win_poscardstealer_auto

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

Detects win.poscardstealer.

rule win_poscardstealer_auto {

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

    


    strings:
        $sequence_0 = { 50 8d4db8 e8???????? 6a01 6aff b303 }
                                                                                    
        $sequence_1 = { 83e61f 8d3c85e0794200 8b07 c1e606 8a4c3004 f6c101 7514 }
                                                                                                
        $sequence_2 = { e8???????? 83c404 c745e80f000000 c745e400000000 c645d400 c745fcffffffff 3975cc }
                                                                                                
        $sequence_3 = { e8???????? 83c40c 8bfb eb5f 7360 8bc6 2bc7 }
                                                                                                
        $sequence_4 = { 51 8d4dec 8bf8 c7450c30e74100 e8???????? 68???????? 8d55ec }
                                                                                                
        $sequence_5 = { 50 6800100000 8d8df4edffff 51 e8???????? 8b0d???????? 2b0d???????? }
                                                                                                
        $sequence_6 = { 52 c645fc04 e8???????? 8b9544ffffff 8d4dd4 51 50 }
                                                                                                
        $sequence_7 = { 83c404 83c61c 3b35???????? 0f8551ffffff 8d8de8feffff e8???????? }
                                                                                    
        $sequence_8 = { 83e203 83f908 7229 f3a5 ff2495c0b54000 8bc7 }
                                                                                    
        $sequence_9 = { 50 8d45f4 64a300000000 8b4508 33c9 6a3e }
                                                                                    
    condition:
        7 of them and filesize < 362496
}

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

83bbd757-80be-40bd-a9e1-566b8ec68f90

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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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