![]() Verify the email sender and content before downloading attachments or selecting embedded links from emails.Users can thwart new QAKBOT variants and other threats that spread through emails by following some of these best practices:.It is not the first time that we have observed intrusions via QAKBOT leading to Black Basta. This is based on overlapping TTPs and infrastructure observed in Black Basta attacks. Once the user opens the HTML page in the browser, the script is decoded and the payload is assembled.īased on our investigations, we can confirm that the QAKBOT-to-Brute Ratel-to-Cobalt Strike kill chain is associated with the group behind the Black Basta Ransomware. In this case, the malware arrives as a password-protected ZIP file delivered via HTML smuggling, which allows the attacker to “smuggle” an encoded malicious script into an HTML attachment or web page. “Obama208”) also dropping Brutel Ratel C4 as a second-stage payload. ![]() In another, more recent, incident, Trend Micro Research spotted QAKBOT using the “Obama” distributor ID prefix (i.e. We assess based on the level of access and discovery activity that the likely final actions would have been a domain-wide ransom deployment. The threat actors were then evicted from the environment before any final actions could be taken. The following list is the beacon C
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