win_spygrace_auto

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

Detects win.spygrace.

rule win_spygrace_auto {

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

    


    strings:
        $sequence_0 = { 4c8d0db38f0300 448ac7 488bd1 488d4de7 }
                                                            
        $sequence_1 = { 33c0 e9???????? bdc8000000 488d5964 448bcd 4c8d0505ce0200 }
                                                                                    
        $sequence_2 = { e8???????? 48837df700 742f 41b804000000 488d1543e30200 488bcb e8???????? }
                                                                                                
        $sequence_3 = { 4157 4883ec20 4c8b4110 488bf1 4d85c0 }
                                                                        
        $sequence_4 = { e8???????? 488d4fff bafeffff7f 488bd8 483bca 7738 482bd7 }
                                                                                                
        $sequence_5 = { eb12 4c8d0db1e20300 448ac3 498bd6 e8???????? 488d87c0020000 48396818 }
                                                                                                
        $sequence_6 = { c645d800 488b5618 4883fa10 7228 48ffc2 488b0e }
                                                                                    
        $sequence_7 = { 498bcd e8???????? 4889442448 4885c0 0f8419010000 448beb 488bce }
                                                                                                
        $sequence_8 = { 44897c2420 4c8d4da0 4c8d0537ab0300 ba00010000 488d4db0 e8???????? 41bf01000000 }
                                                                                                
        $sequence_9 = { 4c8bf0 4885c0 0f8433030000 bb40000000 448bc3 33d2 488d4d10 }
                                                                                                
    condition:
        7 of them and filesize < 865280
}

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

e5fe828e-25ce-4af8-b921-7d95e3aad53c

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion