win_floxif_auto

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

Detects win.floxif.

rule win_floxif_auto {

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

    


    strings:
        $sequence_0 = { e8???????? 8d8d2cfeffff e8???????? 8d8d3cfeffff e8???????? 8d4de0 e8???????? }
                                                                                                
        $sequence_1 = { 8d95c8fdffff 52 e8???????? 83c408 8d45ec 50 e8???????? }
                                                                                                
        $sequence_2 = { 837dac14 7e02 eb02 ebd1 6a07 8d4db0 e8???????? }
                                                                                                
        $sequence_3 = { 8b4808 51 8b550c c1e204 8b45f0 8b4808 }
                                                                                    
        $sequence_4 = { e8???????? 8d4de0 e8???????? 8d4d08 e8???????? 8a45b8 8be5 }
                                                                                                
        $sequence_5 = { 8d956cfeffff 52 8d4de0 e8???????? 8d45c4 50 e8???????? }
                                                                                                
        $sequence_6 = { 8b4508 3b450c 741d 8b4d08 51 e8???????? 83c404 }
                                                                                                
        $sequence_7 = { c6856ffcffffd4 c68570fcffffd5 c68571fcffffd5 c68572fcffff88 c68573fcffffc3 c68574fcffffde c68575fcffffc3 }
                                                                                                
        $sequence_8 = { 83e905 894df0 6a04 8d55f0 52 8d45e9 50 }
                                                                                                
        $sequence_9 = { 8b9590fdffff 8b4204 a3???????? 8b4d08 51 ff15???????? c705????????00000000 }
                                                                                                
    condition:
        7 of them and filesize < 352256
}

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

b3505a94-e376-458e-8ece-7f68a8fa4ae5

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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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