win_santa_stealer_auto

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

Detects win.santa_stealer.

rule win_santa_stealer_auto {

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

    


    strings:
        $sequence_0 = { 4c29e8 0fb6fc 4863d0 4989ff 89c7 4139c1 0f8ca5f8ffff }
                                                                                                
        $sequence_1 = { e8???????? 488b0f 4885c9 75f3 8b4320 394328 0f82d6000000 }
                                                                                                
        $sequence_2 = { e9???????? 8b5328 85d2 7ebc 488b4320 4863ca 48c1e105 }
                                                                                                
        $sequence_3 = { c3 8d4601 668903 0fb7c6 48c1e604 66897c3312 48c1e004 }
                                                                                                
        $sequence_4 = { 803806 772e 4c8b4748 4d85c0 7417 488d15c79bf8ff 4889f1 }
                                                                                                
        $sequence_5 = { e8???????? 8b8424cc000000 85c0 0f85720b0000 488b8424b8000000 458b4730 4889f1 }
                                                                                                
        $sequence_6 = { e8???????? 4885c0 7434 488b4d10 660fefc0 48639124020000 48c744d02000000000 }
                                                                                                
        $sequence_7 = { e8???????? 4885c0 0f843a040000 41c78424900d000001000000 4889f1 e8???????? 4981c700020000 }
                                                                                                
        $sequence_8 = { c744242804000000 4531c9 31d2 4889d9 48c744242000000000 4c8d842490000000 e8???????? }
                                                                                                
        $sequence_9 = { f6401260 74d7 0fb74010 6685c0 0f84c2080000 807e3f00 0f85b8080000 }
                                                                                                
    condition:
        7 of them and filesize < 27009024
}

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

dc35309b-c7b4-4bc3-ae7c-0702f56ab666

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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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