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Nested self-extracting RAR

Updated on 2022-10-21

Trustwave SpiderLabs spotted a rise in threats contained in password-protected archives, with 96% of these being spammed by Emotet.


Trustwave researchers have documented a recent malspam technique where spam groups use nested archive files to hide payloads from security solutions, and sometimes, with some exploit chains involving up to three nested files and even the use of password-protected files and self-extracting file formats. Read more: Archive Sidestepping: Emotet Botnet Pushing Self-Unlocking Password-Protected RAR

Alex Lim is a certified IT Technical Support Architect with over 15 years of experience in designing, implementing, and troubleshooting complex IT systems and networks. He has worked for leading IT companies, such as Microsoft, IBM, and Cisco, providing technical support and solutions to clients across various industries and sectors. Alex has a bachelor’s degree in computer science from the National University of Singapore and a master’s degree in information security from the Massachusetts Institute of Technology. He is also the author of several best-selling books on IT technical support, such as The IT Technical Support Handbook and Troubleshooting IT Systems and Networks. Alex lives in Bandar, Johore, Malaysia with his wife and two chilrdren. You can reach him at [email protected] or follow him on Website | Twitter | Facebook

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