win_vshell_auto

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

Detects win.vshell.

rule win_vshell_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.vshell."
        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.vshell"
        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???????? c700b4230000 e8???????? 4889c1 4889df 488d059f3b4f00 488b5c2430 }
                                                                                                
        $sequence_1 = { e9???????? 488b842498000000 0fb65c2436 e8???????? 0fb6442435 488b4c2440 e9???????? }
                                                                                                
        $sequence_2 = { e9???????? 4983f803 755b 4c8d4303 4c39c6 733d 4c898424e0000000 }
                                                                                                
        $sequence_3 = { e8???????? 4889c1 4889df 488d05c1aa4f00 488b5c2430 e8???????? c700d9220000 }
                                                                                                
        $sequence_4 = { e8???????? 66480f7ec0 0f1f440000 e8???????? 4889c3 488d05b1463500 eb29 }
                                                                                                
        $sequence_5 = { eb17 440fb64c3c19 4131f1 44884c1419 4488443c19 4883c002 483d90000000 }
                                                                                                
        $sequence_6 = { c644242f5a 48bad793ed84f6cb493c 488954241e c64424263d 31c0 6690 eb14 }
                                                                                                
        $sequence_7 = { e9???????? 4983f804 7545 4c8d4301 4c39c6 7331 488d0565834400 }
                                                                                                
        $sequence_8 = { e8???????? 90 89442408 48895c2410 0f1f440000 e8???????? 8b442408 }
                                                                                                
        $sequence_9 = { e8???????? 84c0 0f84b7000000 e8???????? 48898424d8000000 48899c2488000000 488d0550f69800 }
                                                                                                
    condition:
        7 of them and filesize < 39452672
}

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

c847b9d8-6701-4682-81fe-5ef1a31866e3

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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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