2010-02-25
2021-03-03
Just delete that sheet and pretend you never saw that. – tlemaster Dec 30 '16 at 20:23 I hate the fact that the shortcut to create it is Ctrl-F11, which I sometimes accidentally press instead of Alt-F11. Figure 3: Adding Excel 4.0 Macro Sheet. We will write our code in this sheet and then hide it to avoid being suspicious from the target user. We can simply execute a simple on-disk executable using excel 4.0 macros using the below command: Figure 4: Executing calc.exe from disk using Excel 4.0 macros. We can execute the above macro by right More info: https://videos.didierstevens.com/2019/03/31/maldoc-analysis-excel-4-0-macro/ More info: https://videos.didierstevens.com/2019/03/15/349/ The Microsoft Excel 4.0 macro isn't evaluated in the context of the current workbook or sheet. This means that any references should be external and should specify an explicit workbook name.
tl;dr EXCELntDonut takes C# source code as an input, converts it into shellcode, and generates an XLM (Excel 4.0) macro that will inject the shellcode into memory and execute it. Here is the code repo for EXCELntDonut. The Background Excel 4.0 Macro, Old but New! And the last step would be to hide the Macro tab, save the excel sheet as an .xls file and we are done! Ignores the difference in code, I will go further into Spreadsheets with Excel 4.0 macros can be analyzed with oledump.py and plugin plugin_biff.py.
2020-05-26 2019-03-15 Although Microsoft Excel still supports Excel 4.0 (XLM) macros, we encourage you to migrate them to the latest version of Microsoft Visual Basic for Applications (VBA). Migrating your macros lets you take advantage of the improvements to the VBA programming object model.
Apr 12, 2020 Running and debugging an Excel 4.0 macro: In case we have inserted a macro in our Excel sheet like seen below we can execute and debug it a
Learn some neat tricks with these macros, and no need to write 9 Apr 2020 XLM macros - often referred to as Excel 4.0 macros - were the predecessor to VBA scripting in Office, available in early versions of the software Excel 4.0 (XL4) macros are becoming increasingly popular for attackers, as security vendors struggle to play catchup and detect them properly. This technique 5 Apr 2021 Adversaries are finding new ways to weaponize Excel 4.0 macros for delivering additional, more sophisticated malware.
2010-02-25
LMNTRIX has been using Macros for quite some time now. We’ve seen it being used over and over again with word documents for several phishing activities during threat hunting and responding to IR cases over quite a brief period of time.
An Excel 4.0 Macro sheet is for writing OLD style Excel macros (not VBA). Just delete that sheet and pretend you never saw that. – tlemaster Dec 30 '16 at 20:23 I hate the fact that the shortcut to create it is Ctrl-F11, which I sometimes accidentally press instead of Alt-F11. The only correct hint I found was in a screenshot of Excel settings (but these were in German). Is it at all possible to deactivate macros or macro sheets in Excel 4.0 or to always prevent them from
2020-12-09
2019-03-15
Excel 4.0 macros are still supported by default in all recent Microsoft Office versions, including Office 2016.
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Key points Microsoft 365 Roadmap ID 70568 Timing: The new macro setting has currently rolled out to Insiders Slow users Update to admin controls and registry key retirement will occur in May Excel 4.0 Macros. The first sample analyzed below was from March 2019, and the loader is an example of an Excel document weaponized with Excel 4.0 (or XLM) macros.
I recommend reading the previous post to learn more as this article will not be going step-by-step through the analysis process.
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4 Jul 2020 O Avaddon ransomware está explorando macros do Excel 4.0 para implantar um ataque contra usuários.
In this technique, macros are not stored in a VBA project, but are placed inside cells of a spreadsheet containing functions like Exec(), Halt(), Auto_Open() etc.