win_campoloader_auto

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

Detects win.campoloader.

rule win_campoloader_auto {

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

    


    strings:
        $sequence_0 = { 898d7cefffff 8b957cefffff 83c201 89954cefffff 8b857cefffff }
                                                                        
        $sequence_1 = { 8d8d30f1ffff 51 e8???????? 83c404 89856cefffff }
                                                                        
        $sequence_2 = { 8b510c 8b0410 8b08 898d24f1ffff 6a10 }
                                                                        
        $sequence_3 = { 83c40c 8d8d54efffff 51 8d95ecfdffff 52 8d85f0feffff }
                                                                                    
        $sequence_4 = { 83c001 898560efffff 8b8d80efffff 8a11 88958befffff 838580efffff01 }
                                                                                    
        $sequence_5 = { c745f8ffffffff 8b45e8 50 8b4d08 51 }
                                                                        
        $sequence_6 = { 83c418 8d8d90efffff 51 6802010000 }
                                                            
        $sequence_7 = { 52 ff15???????? a3???????? 68???????? 8b45f8 }
                                                                        
        $sequence_8 = { 8945fc a1???????? 8945f4 8a0d???????? 884df8 }
                                                                        
        $sequence_9 = { 51 e8???????? 83c410 8d55f4 899580efffff 8b8580efffff }
                                                                                    
    condition:
        7 of them and filesize < 66560
}

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

c54a115e-7a65-4c78-8f7d-5daac70621b7

Propose edits, view related rules, and engage with the community through comments.

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 ]]

Community Discussion