![]() ![]() I’ll use two examples to explain how Excel files can be used to spread malware. ![]() Normally, VBA is used to develop programs for Excel to perform some tasks. VBA is a programming language used by Microsoft Office suite. xlsm) that spread malware by executing malicious VBA (Visual Basic for Applications) code. Lately, Fortinet has collected a number of email samples with Excel files attached (.xls. Now it seems that it is becoming more and more popular to spread malware using malicious Excel files. Over the last few years we have received a number of emails with attached Word files that spread malware. ![]()
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