Excel 4 Emotet Maldoc Analysis using CyberChef
This past week I got this attachment and this time I used CyberChef [3] using the same technique published by Didier [1] last year to do a quick analysis of the file vs using oledump. I checked the SHA256 in virustotal and it showed this file had been submitted for analysis and was identified as Emotet [2].
First I opened the suspicious file as input into CyberChef, next step was to applied Strings followed by Regular Expression and changed the default to URL to see if there was any URLs contained in this file.
Indicators of Compromise
SHA256: df02d16c8a18008411ad1202ff67962b656b4ea88648a1bdcfbd8030bee44381 download.dat
f5ajans[.]com/merthel/vvWRK/
exsite[.]pt/ocmods_meus/Yo7Zn4/
g7[.]dk/blogs/avOxjbUGL/
firestoppers.co[.]za/language/L7bx4/
[1] https://isc.sans.edu/forums/diary/Video+Strings+Analysis+VBA+Excel4+Maldoc/27874/
[2] https://www.virustotal.com/gui/file/df02d16c8a18008411ad1202ff67962b656b4ea88648a1bdcfbd8030bee44381
[3] https://gchq.github.io/CyberChef/
[4] https://otx.alienvault.com/indicator/domain/f5ajans.com
[5] https://otx.alienvault.com/indicator/domain/exsite.pt
[6] https://otx.alienvault.com/indicator/domain/g7.dk
[7] https://otx.alienvault.com/indicator/domain/firestoppers.co.za
-----------
Guy Bruneau IPSS Inc.
My Handler Page
Twitter: GuyBruneau
gbruneau at isc dot sans dot edu
Comments
www
Nov 17th 2022
6 months ago
EEW
Nov 17th 2022
6 months ago
qwq
Nov 17th 2022
6 months ago
mashood
Nov 17th 2022
6 months ago
isc.sans.edu
Nov 23rd 2022
6 months ago
isc.sans.edu
Nov 23rd 2022
6 months ago
isc.sans.edu
Dec 3rd 2022
6 months ago
isc.sans.edu
Dec 3rd 2022
6 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
5 months ago
isc.sans.edu
Dec 26th 2022
5 months ago