A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection.

Stealers are a group of malicious software that are intended for gaining unauthorized access to users’ information and transferring it to the attacker. The stealer malware category includes various types of programs that focus on their particular kind of data, including files, passwords, and cryptocurrency. Stealers are capable of spying on their targets by recording their keystrokes and taking screenshots. This type of malware is primarily distributed as part of phishing campaigns.

StrelaStealer is a malware that targets email clients to steal login credentials, sending them back to the attacker’s command-and-control server. Since its emergence in 2022, it has been involved in numerous large-scale email campaigns, primarily affecting organizations in the EU and U.S. The malware’s tactics continue to evolve, with attackers frequently changing attachment file formats and updating the DLL payload to evade detection.