rule win_sdbbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.sdbbot."
        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.sdbbot"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 8955ec 8945e4 85d2 0f8560ffffff 8b5df0 }
            // n = 5, score = 700
            //   8955ec               | mov                 dword ptr [ebp - 0x14], edx
            //   8945e4               | mov                 dword ptr [ebp - 0x1c], eax
            //   85d2                 | test                edx, edx
            //   0f8560ffffff         | jne                 0xffffff66
            //   8b5df0               | mov                 ebx, dword ptr [ebp - 0x10]

        $sequence_1 = { 8945e8 746e 0fb710 4b }
            // n = 4, score = 700
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax
            //   746e                 | je                  0x70
            //   0fb710               | movzx               edx, word ptr [eax]
            //   4b                   | dec                 ebx

        $sequence_2 = { 8b55fc 03f2 8b7f10 03fa 833f00 }
            // n = 5, score = 700
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   03f2                 | add                 esi, edx
            //   8b7f10               | mov                 edi, dword ptr [edi + 0x10]
            //   03fa                 | add                 edi, edx
            //   833f00               | cmp                 dword ptr [edi], 0

        $sequence_3 = { 8b5dfc bf04000000 8b7310 8b463c 8b443078 03c6 }
            // n = 6, score = 700
            //   8b5dfc               | mov                 ebx, dword ptr [ebp - 4]
            //   bf04000000           | mov                 edi, 4
            //   8b7310               | mov                 esi, dword ptr [ebx + 0x10]
            //   8b463c               | mov                 eax, dword ptr [esi + 0x3c]
            //   8b443078             | mov                 eax, dword ptr [eax + esi + 0x78]
            //   03c6                 | add                 eax, esi

        $sequence_4 = { 8b55ec 8b4804 eb03 8b45e4 }
            // n = 4, score = 700
            //   8b55ec               | mov                 edx, dword ptr [ebp - 0x14]
            //   8b4804               | mov                 ecx, dword ptr [eax + 4]
            //   eb03                 | jmp                 5
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]

        $sequence_5 = { 88440fff 83ea01 75f2 0fb77b14 }
            // n = 4, score = 700
            //   88440fff             | mov                 byte ptr [edi + ecx - 1], al
            //   83ea01               | sub                 edx, 1
            //   75f2                 | jne                 0xfffffff4
            //   0fb77b14             | movzx               edi, word ptr [ebx + 0x14]

        $sequence_6 = { 8bfe 2b7b34 8955ec 85d2 0f84ae000000 8b83a0000000 }
            // n = 6, score = 700
            //   8bfe                 | mov                 edi, esi
            //   2b7b34               | sub                 edi, dword ptr [ebx + 0x34]
            //   8955ec               | mov                 dword ptr [ebp - 0x14], edx
            //   85d2                 | test                edx, edx
            //   0f84ae000000         | je                  0xb4
            //   8b83a0000000         | mov                 eax, dword ptr [ebx + 0xa0]

        $sequence_7 = { 03c6 8945dc 8b5820 8b4024 }
            // n = 4, score = 700
            //   03c6                 | add                 eax, esi
            //   8945dc               | mov                 dword ptr [ebp - 0x24], eax
            //   8b5820               | mov                 ebx, dword ptr [eax + 0x20]
            //   8b4024               | mov                 eax, dword ptr [eax + 0x24]

        $sequence_8 = { c3 803d????????00 750c c605????????01 e8???????? }
            // n = 5, score = 400
            //   c3                   | ret                 
            //   803d????????00       |                     
            //   750c                 | jne                 0xe
            //   c605????????01       |                     
            //   e8????????           |                     

        $sequence_9 = { 4903ce 41ffd5 488bf0 4885c0 7474 8b7d10 8b5d00 }
            // n = 7, score = 300
            //   4903ce               | dec                 ecx
            //   41ffd5               | add                 ecx, esi
            //   488bf0               | inc                 ecx
            //   4885c0               | call                ebp
            //   7474                 | dec                 eax
            //   8b7d10               | mov                 esi, eax
            //   8b5d00               | dec                 eax

        $sequence_10 = { ba01000000 498bce ffd3 488b7c2438 488bc3 4883c450 415f }
            // n = 7, score = 300
            //   ba01000000           | lea                 edx, [eax - 8]
            //   498bce               | dec                 ebp
            //   ffd3                 | add                 eax, esi
            //   488b7c2438           | dec                 esp
            //   488bc3               | lea                 ebx, [ebx + 8]
            //   4883c450             | dec                 ecx
            //   415f                 | shr                 edx, 1

        $sequence_11 = { 48894c2408 53 4156 4157 4883ec50 }
            // n = 5, score = 300
            //   48894c2408           | movzx               edx, dx
            //   53                   | mov                 ecx, dword ptr [eax + esi + 0x88]
            //   4156                 | mov                 eax, dword ptr [ecx + esi + 0x10]
            //   4157                 | mov                 ecx, dword ptr [ecx + esi + 0x1c]
            //   4883ec50             | dec                 eax

        $sequence_12 = { 4803c6 eb10 488b17 488bce }
            // n = 4, score = 300
            //   4803c6               | lea                 eax, [ebx + 8]
            //   eb10                 | inc                 esp
            //   488b17               | mov                 eax, dword ptr [ebx]
            //   488bce               | dec                 esp

        $sequence_13 = { 4885f6 740a 4885ed 7405 4885db 750c }
            // n = 6, score = 300
            //   4885f6               | inc                 ecx
            //   740a                 | push                esi
            //   4885ed               | inc                 ecx
            //   7405                 | push                edi
            //   4885db               | dec                 eax
            //   750c                 | sub                 esp, 0x50

        $sequence_14 = { 0fb7d2 8b8c3088000000 8b443110 8b4c311c 482bd0 }
            // n = 5, score = 300
            //   0fb7d2               | dec                 eax
            //   8b8c3088000000       | add                 edi, 8
            //   8b443110             | dec                 eax
            //   8b4c311c             | test                ebx, ebx
            //   482bd0               | dec                 eax

        $sequence_15 = { 448b03 4c8d50f8 4d03c6 4c8d5b08 49d1ea }
            // n = 5, score = 300
            //   448b03               | add                 edx, esi
            //   4c8d50f8             | inc                 ecx
            //   4d03c6               | call                esp
            //   4c8d5b08             | dec                 eax
            //   49d1ea               | mov                 dword ptr [edi], eax

        $sequence_16 = { 4883c202 4903d6 41ffd4 488907 4883c708 4885db 488d4308 }
            // n = 7, score = 300
            //   4883c202             | test                eax, eax
            //   4903d6               | je                  0x76
            //   41ffd4               | mov                 edi, dword ptr [ebp + 0x10]
            //   488907               | mov                 ebx, dword ptr [ebp]
            //   4883c708             | dec                 eax
            //   4885db               | add                 edx, 2
            //   488d4308             | dec                 ecx

    condition:
        7 of them and filesize < 1015808
}