ISC Stormcast For Tuesday, September 27th 2016 https://isc.sans.edu/podcastdetail.html?id=5183
ISC Stormcast For Monday, September 26th 2016 https://isc.sans.edu/podcastdetail.html?id=5181

VBA and P-code

Published: 2016-09-26
Last Updated: 2016-09-26 10:32:27 UTC
by Didier Stevens (Version: 1)
3 comment(s)

I want to draw your attention to some great work Dr. Bontchev did.

pcodedmp.py is a VBA P-code disassembler. Microsoft Office documents contain VBA macros in several forms. They contain the source code, but also compiled P-code. Dr. Bontchev created a proof-of-concept document that executes P-code and does not contain the corresponding source code. Here is the output from his pcodedmp.py tool for his PoC document:

python pcodedmp.py -d poc2b.doc

Processing file: poc2b.doc
===============================================================================
Module streams:
Macros/VBA/ThisDocument - 1949 bytes
Line #0:
        FuncDefn (Sub / Property Set) func_00000078
Line #1:
        LitStr 0x001D "This could have been a virus!"
        Ld vbInformation
        Ld vbOKOnly
        Add
        LitStr 0x0006 "Virus!"
        ArgsCall MsgBox 0x0003
Line #2:
        LitStr 0x0008 "calc.exe"
        Paren
        ArgsCall Shell 0x0001
Line #3:
        EndSub

 

Dr. Bontchev also coded a plugin for oledump.

Didier Stevens
Microsoft MVP Consumer Security
blog.DidierStevens.com DidierStevensLabs.com

Keywords: maldoc pcode vba
3 comment(s)

Comments

cwqwqwq

www

Nov 17th 2022
4 months ago

eweew<a href="https://www.seocheckin.com/edu-sites-list/">mashood</a>

EEW

Nov 17th 2022
4 months ago

WQwqwqwq[url=https://www.seocheckin.com/edu-sites-list/]mashood[/url]

qwq

Nov 17th 2022
4 months ago

dwqqqwqwq mashood

mashood

Nov 17th 2022
4 months ago

[https://isc.sans.edu/diary.html](https://isc.sans.edu/diary.html)

isc.sans.edu

Nov 23rd 2022
4 months ago

[https://isc.sans.edu/diary.html | https://isc.sans.edu/diary.html]

isc.sans.edu

Nov 23rd 2022
4 months ago

What's this all about ..?

isc.sans.edu

Dec 3rd 2022
3 months ago

password reveal .

isc.sans.edu

Dec 3rd 2022
3 months ago

<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure:

<a hreaf="https://technolytical.com/">the social network</a> is described as follows because they respect your privacy and keep your data secure. The social networks are not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go.

<a hreaf="https://technolytical.com/">the social network</a> is not interested in collecting data about you. They don't care about what you're doing, or what you like. They don't want to know who you talk to, or where you go. The social networks only collect the minimum amount of information required for the service that they provide. Your personal information is kept private, and is never shared with other companies without your permission

isc.sans.edu

Dec 26th 2022
2 months ago

https://thehomestore.com.pk/

isc.sans.edu

Dec 26th 2022
2 months ago

Login here to join the discussion.


Diary Archives