

Issue description

From the article https://blog.malwarebytes.com/cybercrime/2017/12/tech-support-scammers-make-browser-lockers-resilient/ and from email with the author, Jerome Segura:

The Fiddler attachment "TSS_close_dialog" is from the article. The author says, "To trigger the pop-under tab, you need to click on the fake red close button."

Another abuse recording from Fiddler is "Replay_Popunder". The author says, "Here's another one, also hiding some of the user choices in a pop-under tab. To trigger it, you need to click anywhere on the fake site."
 
TSS_close_dialog.saz
492 KB Download
Replay_Popunder.saz
367 KB Download

Comment 1 by a...@chromium.org, Feb 9 2018

Bug 810786 was filed about the clipping of the dialog.
Tested on Windows 7 64bit, Google Chrome Version 64.0.3282.140 (Official Build) (64-bit)

Steps to reproduce behaviour with 'Replay_Popunder.saz'

1) if possible, use Fiddler's AutoResponder to revisit the site
2) click anywhere on the main site 1 time to trigger pop-under
3) click again anywhere on the main site to trigger fullscreen mode

result: user is effectively locked in fullscreen mode

Note: 'TSS_close_dialog.saz' is missing some components for offline replay to to help with the locking trick, but I believe it is the same mechanism.
Status: Assigned (was: Untriaged)
This bug has an owner, thus, it's been triaged. Changing status to "assigned".
Labels: Hotlist-Abusive

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