EUVD-2000-0276

Malware in sbrugna...

Researchers Uncover New Attempts by Qakbot Malware to Evade Detection

The operators behind the Qakbot malware are transforming their delivery vectors in an attempt to sidestep detection. "Most recently, threat actors have transformed their techniques to evade detection by using ZIP file extensions, enticing file names with common formats, and Excel XLM 4.0 to trick...

At long last, Microsoft is disabling Excel 4.0 macros by default

Sometimes good news in the security world comes unexpectedly. This is one of those times. After three decades of macro viruses, and three decades of trying to convince every single Excel user individually to disable macros, Microsoft is going disable Excel 4.0 macros for everyone. Better late tha...

XLMMacroDeobfuscator - Extract And Deobfuscate XLM Macros (A.K.A Excel 4.0 Macros)

XLMMacroDeobfuscator can be used to decode obfuscated XLM macros also known as Excel 4.0 macros. It utilizes an internal XLM emulator to interpret the macros, without fully performing the code. It supports both xls, xlsm, and xlsb formats. It uses xlrd2, pyxlsb2 and its own parser to extract cell...

XLM + AMSI: New runtime defense against Excel 4.0 macro malware

We have recently expanded the integration of Antimalware Scan Interface AMSI with Office 365 to include the runtime scanning of Excel 4.0 XLM macros, to help antivirus solutions tackle the increase in attacks that use malicious XLM macros. This integration, an example of the many security feature...

XLM + AMSI: New runtime defense against Excel 4.0 macro malware

We have recently expanded the integration of Antimalware Scan Interface AMSI with Office 365 to include the runtime scanning of Excel 4.0 XLM macros, to help antivirus solutions tackle the increase in attacks that use malicious XLM macros. This integration, an example of the many security feature...

Microsoft Office for Mac cannot properly disable XLM macros

Overview The Microsoft Office for Mac option "Disable all macros without notification" enables XLM macros without prompting, which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. Description XLM macros Up to and including Microsoft Excel 4.0, a macro...

CVE-2000-0277

Microsoft Excel 97/2000 are affected by the XLM Text Macro vulnerability, where Excel fails to warn when macros in external text files are executed, potentially allowing arbitrary commands via a macro virus. The issue occurs when references to external XLM macro files are present; Excel may not d...