Thread-Log: Virus found

[w.naderer]

Hello,
under our Threat-Log I found some Virus entries. The Attacker is an own PC from another vlan. We want to install windows updates over Ivanti-Patchmanagement with the original windows update service. And now the maschine, which we will patch, will do a virus attack - msiexec.exe and wscript.exe. Palo ID 194147259, Application ms-ds-smbv2...
We scanned both machines with a lot of tools and virus-scanner = nothing found!!!
Can somebody tell me the location of the infected files, which will shown in the thread log?
Have you some Tips for me?
Thank you verry much.

Cu
Wolfgang

[tcasw86]

To confirm this is on the firewall threat log? What was the action taken? If it droped or reset the session then traffic wouldn't have made it through to the host as it was blocked by the firewall.

[mivaldi]

I found that multiple Palo Alto Networks customers have reported this issue.

After investigation, I've concluded these are caused by signature collisions with a signature for malicious sample 7e3bdff41913aadc0f5e1e0cf65a9197a060ad68bd9196d92ee240e0ab702085.

I've submitted a request to fine tune the associated signature, so that it is less likely to produce signature collisions.

The issue should be resolved by Monday COB.

[w.naderer]

Hi,
thanks for your responses 🙂
Did we talk about the same story?! How can I ensure that this virus message is a hoax or not?
At the top some Images about my virus troubles

How can I determine the directory of the affected file?

Thank you

Kind regards

Wolfgang

[mivaldi]

Wolfgang,

Please upgrade to the latest Antivirus package and do let me know if you still see the signature triggering.

I tried to resolved this issue, but the msiexec.exe sample I had to work with was not triggering the signature collision any longer.

If yours continues to trigger after updating Antivirus, please locate the msiexec.exe file that triggers the signature, and share its sha256 hash with me.