ISC StormCast for Monday, March 30th 2015 http://isc.sans.edu/podcastdetail.html?id=4417
Malicious XML: Matryoshka Edition
A couple of days ago I received another malicious document (078409755.doc B28EF236D901A96CFEFF9A70562C9155). Unlike the XML file I wrote about before, this one does not contain VBA macros:
But as you can see, it should contain an embedded object. The base64 code found inside the XML object decodes to an OLE file. The single stream present in this OLE file contains ZLIB compressed data (identifiable via byte 0x78). Decompressing this ZLIB stream reveals another OLE file. Which in turn contains an embedded OLE object that turns out to be a VBS script:
And the base64 string in this VBS script is a PowerShell command:
If you are interested to see how you can analyze this sample with oledump, you can take a look at this video I produced.
Keywords:
0 comment(s)
×
Diary Archives
Comments
www
Nov 17th 2022
4 months ago
EEW
Nov 17th 2022
4 months ago
qwq
Nov 17th 2022
4 months ago
mashood
Nov 17th 2022
4 months ago
isc.sans.edu
Nov 23rd 2022
3 months ago
isc.sans.edu
Nov 23rd 2022
3 months ago
isc.sans.edu
Dec 3rd 2022
3 months ago
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. 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
isc.sans.edu
Dec 26th 2022
2 months ago