win_photofork_auto

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

Detects win.photofork.

rule win_photofork_auto {

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

    


    strings:
        $sequence_0 = { 4d85d2 7515 8d56fc 33c9 41b8fe6a7a69 e8???????? }
                                                                                    
        $sequence_1 = { be01000000 4803f9 493bf7 0f83af000000 0f1f4000 66660f1f840000000000 885c2420 }
                                                                                                
        $sequence_2 = { 4885d2 7515 8d5005 33c9 }
                                                            
        $sequence_3 = { 4803f9 493bf7 0f83af000000 0f1f4000 }
                                                            
        $sequence_4 = { 8b45b0 0fb645ac 84c0 7521 488bcb 0f1f840000000000 8b448db0 }
                                                                                                
        $sequence_5 = { 488d55e8 498bcc e8???????? 4c8bbc2498000000 }
                                                            
        $sequence_6 = { 4d85d2 7515 8d56fc 33c9 41b8fe6a7a69 }
                                                                        
        $sequence_7 = { 4533e4 498bf0 4c8bf9 418bdc 6685c0 741d 4c8bc9 }
                                                                                                
        $sequence_8 = { 488bf8 4885c0 758a e9???????? 85c0 }
                                                                        
        $sequence_9 = { 8d5301 33c9 41b85f70353a e8???????? 4c8bc8 }
                                                                        
    condition:
        7 of them and filesize < 99328
}

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

21dcacb7-22c6-4e8c-8291-f5b843d6e4e6

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