Fake attachment. Roundcube mail server attacks exploit CVE-2024-37383 vulnerability.


In September 2024, threat intelligence experts from the Positive Technologies Security Expert Center (PT ESC) discovered an email sent to a governmental organization belonging to a CIS country. Timestamps indicate that the email was sent back in June 2024. The email appeared to be a message without text, containing only an attached document.

However, the email client didn’t show the attachment. The body of the email contained distinctive tags with the statement eval(atob(…)), which decode and execute JavaScript code:

Read more…
Source: Positive Technologies


Sign up for our Newsletter


Related:

  • CISA Alert (AA21-062A): Mitigate Microsoft Exchange Server Vulnerabilities

    March 3, 2021

    Cybersecurity and Infrastructure Security (CISA) partners have observed active exploitation of vulnerabilities in Microsoft Exchange Server products. Successful exploitation of these vulnerabilities allows an unauthenticated attacker to execute arbitrary code on vulnerable Exchange Servers, enabling the attacker to gain persistent system access, as well as access to files and mailboxes on the server and to ...

  • Compromised Website Images Camouflage ObliqueRAT Malware

    March 2, 2021

    The ObliqueRAT malware is now cloaking its payloads as seemingly-innocent image files that are hidden on compromised websites. The remote access trojan (RAT), which has been operating since 2019, spreads via emails, which have malicious Microsoft Office documents attached. Previously, payloads were embedded into the documents themselves. Now, if users click on the attachment, they’re redirected ...

  • Ryuk Ransomware: Now with Worming Self-Propagation

    March 2, 2021

    A new version of the Ryuk ransomware is capable of worm-like self-propagation within a local network, researchers have found. The variant first emerged in Windows-focused campaigns earlier in 2021, according to the French National Agency for the Security of Information Systems (ANSSI). The agency said that it achieves self-replication by scanning for network shares, and then ...

  • Fast Flux 101: How Cybercriminals Improve the Resilience of Their Infrastructure to Evade Detection and Law Enforcement Takedowns

    March 2, 2021

    Fast flux is a technique used by cybercriminals to increase their infrastructure’s resilience by making law enforcement takedown of their servers and blocklisting of their IP addresses harder. It is critical for these cybercriminals to maintain their networks’ uptime to avoid losses to their revenue streams, including phishing and scam campaigns, botnet rental and illegal ...

  • Emotet One Month After the Takedown

    March 2, 2021

    2021 got off to a fantastic start for the cybersecurity community with the news that the infamous botnet Emotet had been brought down in a coordinated global operation, “Operation Ladybird.” As the first security vendor to detect and profile the Trojan all the way back in 2014, we’re particularly delighted to be seeing the back of ...

  • Working Windows and Linux Spectre exploits found on VirusTotal

    March 1, 2021

    Working exploits targeting Linux and Windows systems not patched against a three-year-old vulnerability dubbed Spectre were found by security researcher Julien Voisin on VirusTotal. The vulnerability was unveiled as a hardware bug in January 2018 by Google Project Zero researchers. If successfully exploited on vulnerable systems, it can be used by attackers to steal sensitive data, including ...