Strela Stealer, first identified by DCSO in late 2022, is a type of information-stealing malware primarily designed to exfiltrate email account credentials from widely used email clients, including Microsoft Outlook and Mozilla Thunderbird. This malware initially targeted Spanish-speaking users through spam email campaigns containing malicious ISO attachments, which included a .lnk file and a polyglot file. When executed, the .lnk file triggered the polyglot file, executing both the lure html and Strela stealer DLL using “rundll32.exe”.