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Equation Group hack tool leaked by ShadowBrokers- file smash

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: 2026-06-07T23:00:00Z · Confidence: medium

Hunt Hypothesis

The hunt hypothesis detects potential adversary use of the Equation Group hack tool, which was leaked by ShadowBrokers, to execute malicious file operations. SOC teams should proactively hunt for this behavior in Azure Sentinel to identify and mitigate advanced persistent threat activity that may leverage outdated but highly effective exploitation tools.

YARA Rule

rule EquationGroup_smash {
   meta:
      description = "Equation Group hack tool leaked by ShadowBrokers- file smash"
      author = "Florian Roth"
      reference = "https://medium.com/@shadowbrokerss/dont-forget-your-base-867d304a94b1"
      date = "2017-04-08"
      hash1 = "1dc94b46aaff06d65a3bf724c8701e5f095c1c9c131b65b2f667e11b1f0129a6"
   strings:
      $x1 = "T=<target IP> [O=<port>] Y=<target type>" fullword ascii
      $x2 = "no command given!! bailing..." fullword ascii
      $x3 = "no port. assuming 22..." fullword ascii
   condition:
      filesize < 250KB and 1 of them
}

Deployment Notes

This YARA rule can be deployed in the following contexts:

This rule contains 3 string patterns in its detection logic.

References

False Positive Guidance

Original source: https://github.com/Yara-Rules/rules/blob/main/malware/APT_eqgrp_apr17.yar