Environment
- Carbon Black Cloud Console: All Versions
- Audit and Remediation (was CB LiveOps)
- Endpoint Standard (was CB Defense)
- Enterprise EDR (was CB ThreatHunter)
- Managed Detection (was CB ThreatSight)
- Microsoft Windows: All Supported Versions
- Apple macOS: All Supported Versions
Question
What does it mean when the hash for an application shows as a long chain of zeroes/0s, or when this message is seen for an Event?
Origin: The file with hash 0000000000000000000000000000000000000000000000000000000000000000 was detected by Confer
Answer
An all zero hash indicates a System process or thread running within the kernel level of the Operating System (OS), and there is not an actual file to be hashed. This will typically show when a System process/thread is performing some work either on the endpoint or over the network.
Additional Notes
- Blacklisting or otherwise blocking such a hash will have a negative impact on normal Operating System functionality, and should not be done
- A hash of all zeroes can also be called a synthetic hash
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