rule win_scieron_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.scieron."
        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.scieron"
        malpedia_rule_date = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    /* DISCLAIMER
     * The strings used in this rule have been automatically selected from the
     * disassembly of memory dumps and unpacked files, using YARA-Signator.
     * The code and documentation is published here:
     * https://github.com/fxb-cocacoding/yara-signator
     * As Malpedia is used as data source, please note that for a given
     * number of families, only single samples are documented.
     * This likely impacts the degree of generalization these rules will offer.
     * Take the described generation method also into consideration when you
     * apply the rules in your use cases and assign them confidence levels.
     */


    strings:
        $sequence_0 = { ff742418 ff15???????? 85c0 0f8472020000 f686????????10 7415 }
            // n = 6, score = 100
            //   ff742418             | push                dword ptr [esp + 0x18]
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f8472020000         | je                  0x278
            //   f686????????10       |                     
            //   7415                 | je                  0x17

        $sequence_1 = { 55 6a01 6800000080 83c008 50 ff15???????? 8bf8 }
            // n = 7, score = 100
            //   55                   | push                ebp
            //   6a01                 | push                1
            //   6800000080           | push                0x80000000
            //   83c008               | add                 eax, 8
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax

        $sequence_2 = { 57 33ff 397d10 742e }
            // n = 4, score = 100
            //   57                   | push                edi
            //   33ff                 | xor                 edi, edi
            //   397d10               | cmp                 dword ptr [ebp + 0x10], edi
            //   742e                 | je                  0x30

        $sequence_3 = { 685cee0000 8935???????? ff15???????? 68???????? 8d85e0feffff }
            // n = 5, score = 100
            //   685cee0000           | push                0xee5c
            //   8935????????         |                     
            //   ff15????????         |                     
            //   68????????           |                     
            //   8d85e0feffff         | lea                 eax, [ebp - 0x120]

        $sequence_4 = { 817c2410c8000000 756b 33c0 40 5f }
            // n = 5, score = 100
            //   817c2410c8000000     | cmp                 dword ptr [esp + 0x10], 0xc8
            //   756b                 | jne                 0x6d
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax
            //   5f                   | pop                 edi

        $sequence_5 = { 85c0 75b2 57 ff15???????? }
            // n = 4, score = 100
            //   85c0                 | test                eax, eax
            //   75b2                 | jne                 0xffffffb4
            //   57                   | push                edi
            //   ff15????????         |                     

        $sequence_6 = { 6a02 56 6a01 894df4 8b5804 83c008 6800000040 }
            // n = 7, score = 100
            //   6a02                 | push                2
            //   56                   | push                esi
            //   6a01                 | push                1
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8b5804               | mov                 ebx, dword ptr [eax + 4]
            //   83c008               | add                 eax, 8
            //   6800000040           | push                0x40000000

        $sequence_7 = { 8bf0 e8???????? 83c40c 8bf0 eb02 }
            // n = 5, score = 100
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8bf0                 | mov                 esi, eax
            //   eb02                 | jmp                 4

        $sequence_8 = { 3bfe 7419 8d4574 50 57 56 }
            // n = 6, score = 100
            //   3bfe                 | cmp                 edi, esi
            //   7419                 | je                  0x1b
            //   8d4574               | lea                 eax, [ebp + 0x74]
            //   50                   | push                eax
            //   57                   | push                edi
            //   56                   | push                esi

        $sequence_9 = { 8bec 56 8d470c 50 6a40 }
            // n = 5, score = 100
            //   8bec                 | mov                 ebp, esp
            //   56                   | push                esi
            //   8d470c               | lea                 eax, [edi + 0xc]
            //   50                   | push                eax
            //   6a40                 | push                0x40

    condition:
        7 of them and filesize < 100352
}