win_archer_rat_auto

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

Detects win.archer_rat.

rule win_archer_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.archer_rat."
        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.archer_rat"
        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???????? 84c0 0f84df000000 48c7c0ffffffff 89d9 48d3e8 f6c340 }
                                                                                                
        $sequence_1 = { 7441 48c70201000000 4c897a08 b9e0000000 4889c7 4889de f3a4 }
                                                                                                
        $sequence_2 = { e8???????? 488b4710 48898424c0000000 0f1007 0f298424b0000000 488b8c2450050000 488b942458050000 }
                                                                                                
        $sequence_3 = { 48898d48010000 4883a55001000000 f30f6f8424e0050000 0f108c24f0050000 488b842420030000 0f114810 f30f7f00 }
                                                                                                
        $sequence_4 = { 55 53 4881ec98000000 4c894c2438 4c89c6 4889cf 488b842408010000 }
                                                                                                
        $sequence_5 = { c3 488b442448 8a4c2450 4c8d442430 498900 41884808 488d0571a10b00 }
                                                                                                
        $sequence_6 = { 4883c438 c3 488b442460 4889442420 488d0559f40800 4c8d542437 4c89c1 }
                                                                                                
        $sequence_7 = { e8???????? 83c624 ebad 4489f9 e8???????? 488d8c2480000000 89c2 }
                                                                                                
        $sequence_8 = { 7306 44882408 eb74 4489e2 80e23f 80ca80 4589e0 }
                                                                                                
        $sequence_9 = { e8???????? bb40000000 4883fb43 7719 488d0c1e e8???????? 33043b }
                                                                                                
    condition:
        7 of them and filesize < 2612224
}

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

77a6cb21-29e8-4d0b-905f-1e847b5a5969

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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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