win_acridrain_auto

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

Detects win.acridrain.

rule win_acridrain_auto {

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

    


    strings:
        $sequence_0 = { ffb744010000 56 e8???????? 83c408 85f6 740a 0fb64718 }
                                                                                                
        $sequence_1 = { 83c42c 85ff 0f85bf030000 3945f4 758e eb24 56 }
                                                                                                
        $sequence_2 = { 8b4714 0306 8945e4 e9???????? 57 6a00 ff77e0 }
                                                                                                
        $sequence_3 = { eb58 8b750c 8d047f 8d14c6 81cb00100400 c742e807000000 eb40 }
                                                                                                
        $sequence_4 = { ff742418 e8???????? 57 e8???????? 83c410 8bf0 5e }
                                                                                                
        $sequence_5 = { eb28 8b750c 8d047f 8d14c6 81cb00100800 c742e807000000 eb10 }
                                                                                                
        $sequence_6 = { ff7010 56 53 e8???????? 8b8dd8fdffff 83c40c 8a11 }
                                                                                                
        $sequence_7 = { ff7208 6a00 56 6a00 6a61 53 e8???????? }
                                                                                                
        $sequence_8 = { ff731c 8b4724 ff7310 ff7728 ffd0 83c410 85c0 }
                                                                                                
        $sequence_9 = { ffb3a0000000 8b08 ff75f0 50 8b410c ffd0 83c414 }
                                                                                                
    condition:
        7 of them and filesize < 2244608
}

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

e5efa5b2-2d71-45c9-a867-3db28b6f1dd3

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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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