MAL_RANSOM_LockBit_ForensicArtifacts_Apr23_1

YARA detection rule by Florian Roth · NOASSERTION

Detects forensic artifacts found in LockBit intrusions

rule MAL_RANSOM_LockBit_ForensicArtifacts_Apr23_1 {
   meta:
      description = "Detects forensic artifacts found in LockBit intrusions"
      author = "Florian Roth"
      reference = "https://objective-see.org/blog/blog_0x75.html"
      date = "2023-04-17"
      score = 75
      id = "e716030c-ee78-51dc-919c-cf59e93da976"
   strings:
      $x1 = "/tmp/locker.log" ascii fullword
      $x2 = "Executable=LockBit/locker_" ascii
      
      $xc1 = { 54 6F 72 20 42 72 6F 77 73 65 72 20 4C 69 6E 6B 73 3A 0D 0A 68 74 74 70 3A 2F 2F 6C 6F 63 6B 62 69 74 }
   condition:
      1 of ($x*)
}

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

e8a12515-169f-4fcf-847e-78889486d7df

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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

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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.

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

[[ currentRule.title ]]

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