SUSP_Scheduled_Task_Java_JAR_Aug25

YARA detection rule by Florian Roth · NOASSERTION

Detects scheduled tasks that execute Java JAR files, which is suspicious but not necessarily malicious

rule SUSP_JAVA_Class_Allatori_Obfuscator_Aug25 {
   meta:
      description = "Detects a relatively small Java class file obfuscated by Allatori Obfuscator"
      author = "Florian Roth"
      reference = "https://www.malwation.com/blog/technical-analysis-of-a-stealth-java-loader-used-in-phishing-campaigns-targeting-turkiye"
      date = "2025-08-07"
      score = 50
      hash1 = "0a7fddd91b332c8daee2c0727b884fc92cfaede02883dbad75f7efc299e884e3"
      id = "d179c944-90c6-5519-8ca2-6450561a31da"
   strings:
      $x1 = "Obfuscation by Allatori Obfuscator" ascii fullword
   condition:
      uint16(0) == 0x4b50
      and filesize < 500KB
      and $x1
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

a444608a-1ee2-4aa6-8343-b0d939c1dd49

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

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Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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