Proofpoint impersonator steal Microsoft, Google logins in phishing campaign | #cybersecurity | #cyberattack


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Clever hackers dodged Microsoft security by pretending to be a cyber security firm

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Hackers impersonating cyber security company Proofpoint have launched a new phishing campaign targeting victims’ Microsoft and Google email credentials.

Researchers at Armorblox discovered emails claiming to contain a secure file sent via Proofpoint as a link. The problem was spotted at an unnamed global communications company with around 1,000 mailboxes at risk from the scam.

“Clicking the link took victims to a splash page that spoofed Proofpoint branding and contained login links for different email providers. The attack included dedicated login page spoofs for Microsoft and Google,” said researchers.

 
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The email’s subject line was “RE: Payoff Request” and claimed to contain a mortgage-related file sent via Proofpoint along with an email footer exhorting the importance of confidentiality. Researchers said that adding “RE” to the email title is a tactic we have observed scammers using before — this signifies an ongoing conversation and might make victims click the email faster.

After clicking the pretend “secure” email link in the email, victims would then see a web page with the Proofpoint logo and spoofed login buttons for Google, Outlook, and Office 365.

“Clicking on the Google and Office 365 buttons led to dedicated spoofed login flows for Google and Microsoft, respectively. Both flows asked for the victim’s email address and password,” said researchers.

These pages were hosted the “greenleafproperties[.]co[.]uk” parent domain. The domain’s WhoIs record shows it was last updated in April 2021, according to researchers. They added the URL currently redirects to “cvgproperties[.]co[.]uk”.

“The barebones website with questionable marketing increases the possibility that this is a dummy site,” researchers said.

According to researchers, phishing emails replicate existing workflows within organizations. “When we see emails, we’ve already seen before, our brains tend to employ System 1 thinking and take quick action,” they added.

The email managed to get past Microsoft email security, according to researchers. “This email had a Spam Confidence Level (SCL) score of 1, which means Microsoft determined the email was not spam,” said researchers.

Researchers recommended users subject any email to an eye test that includes inspecting the sender’s name and email address, the language within the email, and any logical inconsistencies. They also recommended organizations deploy multi-factor authentication (MFA) on all business and personal accounts.

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