← Back to SOC feed Coverage →

PubSab

yara LOW Yara-Rules
community
This rule was pulled from an open-source repository and enriched with AI. Validate in a test environment before deploying to production.
View original rule at Yara-Rules →
Retrieved: 2026-06-28T23:00:00Z · Confidence: medium

Hunt Hypothesis

This detection identifies anomalous interactions with the PubSub service that may indicate an adversary attempting to establish covert command and control channels or exfiltrate data through message queues. Proactively hunting for these patterns in Azure Sentinel is critical because low-severity PubSub activities often serve as a stealthy precursor to more significant lateral movement, allowing analysts to intervene before the threat escalates.

YARA Rule

rule PubSab : Family
{
    meta:
        description = "PubSab"
        author = "Seth Hardy"
        last_modified = "2014-06-19"
        
    condition:
        PubSabCode or PubSabStrings
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

False Positive Guidance

Here are 4 specific false positive scenarios for the PubSub detection rule in an enterprise environment, including suggested filters and exclusions:

Original source: https://github.com/Yara-Rules/rules/blob/main/malware/MALW_PubSab.yar