Research Roundup: Recent Probable Charming Kitten Infrastructure

Howdy, and welcome to the ThreatConnect Research Roundup, a collection of recent findings by our Research Team and items from open source publications that have resulted in Observations of related indicators across ThreatConnect’s CAL™ (Collective Analytics Layer).

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In this edition, we cover:

  • APT35 / Charming Kitten / Phosphorus
  • Mustang Panda PlugX
  • Emotet
  • WastedLocker
  • WordPress Vulnerabilities


Roundup Highlight: Recent Probable Charming Kitten Infrastructure

20200803B: Microsoft Phosphorus Sinkhole Domain Siblings


Our highlight in this Roundup is Incident 20200803B: Microsoft Phosphorus Sinkhole Domain Siblings. ThreatConnect Research reviewed the following domains (and the notable IPs that previously hosted them) that began resolving to Microsoft’s Phosphorus sinkhole in late July 2020: ( ( ( ( ( (

We identified several additional domains that probably are related to Phosphorus / APT35 / Charming Kitten based on co-locations with the aforementioned domains on likely dedicated servers. The relevant IPs, the additional domains, and other notable IPs hosting those domains include the following: (,,, (

Finally, we reviewed those additional, likely dedicated IPs identified from the hosting history for the co-located domains. This identified another set of domains that probably are associated with Phosphorus based on those co-locations and naming convention reuse: (prev


ThreatConnect Research Team Intelligence: Items recently created or updated in the ThreatConnect Common Community by our Research Team.

Technical Blogs and Reports Incidents with Active and Observed Indicators: Incidents associated to one or more Indicators with an Active status and at least one global Observation across the ThreatConnect community. These analytics are provided by ThreatConnect’s CAL™ (Collective Analytics Layer).



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ThreatConnect Research Team
About the Author
ThreatConnect Research Team

The ThreatConnect Research Team: is an elite group of globally-acknowledged cybersecurity experts, dedicated to tracking down existing and emerging cyber threats. We scrutinize trends, technology and socio-political motivators to develop comprehensive knowledge of the cyber landscape. Then, we share what we’ve learned so that you can protect your organization, and your team can take precise action against threats.