win_sendsafe_auto

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

Detects win.sendsafe.

rule win_sendsafe_auto {

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

    


    strings:
        $sequence_0 = { e8???????? 8b8c2498000000 53 55 56 8bb4249c000000 33ed }
                                                                                                
        $sequence_1 = { 8b55fc c78234010000ffffffff 8b45fc c7803801000000000000 837d0800 743d 8b4d08 }
                                                                                                
        $sequence_2 = { ffb5e8efffff e8???????? 8b8de0efffff 8bf0 8b85f0efffff 83c410 8b048590945b00 }
                                                                                                
        $sequence_3 = { e8???????? 89a534f6ffff 8b9534f6ffff 8995b0f6ffff eb18 8b85c8f6ffff 50 }
                                                                                                
        $sequence_4 = { 8b55dc 0355f8 8b45f4 8a0c08 880a 8b55f4 83c204 }
                                                                                                
        $sequence_5 = { 8b4dec 83e901 894dec 837dec00 7e13 8b55f4 8a45ff }
                                                                                                
        $sequence_6 = { ff15???????? 33c0 e9???????? 8b951470ffff 83c210 89950070ffff 8b850070ffff }
                                                                                                
        $sequence_7 = { 8b906c010000 3b9170010000 7f0c 8b4508 83b87001000040 7c04 c645ff01 }
                                                                                                
        $sequence_8 = { e8???????? 83c428 c745e000000000 eb09 8b4de0 83c101 894de0 }
                                                                                                
        $sequence_9 = { eb22 8b55fc 8b450c 3b4204 7e09 8b4dfc 8b550c }
                                                                                                
    condition:
        7 of them and filesize < 3743744
}

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

fbcc07a3-c0db-4d6b-8b96-9f62abdfcedd

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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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