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LinuxTsunami

yara LOW Yara-Rules
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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: 2026-06-26T23:00:00Z · Confidence: medium

Hunt Hypothesis

The LinuxTsunami rule detects potential adversary behavior involving rapid, suspicious file creation or modification patterns on Linux systems, which may indicate automated or malicious activity. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate early-stage threats that could escalate into more severe compromises.

YARA Rule

rule LinuxTsunami
{
    meta:
	
		Author      = "@benkow_"
		Date        = "2014/09/12" 
		Description = "Strings inside"
		Reference   = "http://www.kernelmode.info/forum/viewtopic.php?f=16&t=3483"

    strings:
        $a = "PRIVMSG %s :[STD]Hitting %s"
        $b = "NOTICE %s :TSUNAMI <target> <secs>"
        $c = "NOTICE %s :I'm having a problem resolving my host, someone will have to SPOOFS me manually."
    condition:
        $a or $b or $c
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 3 string patterns in its detection logic.

False Positive Guidance

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