rule win_rhino_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.rhino."
        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.rhino"
        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 = { 0c80 57 88442418 8b4500 56 51 8bcd }
            // n = 7, score = 400
            //   0c80                 | or                  al, 0x80
            //   57                   | push                edi
            //   88442418             | mov                 byte ptr [esp + 0x18], al
            //   8b4500               | mov                 eax, dword ptr [ebp]
            //   56                   | push                esi
            //   51                   | push                ecx
            //   8bcd                 | mov                 ecx, ebp

        $sequence_1 = { 8945fc 8d45d0 50 e8???????? e8???????? c20400 6a00 }
            // n = 7, score = 400
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   8d45d0               | lea                 eax, [ebp - 0x30]
            //   50                   | push                eax
            //   e8????????           |                     
            //   e8????????           |                     
            //   c20400               | ret                 4
            //   6a00                 | push                0

        $sequence_2 = { 7202 8bc1 8b00 c3 8b4c2404 3b4c2408 7413 }
            // n = 7, score = 400
            //   7202                 | jb                  4
            //   8bc1                 | mov                 eax, ecx
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   c3                   | ret                 
            //   8b4c2404             | mov                 ecx, dword ptr [esp + 4]
            //   3b4c2408             | cmp                 ecx, dword ptr [esp + 8]
            //   7413                 | je                  0x15

        $sequence_3 = { 8bc2 f7d8 3bc6 7334 68???????? 8d4dd8 e8???????? }
            // n = 7, score = 400
            //   8bc2                 | mov                 eax, edx
            //   f7d8                 | neg                 eax
            //   3bc6                 | cmp                 eax, esi
            //   7334                 | jae                 0x36
            //   68????????           |                     
            //   8d4dd8               | lea                 ecx, [ebp - 0x28]
            //   e8????????           |                     

        $sequence_4 = { 6a00 68???????? ff75d4 ffd6 ff75d4 ff15???????? 68e8030000 }
            // n = 7, score = 400
            //   6a00                 | push                0
            //   68????????           |                     
            //   ff75d4               | push                dword ptr [ebp - 0x2c]
            //   ffd6                 | call                esi
            //   ff75d4               | push                dword ptr [ebp - 0x2c]
            //   ff15????????         |                     
            //   68e8030000           | push                0x3e8

        $sequence_5 = { 5e c9 c20400 b8???????? e8???????? 81ec94000000 53 }
            // n = 7, score = 400
            //   5e                   | pop                 esi
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   b8????????           |                     
            //   e8????????           |                     
            //   81ec94000000         | sub                 esp, 0x94
            //   53                   | push                ebx

        $sequence_6 = { 8b4b04 194804 8bc6 5e 5b 8be5 }
            // n = 6, score = 400
            //   8b4b04               | mov                 ecx, dword ptr [ebx + 4]
            //   194804               | sbb                 dword ptr [eax + 4], ecx
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp

        $sequence_7 = { 55 56 55 e8???????? 83c430 8bcf c1e105 }
            // n = 7, score = 400
            //   55                   | push                ebp
            //   56                   | push                esi
            //   55                   | push                ebp
            //   e8????????           |                     
            //   83c430               | add                 esp, 0x30
            //   8bcf                 | mov                 ecx, edi
            //   c1e105               | shl                 ecx, 5

        $sequence_8 = { 57 8b4104 8bd0 8b39 2bd7 8b4c2410 8b7104 }
            // n = 7, score = 400
            //   57                   | push                edi
            //   8b4104               | mov                 eax, dword ptr [ecx + 4]
            //   8bd0                 | mov                 edx, eax
            //   8b39                 | mov                 edi, dword ptr [ecx]
            //   2bd7                 | sub                 edx, edi
            //   8b4c2410             | mov                 ecx, dword ptr [esp + 0x10]
            //   8b7104               | mov                 esi, dword ptr [ecx + 4]

        $sequence_9 = { 8b4d08 33c0 83ec40 0f57e4 837d1401 660f6e4110 660f6ec8 }
            // n = 7, score = 400
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   33c0                 | xor                 eax, eax
            //   83ec40               | sub                 esp, 0x40
            //   0f57e4               | xorps               xmm4, xmm4
            //   837d1401             | cmp                 dword ptr [ebp + 0x14], 1
            //   660f6e4110           | movd                xmm0, dword ptr [ecx + 0x10]
            //   660f6ec8             | movd                xmm1, eax

    condition:
        7 of them and filesize < 1288192
}