excel

2 posts with this tag

Allowing #XLSM and #XLSB files ? Stop it to save your Infra

I understand that a company having legacy systems running always. But, are you permitting XLSM and XLSB filetypes ? #STOP it as fast as possible !! Following images are from a malware packer, possibly related with latest #Zloader and other infections. Credit @DissectMalware [https://twitter.com/DissectMalware]From the 2nd screenshot it

2 years ago • 1 min read

Malware

[Custom #YARA ] #XLS #macro based #malware downloader using URLDownloadToFileA

Received numbers of sample submission of invoice themed XLS which are not getting detected on VT [https://virustotal.com] properly using any reputed Anti Virus engine. There is nothing abnormal happening except it is showing following screen when opened. Pretty unusual - huh ! So, after finding few sample which is

3 years ago • 7 min read