rule win_carbanak_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.carbanak."
        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.carbanak"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 8d4701 50 e8???????? 84c0 7436 8b4d0c }
            // n = 6, score = 200
            //   8d4701               | lea                 eax, [edi + 1]
            //   50                   | push                eax
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7436                 | je                  0x38
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]

        $sequence_1 = { 85f6 7518 8b4dc0 890f 85c9 740f }
            // n = 6, score = 200
            //   85f6                 | test                esi, esi
            //   7518                 | jne                 0x1a
            //   8b4dc0               | mov                 ecx, dword ptr [ebp - 0x40]
            //   890f                 | mov                 dword ptr [edi], ecx
            //   85c9                 | test                ecx, ecx
            //   740f                 | je                  0x11

        $sequence_2 = { eb0f 8d45b4 50 8d45c8 50 e8???????? }
            // n = 6, score = 200
            //   eb0f                 | jmp                 0x11
            //   8d45b4               | lea                 eax, [ebp - 0x4c]
            //   50                   | push                eax
            //   8d45c8               | lea                 eax, [ebp - 0x38]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_3 = { 6a00 8bce e8???????? 53 e8???????? 8dbb28030000 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8dbb28030000         | lea                 edi, [ebx + 0x328]

        $sequence_4 = { e9???????? 85db 0f84f3000000 8d4584 8945f0 6a34 8d45e8 }
            // n = 7, score = 200
            //   e9????????           |                     
            //   85db                 | test                ebx, ebx
            //   0f84f3000000         | je                  0xf9
            //   8d4584               | lea                 eax, [ebp - 0x7c]
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   6a34                 | push                0x34
            //   8d45e8               | lea                 eax, [ebp - 0x18]

        $sequence_5 = { 68???????? ff750c e8???????? 8d45fc 68???????? 50 e8???????? }
            // n = 7, score = 200
            //   68????????           |                     
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   e8????????           |                     
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   68????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_6 = { 0f8ed6010000 8d5330 8d4e50 8955fc 50 e8???????? 8b18 }
            // n = 7, score = 200
            //   0f8ed6010000         | jle                 0x1dc
            //   8d5330               | lea                 edx, [ebx + 0x30]
            //   8d4e50               | lea                 ecx, [esi + 0x50]
            //   8955fc               | mov                 dword ptr [ebp - 4], edx
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b18                 | mov                 ebx, dword ptr [eax]

        $sequence_7 = { 56 56 8d45a8 68???????? 50 e8???????? 83c414 }
            // n = 7, score = 200
            //   56                   | push                esi
            //   56                   | push                esi
            //   8d45a8               | lea                 eax, [ebp - 0x58]
            //   68????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14

        $sequence_8 = { e8???????? 50 ff7508 8945bc 8d45c0 50 e8???????? }
            // n = 7, score = 200
            //   e8????????           |                     
            //   50                   | push                eax
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8945bc               | mov                 dword ptr [ebp - 0x44], eax
            //   8d45c0               | lea                 eax, [ebp - 0x40]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_9 = { 8ad8 e8???????? 83c424 84db 7447 8b7510 56 }
            // n = 7, score = 200
            //   8ad8                 | mov                 bl, al
            //   e8????????           |                     
            //   83c424               | add                 esp, 0x24
            //   84db                 | test                bl, bl
            //   7447                 | je                  0x49
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   56                   | push                esi

    condition:
        7 of them and filesize < 425984
}