@BushidoToken Threat Intel

Background Active since at least August 2021, a new English-speaking threat actor calling themselves "1977" has developed and advertised a new eCrime market on multiple underground forums called  Darth Maul Shop . This blog aims to highlight some of the key aspects of a new emerging eCrime market, analyze its reception by other threat actors, and discuss the underground cybercrime communities making money buying and selling credentials without launching any intrusions themselves. If you want to learn more about Initial Access Brokers (IABs), SentinelOne recently shared a good up-to-date overview of this type of threat actor and how they interface with various ransomware groups and the types of services they offer. These IABs can be just as dangerous as the ransomware groups themselves, as they are capable of infiltrating a target network and achieving the privileges of "Domain Admin (DA) access with reach to over 10,000 hosts. " The eCrime market has also shifted r...

  Phishing threat actors continue to launch successful credential harvesting campaigns via compromised Office 365 accounts. One of the most common themes for these campaigns is a "shared file" notification, whereby a compromised account shares a file with a user that is hosted in the SharePoint drive. The file is usually a PDF document that contains a URL to an external site embedded in an "open document" or "view file" button. If the user clicks on it and enters their credentials they are redirected to login.microsoftonline.com. Although this is an older scam, that has been around for several years, it is still highly effective and is being used to leap from one organisation to another. In this blog, I will analyse a long running phishing campaign that has compromised at least 45 different SharePoint accounts belonging to a variety of organisations over the last year. Fig. 1 - The typical phishing chain used in this campaign Fig. 2 - Various PDF documents...