rule win_sslmm_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.sslmm."
        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.sslmm"
        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 = { 50 896c2460 c744245c07000000 895c246c }
            // n = 4, score = 400
            //   50                   | push                eax
            //   896c2460             | mov                 dword ptr [esp + 0x60], ebp
            //   c744245c07000000     | mov                 dword ptr [esp + 0x5c], 7
            //   895c246c             | mov                 dword ptr [esp + 0x6c], ebx

        $sequence_1 = { 85c0 742c 8b442414 8d4e0c 50 51 e8???????? }
            // n = 7, score = 400
            //   85c0                 | test                eax, eax
            //   742c                 | je                  0x2e
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   8d4e0c               | lea                 ecx, [esi + 0xc]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_2 = { 0f84a1000000 33c9 57 894c240c 50 894c2414 894c2418 }
            // n = 7, score = 400
            //   0f84a1000000         | je                  0xa7
            //   33c9                 | xor                 ecx, ecx
            //   57                   | push                edi
            //   894c240c             | mov                 dword ptr [esp + 0xc], ecx
            //   50                   | push                eax
            //   894c2414             | mov                 dword ptr [esp + 0x14], ecx
            //   894c2418             | mov                 dword ptr [esp + 0x18], ecx

        $sequence_3 = { 7527 8b442438 8bc8 2bf8 }
            // n = 4, score = 400
            //   7527                 | jne                 0x29
            //   8b442438             | mov                 eax, dword ptr [esp + 0x38]
            //   8bc8                 | mov                 ecx, eax
            //   2bf8                 | sub                 edi, eax

        $sequence_4 = { 89ac2484000000 89ac2490000000 896c2448 c744244c04000000 ff9358010000 3d18030980 89442428 }
            // n = 7, score = 400
            //   89ac2484000000       | mov                 dword ptr [esp + 0x84], ebp
            //   89ac2490000000       | mov                 dword ptr [esp + 0x90], ebp
            //   896c2448             | mov                 dword ptr [esp + 0x48], ebp
            //   c744244c04000000     | mov                 dword ptr [esp + 0x4c], 4
            //   ff9358010000         | call                dword ptr [ebx + 0x158]
            //   3d18030980           | cmp                 eax, 0x80090318
            //   89442428             | mov                 dword ptr [esp + 0x28], eax

        $sequence_5 = { 52 8b54246c 50 8b44246c 57 }
            // n = 5, score = 400
            //   52                   | push                edx
            //   8b54246c             | mov                 edx, dword ptr [esp + 0x6c]
            //   50                   | push                eax
            //   8b44246c             | mov                 eax, dword ptr [esp + 0x6c]
            //   57                   | push                edi

        $sequence_6 = { f3a4 8b8b6c010000 8bbb68010000 8bd1 8d3428 }
            // n = 5, score = 400
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   8b8b6c010000         | mov                 ecx, dword ptr [ebx + 0x16c]
            //   8bbb68010000         | mov                 edi, dword ptr [ebx + 0x168]
            //   8bd1                 | mov                 edx, ecx
            //   8d3428               | lea                 esi, [eax + ebp]

        $sequence_7 = { 51 89869c000000 e8???????? 8b9790000000 83c408 899690000000 }
            // n = 6, score = 400
            //   51                   | push                ecx
            //   89869c000000         | mov                 dword ptr [esi + 0x9c], eax
            //   e8????????           |                     
            //   8b9790000000         | mov                 edx, dword ptr [edi + 0x90]
            //   83c408               | add                 esp, 8
            //   899690000000         | mov                 dword ptr [esi + 0x90], edx

        $sequence_8 = { 8b8370010000 83c404 3bc5 894c2410 }
            // n = 4, score = 400
            //   8b8370010000         | mov                 eax, dword ptr [ebx + 0x170]
            //   83c404               | add                 esp, 4
            //   3bc5                 | cmp                 eax, ebp
            //   894c2410             | mov                 dword ptr [esp + 0x10], ecx

        $sequence_9 = { 0f8455010000 8b460c 50 6a00 }
            // n = 4, score = 400
            //   0f8455010000         | je                  0x15b
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   50                   | push                eax
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 188416
}