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Threat insights 0x1F: Clever tactics

July 27, 2024

Your invoice has been generated
hero
  • Rating: ★★★☆☆
  • Date: 2024-07-22
  • Objective: Credential harvesting
  • Analyst: José Morim

This email claims that the user has a due invoice. The goal is to get the recipient, unaware of what service does the invoice belong, to open a PDF document attached to the email:

Page 1

The malicious actors trick the recipient to click on a link embedded in the PDF which sends the victim to a credential harvesting website.

Unusual activity, action required
Email 2
  • Rating: ★★☆☆☆
  • Date: 2024-07-23
  • Objective: Credential harvesting
  • Analyst: José Morim

This email is claiming to be from the recipient email service provider. It falsely claims impending account suspension due to suspicious activity and urges the recipient to login to their email by clicking on the "Verify your identity" button:

Page 2

By clicking the button the victim is lured into a malicious website with the objective of stealing their credentials.

Document awaits your review and signature
Email 3
  • Rating: ★★★☆☆
  • Date: 2024-07-26
  • Objective: Credential harvesting
  • Analyst: José Morim

This email pretends to be a shared document notification informing the recipient about a shared file. There is no file name but instead the recipient is informed that is a secure and encrypted file, in order to arouse curiosity and trick the user into clicking the "View Your Message" button.

Page 3

After they click the button, the user is served a credential harvesting page.

IOCs

TYPEIOC
FILEfbfe3db50d4ae40307b66007715f3507f929dc4b7ea65583366313bb79d79f29
URLhxxps[://]g3o9[.]short[.]gy/ct7TBn
DOMAINpub-b148b1b4b9304dbd80461a366cda853c[.]r2[.]dev
URLhxxps[://]t[.]co/R6uQ3sOuOq
URLhxxps[://]sl[.]tij1111[.]za[.]com/[.]ex/index[.]html

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