win_stilachi_rat_auto

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

Detects win.stilachi_rat.

rule win_stilachi_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.stilachi_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.stilachi_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???????? 488bcd e8???????? 33f6 e9???????? 4c8b4b20 488b0b }
                                                                                                
        $sequence_1 = { ff15???????? b91f9fa753 8bd8 e8???????? 8bcb ffd0 4c8be0 }
                                                                                                
        $sequence_2 = { ff5030 8bd8 85c0 7515 4c396d48 7e0f 498b0424 }
                                                                                                
        $sequence_3 = { e9???????? 488b0b ba00900000 66855114 740a 4883c430 5b }
                                                                                                
        $sequence_4 = { e8???????? 899c24cc000000 eb12 bb02000000 4d8bc7 8bd3 488bcd }
                                                                                                
        $sequence_5 = { e8???????? 488b5580 4533c0 8bc8 41b901000000 85c9 750d }
                                                                                                
        $sequence_6 = { ffc9 7467 ffc9 0f852b040000 488b5e08 488d4548 418bcb }
                                                                                                
        $sequence_7 = { e8???????? ba04000000 488bcd 4c8bf0 e8???????? 488bd6 448bc0 }
                                                                                                
        $sequence_8 = { e8???????? b201 488bcf 488bf0 e8???????? 488bcb 4863f8 }
                                                                                                
        $sequence_9 = { e8???????? 488b4720 4885c0 7447 833800 458bee 7e38 }
                                                                                                
    condition:
        7 of them and filesize < 2629632
}

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

0c0c8097-e756-429e-a194-a28f0a5e1b20

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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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