win_tarsip_auto

YARA detection rule by Felix Bilstein - yara-signator at cocacoding dot com

Detects win.tarsip.

rule win_tarsip_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.tarsip."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.tarsip"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 8d8424c8010000 83c40c 8d5001 8a08 40 3acb 75f9 }
                                                                                                
        $sequence_1 = { ff15???????? 8b0424 59 c3 83f801 753a 8b8ea0830000 }
                                                                                                
        $sequence_2 = { e8???????? 83c408 c78424bc080000ffffffff 39b42484000000 0f8291020000 8b442470 e9???????? }
                                                                                                
        $sequence_3 = { 51 8d542424 52 ffd6 8d442448 50 }
                                                                                    
        $sequence_4 = { 51 e8???????? 83c404 33c0 e9???????? 8b54242c 8d3c02 }
                                                                                                
        $sequence_5 = { 56 ff15???????? 5b 33c0 5e c3 }
                                                                                    
        $sequence_6 = { b9???????? e8???????? 8bdd e8???????? 33c0 }
                                                                        
        $sequence_7 = { e8???????? 81c468070000 c20800 56 6a01 8d442418 6a04 }
                                                                                                
        $sequence_8 = { ff34c5bc364200 53 57 e8???????? 83c40c 85c0 740d }
                                                                                                
        $sequence_9 = { ebc9 8bc8 c1f905 8d1c8d00704200 8bf8 83e71f }
                                                                                    
    condition:
        7 of them and filesize < 360448
}

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

0a57c57c-beeb-4eca-be61-d6d56e98032d

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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 ]]

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 ]]

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