win_whiteblackcrypt_auto

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

Detects win.whiteblackcrypt.

rule win_whiteblackcrypt_auto {

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

    


    strings:
        $sequence_0 = { ffd7 83f804 74d8 ffc3 83fb1a }
                                                                        
        $sequence_1 = { 48897808 ff15???????? 488b05???????? 488d0d84660000 }
                                                            
        $sequence_2 = { 83fb0a 418a4301 41885301 418a5309 41885305 418a530d 4188430d }
                                                                                                
        $sequence_3 = { 4889d9 e8???????? 4401e6 4d63c4 4889f9 4989d9 ba01000000 }
                                                                                                
        $sequence_4 = { 488d0d287a0000 4889c2 488905???????? e8???????? 488d0da8420000 }
                                                                        
        $sequence_5 = { 790d b910270000 ff15???????? ebea e8???????? b805000030 31c9 }
                                                                                                
        $sequence_6 = { 66894306 0fb7442428 66894308 0fb744242a 6689430a }
                                                                        
        $sequence_7 = { ff15???????? 488d542468 4889c1 ff15???????? b902000000 }
                                                                        
        $sequence_8 = { e8???????? 0fb64c243c 89c7 e8???????? 0fb6c8 884c243f e8???????? }
                                                                                                
        $sequence_9 = { 4c01cb 3c5c 7496 3c2f 7492 }
                                                                        
    condition:
        7 of them and filesize < 99328
}

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

624f0edb-71a1-4330-8138-6c04ba3f9726

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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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