rule win_shareip_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { c1fa03 8bca c1e91f 03ca 8b7710 8bd6 2bd3 }
            // n = 7, score = 100
            //   c1fa03               | sar                 edx, 3
            //   8bca                 | mov                 ecx, edx
            //   c1e91f               | shr                 ecx, 0x1f
            //   03ca                 | add                 ecx, edx
            //   8b7710               | mov                 esi, dword ptr [edi + 0x10]
            //   8bd6                 | mov                 edx, esi
            //   2bd3                 | sub                 edx, ebx

        $sequence_1 = { e9???????? 8d85d4fdffff e9???????? 8d8d68feffff e9???????? }
            // n = 5, score = 100
            //   e9????????           |                     
            //   8d85d4fdffff         | lea                 eax, [ebp - 0x22c]
            //   e9????????           |                     
            //   8d8d68feffff         | lea                 ecx, [ebp - 0x198]
            //   e9????????           |                     

        $sequence_2 = { 57 a1???????? 33c4 50 8d842498210000 64a300000000 8b8424ac210000 }
            // n = 7, score = 100
            //   57                   | push                edi
            //   a1????????           |                     
            //   33c4                 | xor                 eax, esp
            //   50                   | push                eax
            //   8d842498210000       | lea                 eax, [esp + 0x2198]
            //   64a300000000         | mov                 dword ptr fs:[0], eax
            //   8b8424ac210000       | mov                 eax, dword ptr [esp + 0x21ac]

        $sequence_3 = { 8d8424fc000000 50 8bce c684248c01000002 e8???????? 85c0 7443 }
            // n = 7, score = 100
            //   8d8424fc000000       | lea                 eax, [esp + 0xfc]
            //   50                   | push                eax
            //   8bce                 | mov                 ecx, esi
            //   c684248c01000002     | mov                 byte ptr [esp + 0x18c], 2
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7443                 | je                  0x45

        $sequence_4 = { 7208 8b4130 668b4002 c3 c741140b000000 }
            // n = 5, score = 100
            //   7208                 | jb                  0xa
            //   8b4130               | mov                 eax, dword ptr [ecx + 0x30]
            //   668b4002             | mov                 ax, word ptr [eax + 2]
            //   c3                   | ret                 
            //   c741140b000000       | mov                 dword ptr [ecx + 0x14], 0xb

        $sequence_5 = { e8???????? 83c404 84c0 0f8462010000 6a00 e8???????? 83c404 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   84c0                 | test                al, al
            //   0f8462010000         | je                  0x168
            //   6a00                 | push                0
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_6 = { 8b35???????? ffd6 8b542414 52 ffd6 8b442410 3d12030900 }
            // n = 7, score = 100
            //   8b35????????         |                     
            //   ffd6                 | call                esi
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]
            //   52                   | push                edx
            //   ffd6                 | call                esi
            //   8b442410             | mov                 eax, dword ptr [esp + 0x10]
            //   3d12030900           | cmp                 eax, 0x90312

        $sequence_7 = { 51 8bce c684248000000001 e8???????? 56 8d442410 }
            // n = 6, score = 100
            //   51                   | push                ecx
            //   8bce                 | mov                 ecx, esi
            //   c684248000000001     | mov                 byte ptr [esp + 0x80], 1
            //   e8????????           |                     
            //   56                   | push                esi
            //   8d442410             | lea                 eax, [esp + 0x10]

        $sequence_8 = { 0fb75308 83ea18 89561c 8bc6 8b4c2408 64890d00000000 }
            // n = 6, score = 100
            //   0fb75308             | movzx               edx, word ptr [ebx + 8]
            //   83ea18               | sub                 edx, 0x18
            //   89561c               | mov                 dword ptr [esi + 0x1c], edx
            //   8bc6                 | mov                 eax, esi
            //   8b4c2408             | mov                 ecx, dword ptr [esp + 8]
            //   64890d00000000       | mov                 dword ptr fs:[0], ecx

        $sequence_9 = { 8b10 8d4c2464 ffd2 8b842480000000 6a00 e8???????? 8bf0 }
            // n = 7, score = 100
            //   8b10                 | mov                 edx, dword ptr [eax]
            //   8d4c2464             | lea                 ecx, [esp + 0x64]
            //   ffd2                 | call                edx
            //   8b842480000000       | mov                 eax, dword ptr [esp + 0x80]
            //   6a00                 | push                0
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax

    condition:
        7 of them and filesize < 811008
}