rule win_tidepool_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.tidepool."
        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.tidepool"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 5f 5e 5b 8b8d00030000 }
            // n = 4, score = 1000
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8b8d00030000         | mov                 ecx, dword ptr [ebp + 0x300]

        $sequence_1 = { 6a00 50 8b08 ff91a4000000 }
            // n = 4, score = 1000
            //   6a00                 | push                0
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   ff91a4000000         | call                dword ptr [ecx + 0xa4]

        $sequence_2 = { 83c404 8bc6 5e c20400 80790800 c701???????? 740e }
            // n = 7, score = 1000
            //   83c404               | add                 esp, 4
            //   8bc6                 | mov                 eax, esi
            //   5e                   | pop                 esi
            //   c20400               | ret                 4
            //   80790800             | cmp                 byte ptr [ecx + 8], 0
            //   c701????????         |                     
            //   740e                 | je                  0x10

        $sequence_3 = { 8b8d00030000 33cd e8???????? 81c504030000 }
            // n = 4, score = 1000
            //   8b8d00030000         | mov                 ecx, dword ptr [ebp + 0x300]
            //   33cd                 | xor                 ecx, ebp
            //   e8????????           |                     
            //   81c504030000         | add                 ebp, 0x304

        $sequence_4 = { 53 6a02 8bf1 e8???????? }
            // n = 4, score = 900
            //   53                   | push                ebx
            //   6a02                 | push                2
            //   8bf1                 | mov                 esi, ecx
            //   e8????????           |                     

        $sequence_5 = { 2bc8 83e906 51 83c006 50 }
            // n = 5, score = 900
            //   2bc8                 | sub                 ecx, eax
            //   83e906               | sub                 ecx, 6
            //   51                   | push                ecx
            //   83c006               | add                 eax, 6
            //   50                   | push                eax

        $sequence_6 = { 6800000040 8d4500 50 ff15???????? }
            // n = 4, score = 900
            //   6800000040           | push                0x40000000
            //   8d4500               | lea                 eax, dword ptr [ebp]
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_7 = { e8???????? 83c40c 803d????????37 7518 }
            // n = 4, score = 900
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   803d????????37       |                     
            //   7518                 | jne                 0x1a

        $sequence_8 = { 52 50 8b08 ff91f8000000 }
            // n = 4, score = 800
            //   52                   | push                edx
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   ff91f8000000         | call                dword ptr [ecx + 0xf8]

        $sequence_9 = { 75f9 b8???????? b900000400 c60000 40 49 75f9 }
            // n = 7, score = 800
            //   75f9                 | jne                 0xfffffffb
            //   b8????????           |                     
            //   b900000400           | mov                 ecx, 0x40000
            //   c60000               | mov                 byte ptr [eax], 0
            //   40                   | inc                 eax
            //   49                   | dec                 ecx
            //   75f9                 | jne                 0xfffffffb

        $sequence_10 = { 8d5658 52 50 ff91d0000000 33ff 8b4654 }
            // n = 6, score = 800
            //   8d5658               | lea                 edx, dword ptr [esi + 0x58]
            //   52                   | push                edx
            //   50                   | push                eax
            //   ff91d0000000         | call                dword ptr [ecx + 0xd0]
            //   33ff                 | xor                 edi, edi
            //   8b4654               | mov                 eax, dword ptr [esi + 0x54]

        $sequence_11 = { 5b c20400 6a14 68???????? e8???????? 8365fc00 }
            // n = 6, score = 800
            //   5b                   | pop                 ebx
            //   c20400               | ret                 4
            //   6a14                 | push                0x14
            //   68????????           |                     
            //   e8????????           |                     
            //   8365fc00             | and                 dword ptr [ebp - 4], 0

        $sequence_12 = { 6810270000 ff15???????? 8b45ec 8b08 }
            // n = 4, score = 800
            //   6810270000           | push                0x2710
            //   ff15????????         |                     
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_13 = { 83ff14 7509 8b4654 50 8b08 }
            // n = 5, score = 800
            //   83ff14               | cmp                 edi, 0x14
            //   7509                 | jne                 0xb
            //   8b4654               | mov                 eax, dword ptr [esi + 0x54]
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_14 = { e8???????? 68???????? 68???????? 68???????? 8d4500 50 }
            // n = 6, score = 800
            //   e8????????           |                     
            //   68????????           |                     
            //   68????????           |                     
            //   68????????           |                     
            //   8d4500               | lea                 eax, dword ptr [ebp]
            //   50                   | push                eax

        $sequence_15 = { 50 8b08 ff5138 47 }
            // n = 4, score = 800
            //   50                   | push                eax
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   ff5138               | call                dword ptr [ecx + 0x38]
            //   47                   | inc                 edi

        $sequence_16 = { 681f000200 56 68???????? 6801000080 }
            // n = 4, score = 800
            //   681f000200           | push                0x2001f
            //   56                   | push                esi
            //   68????????           |                     
            //   6801000080           | push                0x80000001

        $sequence_17 = { 56 8bf1 e8???????? 8b4654 6a00 50 }
            // n = 6, score = 800
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx
            //   e8????????           |                     
            //   8b4654               | mov                 eax, dword ptr [esi + 0x54]
            //   6a00                 | push                0
            //   50                   | push                eax

        $sequence_18 = { 8b4654 8d9698000000 52 8d5678 }
            // n = 4, score = 800
            //   8b4654               | mov                 eax, dword ptr [esi + 0x54]
            //   8d9698000000         | lea                 edx, dword ptr [esi + 0x98]
            //   52                   | push                edx
            //   8d5678               | lea                 edx, dword ptr [esi + 0x78]

        $sequence_19 = { 8d45ec 50 681f000200 53 }
            // n = 4, score = 800
            //   8d45ec               | lea                 eax, dword ptr [ebp - 0x14]
            //   50                   | push                eax
            //   681f000200           | push                0x2001f
            //   53                   | push                ebx

        $sequence_20 = { e8???????? 8b542414 8d4e01 51 }
            // n = 4, score = 600
            //   e8????????           |                     
            //   8b542414             | mov                 edx, dword ptr [esp + 0x14]
            //   8d4e01               | lea                 ecx, dword ptr [esi + 1]
            //   51                   | push                ecx

        $sequence_21 = { 0fbed2 a4 7706 8a440428 eb02 b03d 8344241803 }
            // n = 7, score = 600
            //   0fbed2               | movsx               edx, dl
            //   a4                   | movsb               byte ptr es:[edi], byte ptr [esi]
            //   7706                 | ja                  8
            //   8a440428             | mov                 al, byte ptr [esp + eax + 0x28]
            //   eb02                 | jmp                 4
            //   b03d                 | mov                 al, 0x3d
            //   8344241803           | add                 dword ptr [esp + 0x18], 3

        $sequence_22 = { ff75ec ff15???????? 8b35???????? 6a04 }
            // n = 4, score = 400
            //   ff75ec               | push                dword ptr [ebp - 0x14]
            //   ff15????????         |                     
            //   8b35????????         |                     
            //   6a04                 | push                4

        $sequence_23 = { 8975ec 8975f0 8975f4 e8???????? 8b07 56 }
            // n = 6, score = 200
            //   8975ec               | mov                 dword ptr [ebp - 0x14], esi
            //   8975f0               | mov                 dword ptr [ebp - 0x10], esi
            //   8975f4               | mov                 dword ptr [ebp - 0xc], esi
            //   e8????????           |                     
            //   8b07                 | mov                 eax, dword ptr [edi]
            //   56                   | push                esi

        $sequence_24 = { b97f410000 33c0 8dbd86f5feff 66899d84f5feff f3ab 53 53 }
            // n = 7, score = 200
            //   b97f410000           | mov                 ecx, 0x417f
            //   33c0                 | xor                 eax, eax
            //   8dbd86f5feff         | lea                 edi, dword ptr [ebp - 0x10a7a]
            //   66899d84f5feff       | mov                 word ptr [ebp - 0x10a7c], bx
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   53                   | push                ebx
            //   53                   | push                ebx

        $sequence_25 = { 895dfc e8???????? ff7508 53 e8???????? 668365ec00 33c0 }
            // n = 7, score = 200
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx
            //   e8????????           |                     
            //   ff7508               | push                dword ptr [ebp + 8]
            //   53                   | push                ebx
            //   e8????????           |                     
            //   668365ec00           | and                 word ptr [ebp - 0x14], 0
            //   33c0                 | xor                 eax, eax

        $sequence_26 = { 50 e8???????? 8d85b8fcffff 57 }
            // n = 4, score = 200
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d85b8fcffff         | lea                 eax, dword ptr [ebp - 0x348]
            //   57                   | push                edi

        $sequence_27 = { c3 0fb6856dfcffff 50 0fb6856cfcffff 50 }
            // n = 5, score = 200
            //   c3                   | ret                 
            //   0fb6856dfcffff       | movzx               eax, byte ptr [ebp - 0x393]
            //   50                   | push                eax
            //   0fb6856cfcffff       | movzx               eax, byte ptr [ebp - 0x394]
            //   50                   | push                eax

        $sequence_28 = { ffd7 83f801 0f8489000000 3bc3 }
            // n = 4, score = 200
            //   ffd7                 | call                edi
            //   83f801               | cmp                 eax, 1
            //   0f8489000000         | je                  0x8f
            //   3bc3                 | cmp                 eax, ebx

    condition:
        7 of them and filesize < 1998848
}