rule win_tiny_turla_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.tiny_turla."
        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.tiny_turla"
        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 = { 44897e30 895624 85d2 0f851dfdffff 8b4e08 ff15???????? }
            // n = 6, score = 100
            //   44897e30             | lea                 eax, [edx + 0x18]
            //   895624               | mov                 ecx, 0x40
            //   85d2                 | dec                 eax
            //   0f851dfdffff         | mov                 ebx, edx
            //   8b4e08               | inc                 ecx
            //   ff15????????         |                     

        $sequence_1 = { 0f84f8000000 33d2 488d4da0 448d4268 }
            // n = 4, score = 100
            //   0f84f8000000         | lea                 edx, [eax + 1]
            //   33d2                 | je                  0xeb
            //   488d4da0             | inc                 esp
            //   448d4268             | mov                 esi, dword ptr [ebp + 0x67]

        $sequence_2 = { 448d4268 e8???????? 33d2 c745af68000000 488d4d8f }
            // n = 5, score = 100
            //   448d4268             | test                eax, eax
            //   e8????????           |                     
            //   33d2                 | jne                 0xafd
            //   c745af68000000       | dec                 eax
            //   488d4d8f             | mov                 ecx, dword ptr [ebp + 0x30]

        $sequence_3 = { ff15???????? 85c0 0f84b2feffff b801000000 4c8d9c24e0000000 498b5b20 }
            // n = 6, score = 100
            //   ff15????????         |                     
            //   85c0                 | dec                 esp
            //   0f84b2feffff         | mov                 edx, eax
            //   b801000000           | dec                 eax
            //   4c8d9c24e0000000     | test                eax, eax
            //   498b5b20             | je                  0xa48

        $sequence_4 = { 488d4c2450 e8???????? b801000000 488b9c2430010000 4881c4f0000000 415f }
            // n = 6, score = 100
            //   488d4c2450           | dec                 eax
            //   e8????????           |                     
            //   b801000000           | lea                 ecx, [esp + 0x20]
            //   488b9c2430010000     | dec                 eax
            //   4881c4f0000000       | mov                 esi, dword ptr [esp + 0x58]
            //   415f                 | xor                 edi, edi

        $sequence_5 = { 4803cb e8???????? 488b4dd0 4c8d4528 488d1595090000 }
            // n = 5, score = 100
            //   4803cb               | mov                 dword ptr [ebx], ecx
            //   e8????????           |                     
            //   488b4dd0             | lea                 edx, [edi + edi]
            //   4c8d4528             | mov                 ebx, edi
            //   488d1595090000       | dec                 eax

        $sequence_6 = { 66894308 488d5b10 413bfe 72d3 488d5e18 488bcb }
            // n = 6, score = 100
            //   66894308             | inc                 ebp
            //   488d5b10             | xor                 ecx, ecx
            //   413bfe               | dec                 eax
            //   72d3                 | mov                 dword ptr [esp + 0x58], 0xffffffff
            //   488d5e18             | dec                 esp
            //   488bcb               | lea                 eax, [ebp - 0x80]

        $sequence_7 = { 488bcf ff15???????? 48894587 4885c0 0f8486000000 448b7567 41d1ee }
            // n = 7, score = 100
            //   488bcf               | lea                 edx, [0x982]
            //   ff15????????         |                     
            //   48894587             | test                eax, eax
            //   4885c0               | je                  0x975
            //   0f8486000000         | dec                 eax
            //   448b7567             | mov                 ecx, dword ptr [ebp - 0x30]
            //   41d1ee               | dec                 esp

        $sequence_8 = { 488d4dd8 e8???????? 488d4de0 e8???????? 33c0 4883c450 }
            // n = 6, score = 100
            //   488d4dd8             | jne                 0x186
            //   e8????????           |                     
            //   488d4de0             | dec                 eax
            //   e8????????           |                     
            //   33c0                 | lea                 ecx, [esp + 0x50]
            //   4883c450             | inc                 esp

        $sequence_9 = { 4803ca ffe1 488bcf e8???????? 413bc6 7407 }
            // n = 6, score = 100
            //   4803ca               | lea                 eax, [edx + 0x18]
            //   ffe1                 | dec                 eax
            //   488bcf               | lea                 eax, [ebp - 0x71]
            //   e8????????           |                     
            //   413bc6               | dec                 eax
            //   7407                 | lea                 ecx, [ebp - 0x60]

    condition:
        7 of them and filesize < 51200
}