win_deltastealer_auto

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

Detects win.deltastealer.

rule win_deltastealer_auto {

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

    


    strings:
        $sequence_0 = { 5e c3 488b01 488b4908 488b4918 48f7da 486bd218 }
                                                                                                
        $sequence_1 = { 49833e00 498b4608 740a 488b742450 4889c7 eb07 48894308 }
                                                                                                
        $sequence_2 = { b872000000 4189c7 41b405 8d850000efff 81fd00001100 b903000000 0f43c8 }
                                                                                                
        $sequence_3 = { 7408 4889c1 e8???????? 4885ed 0f95c1 48ff03 eb02 }
                                                                                                
        $sequence_4 = { a810 0f85d9000000 a820 0f8536010000 4c8b19 b827000000 4981fb10270000 }
                                                                                                
        $sequence_5 = { 56 57 55 53 4881ece8010000 4889ce 488b3a }
                                                                                                
        $sequence_6 = { e8???????? 48837c242000 0f84b6000000 0f10442420 0f104c2430 0f294c2450 0f29442440 }
                                                                                                
        $sequence_7 = { 89c1 c1e916 83e13f 418a8c0c00010000 41884e0e 4983ff0f 0f8431060000 }
                                                                                                
        $sequence_8 = { e8???????? 4889c3 488d4c2428 488901 e8???????? 4885db 7421 }
                                                                                                
        $sequence_9 = { 415f c3 4939f0 7309 42803c01c0 7d04 eb13 }
                                                                                                
    condition:
        7 of them and filesize < 3532800
}

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

11f16b41-1b7f-4e94-81ae-f1ac03090ec1

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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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