win_suncrypt_auto

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

Detects win.suncrypt.

rule win_suncrypt_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.suncrypt."
        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.suncrypt"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { 0f28d3 660ffe9530ffffff 660feff2 660f380035???????? 0f28de 660ffe5d90 0f28c3 }
                                                                                                
        $sequence_1 = { 33c0 803d????????01 56 0f95c0 c745d000000000 6800040000 8945cc }
                                                                                                
        $sequence_2 = { 8b9514feffff 8b8560feffff 8b540204 8bca 8d7902 660f1f440000 }
                                                                                    
        $sequence_3 = { 0f1108 83423001 897df8 7506 ff4234 897df8 8b7da0 }
                                                                                                
        $sequence_4 = { 8b8574ffffff 040b 83f061 884583 8b8574ffffff 040c 83f074 }
                                                                                                
        $sequence_5 = { 56 51 e8???????? 83c408 84c0 0f84c2000000 0fb74612 }
                                                                                                
        $sequence_6 = { c6853cffffff37 33c9 c6853dffffff2d c6853effffff64 c6853fffffff7c c68540ffffff7f }
                                                                                    
        $sequence_7 = { ff7510 8b7508 ff750c c6451700 56 e8???????? 83c40c }
                                                                                                
        $sequence_8 = { ff15???????? 5e 5b 57 6a00 ff15???????? 50 }
                                                                                                
        $sequence_9 = { 57 50 e8???????? 83c40c 83473001 7503 }
                                                                                    
    condition:
        7 of them and filesize < 172032
}

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

1fd0b2d7-e67f-4686-9e76-e3a8d80941e0

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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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