win_akira_auto

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

Detects win.akira.

rule win_akira_auto {

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

    


    strings:
        $sequence_0 = { b990030000 e8???????? 89ac24f8030000 488d8c2410040000 48894c2430 4889742428 48895c2420 }
                                                                                                
        $sequence_1 = { 6690 488d42fe 0fb708 6683f95c 740e 6683f92f 7408 }
                                                                                                
        $sequence_2 = { 4032f6 4084f6 7409 488bcf ff15???????? 488b5c2440 488b6c2448 }
                                                                                                
        $sequence_3 = { 90 66837f0a00 7410 ba90030000 488bcf e8???????? }
                                                                                    
        $sequence_4 = { 4889457f 4885db 743c 660f1f840000000000 488d45bf 4889442420 4c8d4d7f }
                                                                                                
        $sequence_5 = { 8bd8 83f8ff 756f 48897c2440 ff15???????? 65488b0c2558000000 8bf8 }
                                                                                                
        $sequence_6 = { 0f57c0 0f118550020000 0f57c9 660f7f8d60020000 488d458d 4c8bc3 0f1f00 }
                                                                                                
        $sequence_7 = { e8???????? 498d4601 803800 4c0f4ff0 410fb60e 80f97f 0f8553ffffff }
                                                                                                
        $sequence_8 = { 75b4 eb4e 897567 4889757f 4889756f 8b4740 89442420 }
                                                                                                
        $sequence_9 = { 75e8 4983c002 4d3bc3 7429 410fb700 6683f85c 7406 }
                                                                                                
    condition:
        7 of them and filesize < 1286144
}

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

a790786e-342c-4292-baaa-1ede8b10784b

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