win_atomsilo_auto

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

Detects win.atomsilo.

rule win_atomsilo_auto {

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

    


    strings:
        $sequence_0 = { 486bd204 4c8b442460 8a0408 41880410 0fb6442438 488d0dac7a0900 488d04c1 }
                                                                                                
        $sequence_1 = { 6666660f1f840000000000 48ffc9 4883e808 498b1400 483b10 7714 }
                                                                                    
        $sequence_2 = { 90 488d05752a0700 488906 488b55f7 4883fa10 7232 48ffc2 }
                                                                                                
        $sequence_3 = { 90 4c8d45b0 488d5580 488d4c2420 e8???????? 90 4d8bc4 }
                                                                                                
        $sequence_4 = { 412bc8 83f901 77e0 8bc8 41b807000000 413bc0 440f47c1 }
                                                                                                
        $sequence_5 = { 488bd1 488bcf e8???????? 488d059ee70700 488907 8b4320 488b5c2430 }
                                                                                                
        $sequence_6 = { e8???????? 4a8d0c6d00000000 4903cd 48c1e104 48034daf 488b5d77 488bd3 }
                                                                                                
        $sequence_7 = { ff15???????? eb0b 498bce ff15???????? 33c0 4c8bac2410140000 4c8ba42408140000 }
                                                                                                
        $sequence_8 = { 0f8eb6030000 83f943 7535 448d41be 488d15a17b0200 488d4de0 e8???????? }
                                                                                                
        $sequence_9 = { 410f47d7 e9???????? 8bc8 85c0 0f84b4feffff 488d04cf 4c2bc7 }
                                                                                                
    condition:
        7 of them and filesize < 1785856
}

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

38811ad0-74d8-4a44-b6bc-c7dda749dcb2

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