rule win_shareip_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.shareip."
        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.shareip"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 8b7c2428 57 8d44243c 50 e8???????? 8b0e 8b842474010000 }
            // n = 7, score = 100
            //   8b7c2428             | mov                 edi, dword ptr [esp + 0x28]
            //   57                   | push                edi
            //   8d44243c             | lea                 eax, [esp + 0x3c]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b0e                 | mov                 ecx, dword ptr [esi]
            //   8b842474010000       | mov                 eax, dword ptr [esp + 0x174]

        $sequence_1 = { 33c4 50 8d842444020000 64a300000000 8b842454020000 68???????? 89442424 }
            // n = 7, score = 100
            //   33c4                 | xor                 eax, esp
            //   50                   | push                eax
            //   8d842444020000       | lea                 eax, [esp + 0x244]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8b842454020000       | mov                 eax, dword ptr [esp + 0x254]
            //   68????????           |                     
            //   89442424             | mov                 dword ptr [esp + 0x24], eax

        $sequence_2 = { 6800080000 8d84249c010000 6a01 50 }
            // n = 4, score = 100
            //   6800080000           | push                0x800
            //   8d84249c010000       | lea                 eax, [esp + 0x19c]
            //   6a01                 | push                1
            //   50                   | push                eax

        $sequence_3 = { 59 5e 83c40c c20400 807b0203 751b 8b4318 }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   5e                   | pop                 esi
            //   83c40c               | add                 esp, 0xc
            //   c20400               | ret                 4
            //   807b0203             | cmp                 byte ptr [ebx + 2], 3
            //   751b                 | jne                 0x1d
            //   8b4318               | mov                 eax, dword ptr [ebx + 0x18]

        $sequence_4 = { 5d c3 6a60 b8???????? e8???????? 8b4508 8b751c }
            // n = 7, score = 100
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   6a60                 | push                0x60
            //   b8????????           |                     
            //   e8????????           |                     
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b751c               | mov                 esi, dword ptr [ebp + 0x1c]

        $sequence_5 = { c1fa04 8bc2 c1e81f 03c2 83f803 0f85dff9ffff 8d78ff }
            // n = 7, score = 100
            //   c1fa04               | sar                 edx, 4
            //   8bc2                 | mov                 eax, edx
            //   c1e81f               | shr                 eax, 0x1f
            //   03c2                 | add                 eax, edx
            //   83f803               | cmp                 eax, 3
            //   0f85dff9ffff         | jne                 0xfffff9e5
            //   8d78ff               | lea                 edi, [eax - 1]

        $sequence_6 = { 83c418 295d30 8b5d30 894d10 }
            // n = 4, score = 100
            //   83c418               | add                 esp, 0x18
            //   295d30               | sub                 dword ptr [ebp + 0x30], ebx
            //   8b5d30               | mov                 ebx, dword ptr [ebp + 0x30]
            //   894d10               | mov                 dword ptr [ebp + 0x10], ecx

        $sequence_7 = { b940000000 8b842498000000 8bd1 c1e902 8bf0 8d7c2410 }
            // n = 6, score = 100
            //   b940000000           | mov                 ecx, 0x40
            //   8b842498000000       | mov                 eax, dword ptr [esp + 0x98]
            //   8bd1                 | mov                 edx, ecx
            //   c1e902               | shr                 ecx, 2
            //   8bf0                 | mov                 esi, eax
            //   8d7c2410             | lea                 edi, [esp + 0x10]

        $sequence_8 = { 731f 8b06 57 50 e8???????? 83c408 85c0 }
            // n = 7, score = 100
            //   731f                 | jae                 0x21
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   57                   | push                edi
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax

        $sequence_9 = { 8d8c24b0000000 c68424e801000004 e8???????? 83f8ff 756c 8b8424c0000000 53 }
            // n = 7, score = 100
            //   8d8c24b0000000       | lea                 ecx, [esp + 0xb0]
            //   c68424e801000004     | mov                 byte ptr [esp + 0x1e8], 4
            //   e8????????           |                     
            //   83f8ff               | cmp                 eax, -1
            //   756c                 | jne                 0x6e
            //   8b8424c0000000       | mov                 eax, dword ptr [esp + 0xc0]
            //   53                   | push                ebx

    condition:
        7 of them and filesize < 811008
}