🪝🚨#PhishingAlert: #MailMarshal detected an active hiring-themed #phishing campaign that impersonates the background-screening provider HireRight and abuses #Calendly to deliver #ScreenConnect.
The email links to an attacker-created Calendly routing form with a fake document-review button, such as 'View Document' or 'View Proposal'. Clicking it submits a Calendly Form Builder request that returns an 'arbitrary_url' result pointing to a ScreenConnect MSI installer. The browser then downloads the MSI from the attacker-controlled ScreenConnect instance, and running it gives the attacker remote access to the device.
IOCs:
Example abused Calendly URLs:
hxxps[://]calendly[.]com/d/dt89-7hh-5ww
hxxps[://]calendly[.]com/d/dvcz-23t-bf6
hxxps[://]calendly[.]com/d/d4jf-gpc-ddy
ScreenConnect instance payload URL:
hxxps[://]treffert[.]screenconnect[.]com/Bin/ScreenConnect[.]ClientSetup[.]msi?e=Access&y=Guest
#RMM #IOC #cybersecurity #spiderlabs
The email links to an attacker-created Calendly routing form with a fake document-review button, such as 'View Document' or 'View Proposal'. Clicking it submits a Calendly Form Builder request that returns an 'arbitrary_url' result pointing to a ScreenConnect MSI installer. The browser then downloads the MSI from the attacker-controlled ScreenConnect instance, and running it gives the attacker remote access to the device.
IOCs:
Example abused Calendly URLs:
hxxps[://]calendly[.]com/d/dt89-7hh-5ww
hxxps[://]calendly[.]com/d/dvcz-23t-bf6
hxxps[://]calendly[.]com/d/d4jf-gpc-ddy
ScreenConnect instance payload URL:
hxxps[://]treffert[.]screenconnect[.]com/Bin/ScreenConnect[.]ClientSetup[.]msi?e=Access&y=Guest
#RMM #IOC #cybersecurity #spiderlabs