SMB: User password brute force

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SMB: User password brute force

L1 Bithead

We have been seeing SMB: User Password Brute Force Attempt threats coming into our logs.  We are not seeing a UN accompanied with the the traffic and the are using port 445.  This just popped up recently and we are not seeing anything malicious on the client or the DC which is being reached out to.  We are trying to identify what might be causing this and are curious if anyone else is seeing this.

1 REPLY 1

L3 Networker

Hello,

 

Checking server security logs can be helpful.

To investigate further enabling extended packet capture on ip profile may be helpful.

*Sometimes also i am seeing this event on logs and considering it as false positive.

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