apt_tealkurma_snappytcp_strings

YARA detection rule by Sekoia.io · GPL-2.0

Detects TealKurma SnappyTCP shell script

rule apt_tealkurma_snappytcp_strings {
  meta:
    id             = "6bbee6d6-f490-4550-bd61-a643f93a8788"
    version        = "1.0"
    description    = "Detects TealKurma SnappyTCP shell script"
    author         = "Sekoia.io"
    creation_date  = "2023-12-08"
    classification = "TLP:CLEAR"

  strings:
    $s1 = "#!/bin/bash" ascii
    $s2 = "2>&1>/dev/null&" ascii
    $s3 = "PATH=$PATH:$PWD;" ascii

  condition:
    $s1 at 0 and $s2 at filesize - 16 and $s3
    and filesize < 300
}

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

fa002b83-b8b2-4dd8-8fc4-92229c015e87

Propose edits, view related rules, and engage with the community through comments.

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 ]]

What does this mean?

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 ]]

Community Discussion