win_misfox_auto

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

Detects win.misfox.

rule win_misfox_auto {

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

    


    strings:
        $sequence_0 = { ddd8 db2d???????? b801000000 833d????????00 0f8536510000 }
                                                                        
        $sequence_1 = { 8bf7 8906 8d7604 40 3d00010000 7cf3 c745fc00000000 }
                                                                                                
        $sequence_2 = { 8d44241c 50 6a01 8d442420 50 8d442440 50 }
                                                                                                
        $sequence_3 = { 8b0c8550870110 8b8524e5ffff f644080480 0f8475030000 8b9530e5ffff 33ff 89bd34e5ffff }
                                                                                                
        $sequence_4 = { c3 8bc1 85f6 7409 }
                                                            
        $sequence_5 = { 7f0a b80a000000 5e 8be5 5d c3 53 }
                                                                                                
        $sequence_6 = { ff74241c ffd6 85c0 7560 8b3d???????? }
                                                                        
        $sequence_7 = { 83e908 8d7608 660fd60f 8d7f08 8b048d08410010 }
                                                                        
        $sequence_8 = { 488d4dff ba00020000 c745cb00020000 448975c7 }
                                                            
        $sequence_9 = { e8???????? 8b430c 4c8d6708 894308 8b470c }
                                                                        
        $sequence_10 = { 488bc3 488b5c2430 4883c420 5f c3 488d0d4c6f0100 }
                                                                                    
        $sequence_11 = { 48837d0810 4c0f434df0 488d4d10 48837d2810 480f434d10 8b4500 }
                                                                                    
        $sequence_12 = { eb15 413bc4 753e 0fb65530 0fb64531 }
                                                                        
        $sequence_13 = { 8d41fa 83f801 7774 488b4dbf ff15???????? 83f826 }
                                                                                    
        $sequence_14 = { 488bc3 488bfb 48c1ff05 4c8d3526d20000 83e01f 486bf058 498b04fe }
                                                                                                
        $sequence_15 = { 4833c4 48894547 488d0d615f0100 ff15???????? 488d4def ba00080000 }
                                                                                    
    condition:
        7 of them and filesize < 266240
}

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

9c3738d2-3dfa-440d-a578-eb2acabd49af

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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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