Newly Observed Com Infrastructure

    Date: 09/11/2026

    Severity: High

    Summary

    We continue tracking infrastructure potentially linked to Com-affiliated threat actors, including Bling Libra and CL-CRI-1116, using known infrastructure fingerprints. Since August 28, 2026, we identified 17 newly created FQDNs, including domains designed to impersonate known brands. Analysis of subdomains associated with these FQDNs identified organizations that may be targeted through vishing campaigns based on previously observed activity. Potentially targeted sectors include Financial Services, High Technology, IT Services, Non-Profit, Professional & Legal Services, Transportation & Logistics, and Wholesale & Retail.

    Indicators of Compromise (IOC) List 

    Domains/URLs

    mailchimp-passkey.com

    passkey-mailchimp.com

    sg-passkey.com

    sso-passkey.com

    passkey-sendgrid.com

    sendgridpasskey.com

    passkeymailchimp.com

    passkey-mfa.com

    registermymfa.com

    signinoptions.com

    mfa-settings.com

     installpasskey.com

    register-passkeys.com

    deploypasskeys.com

    mfa-registry.com

    setupmysso.com

    register-passkey.com

    Gurucul Threat Detection and Incident Response (TDIR) Queries for Detection

    Detection Query 1 :

    domainname like "sendgridpasskey.com" or url like "sendgridpasskey.com" or siteurl like "sendgridpasskey.com" or domainname like "passkey-mailchimp.com" or url like "passkey-mailchimp.com" or siteurl like "passkey-mailchimp.com" or domainname like "passkey-mfa.com" or url like "passkey-mfa.com" or siteurl like "passkey-mfa.com" or domainname like "register-passkey.com" or url like "register-passkey.com" or siteurl like "register-passkey.com" or domainname like "mfa-settings.com" or url like "mfa-settings.com" or siteurl like "mfa-settings.com" or domainname like "mfa-registry.com" or url like "mfa-registry.com" or siteurl like "mfa-registry.com" or domainname like "sso-passkey.com" or url like "sso-passkey.com" or siteurl like "sso-passkey.com" or domainname like "register-passkeys.com" or url like "register-passkeys.com" or siteurl like "register-passkeys.com" or domainname like "registermymfa.com" or url like "registermymfa.com" or siteurl like "registermymfa.com" or domainname like "sg-passkey.com" or url like "sg-passkey.com" or siteurl like "sg-passkey.com" or domainname like "signinoptions.com" or url like "signinoptions.com" or siteurl like "signinoptions.com" or domainname like "deploypasskeys.com" or url like "deploypasskeys.com" or siteurl like "deploypasskeys.com" or domainname like "setupmysso.com" or url like "setupmysso.com" or siteurl like "setupmysso.com" or domainname like "passkeymailchimp.com" or url like "passkeymailchimp.com" or siteurl like "passkeymailchimp.com" or domainname like "installpasskey.com" or url like "installpasskey.com" or siteurl like "installpasskey.com" or domainname like "passkey-sendgrid.com" or url like "passkey-sendgrid.com" or siteurl like "passkey-sendgrid.com" or domainname like "mailchimp-passkey.com" or url like "mailchimp-passkey.com" or siteurl like "mailchimp-passkey.com"

    Reference:    

    https://github.com/PaloAltoNetworks/Unit42-timely-threat-intel/blob/main/2026-09-09-Newly-Observed-Com-Infrastructure.txt                                      


    Tags

    MalwareThreat ActorBling LibraVishingFinancial ServicesInformation TechnologyTransportation Systems

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