Szolgáltatóknak

I spotted another interesting file that uses, once again, steganography. It seems to be a trend (see one of my previous diaries[ 1]). The file is an malicious Excel sheet called blcopy.xls. Office documents are rare these days because Microsoft improved the rules to allow automatic macro execution[ 2]. But it does not mean that Office documents can't execute malicious code. In the sample I found (SHA256:c92c761a4c5c3f44e914d6654a678953d56d4d3a2329433afe1710b59c9acd3a), there are other embedded XLS sheets:

The House Democrats asked for a full assessment of the NVD and CVE systems.