rule win_turla_rpc_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.turla_rpc."
        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.turla_rpc"
        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 = { 66c7442474303b c644247655 c744246022362636 66c74424643825 c644246655 }
            // n = 5, score = 200
            //   66c7442474303b       | mov                 word ptr [ebp + 0x28], 0x3939
            //   c644247655           | mov                 byte ptr [ebp + 0x2a], 0x55
            //   c744246022362636     | mov                 dword ptr [ebp + 0x70], 0x3b27303e
            //   66c74424643825       | mov                 dword ptr [ebp + 0x74], 0x67663930
            //   c644246655           | mov                 word ptr [esp + 0x74], 0x3b30

        $sequence_1 = { 66c7458c2630 c6458e55 c744245033273034 66c74424543155 }
            // n = 4, score = 200
            //   66c7458c2630         | dec                 eax
            //   c6458e55             | lea                 ecx, [esp + 0x20]
            //   c744245033273034     | inc                 ecx
            //   66c74424543155       | mov                 eax, 1

        $sequence_2 = { f30f7f8d98010000 c785b800000027273a27 c685bc00000055 c685d801000055 f30f7f85b0010000 660f6f05???????? }
            // n = 6, score = 200
            //   f30f7f8d98010000     | mov                 byte ptr [esp + 0x76], 0x55
            //   c785b800000027273a27     | mov    dword ptr [esp + 0x60], 0x36263622
            //   c685bc00000055       | mov                 word ptr [esp + 0x64], 0x2538
            //   c685d801000055       | mov                 byte ptr [esp + 0x66], 0x55
            //   f30f7f85b0010000     | movdqu              xmmword ptr [ebp + 0x198], xmm1
            //   660f6f05????????     |                     

        $sequence_3 = { 66c7850c0100003a3b c6850e01000055 c745c007303431 c745c4133c3930 c645c855 }
            // n = 5, score = 200
            //   66c7850c0100003a3b     | mov    word ptr [ebp + 0x10c], 0x3b3a
            //   c6850e01000055       | mov                 byte ptr [ebp + 0x10e], 0x55
            //   c745c007303431       | mov                 dword ptr [ebp - 0x40], 0x31343007
            //   c745c4133c3930       | mov                 dword ptr [ebp - 0x3c], 0x30393c13
            //   c645c855             | mov                 byte ptr [ebp - 0x38], 0x55

        $sequence_4 = { 660f6f05???????? c6858c00000055 c785e000000012302103 c785e40000003027263c c785e80000003a3b102d f30f7f85e0010000 660f6f05???????? }
            // n = 7, score = 200
            //   660f6f05????????     |                     
            //   c6858c00000055       | mov                 word ptr [ebp - 0x74], 0x3026
            //   c785e000000012302103     | mov    byte ptr [ebp - 0x72], 0x55
            //   c785e40000003027263c     | mov    dword ptr [esp + 0x50], 0x34302733
            //   c785e80000003a3b102d     | mov    word ptr [esp + 0x54], 0x5531
            //   f30f7f85e0010000     | mov                 byte ptr [ebp + 0x8c], 0x55
            //   660f6f05????????     |                     

        $sequence_5 = { 66c745283939 c6452a55 c745703e30273b c7457430396667 }
            // n = 4, score = 200
            //   66c745283939         | mov                 dword ptr [ebp + 0xe0], 0x3213012
            //   c6452a55             | mov                 dword ptr [ebp + 0xe4], 0x3c262730
            //   c745703e30273b       | mov                 dword ptr [ebp + 0xe8], 0x2d103b3a
            //   c7457430396667       | movdqu              xmmword ptr [ebp + 0x1e0], xmm0

        $sequence_6 = { c745b06970746f c745b472536163 66c745b86c00 ff15???????? }
            // n = 4, score = 200
            //   c745b06970746f       | mov                 dword ptr [ebp + 0x84], 0x5253830
            //   c745b472536163       | mov                 dword ptr [ebp + 0x88], 0x23d2134
            //   66c745b86c00         | movdqu              xmmword ptr [ebp + 0x130], xmm0
            //   ff15????????         |                     

        $sequence_7 = { f30f7f85e0010000 660f6f05???????? f30f7f8580010000 660f6f05???????? 66c785ec0000000255 c785a0000000193a3431 c785a4000000193c3727 }
            // n = 7, score = 200
            //   f30f7f85e0010000     | mov                 dword ptr [ebp + 0xb8], 0x273a2727
            //   660f6f05????????     |                     
            //   f30f7f8580010000     | mov                 byte ptr [ebp + 0xbc], 0x55
            //   660f6f05????????     |                     
            //   66c785ec0000000255     | mov    byte ptr [ebp + 0x1d8], 0x55
            //   c785a0000000193a3431     | movdqu    xmmword ptr [ebp + 0x1b0], xmm0
            //   c785a4000000193c3727     | movdqu    xmmword ptr [ebp + 0x1e0], xmm0

        $sequence_8 = { c3 488d053bda0000 488d542458 488d4c2420 41b801000000 }
            // n = 5, score = 200
            //   c3                   | ret                 
            //   488d053bda0000       | dec                 eax
            //   488d542458           | lea                 eax, [0xda3b]
            //   488d4c2420           | dec                 eax
            //   41b801000000         | lea                 edx, [esp + 0x58]

        $sequence_9 = { 85ff 7514 8d45ac 50 ff15???????? }
            // n = 5, score = 100
            //   85ff                 | je                  0x85
            //   7514                 | lea                 eax, [esp + 0x260]
            //   8d45ac               | push                eax
            //   50                   | push                esi
            //   ff15????????         |                     

        $sequence_10 = { 83c414 8d85b8fdffff 50 8d8574fdffff 50 }
            // n = 5, score = 100
            //   83c414               | test                edi, edi
            //   8d85b8fdffff         | jne                 0x18
            //   50                   | lea                 eax, [ebp - 0x54]
            //   8d8574fdffff         | push                eax
            //   50                   | add                 esp, 0x14

        $sequence_11 = { 83feff 741d 6a00 8d45f8 50 }
            // n = 5, score = 100
            //   83feff               | push                eax
            //   741d                 | add                 esp, 4
            //   6a00                 | push                2
            //   8d45f8               | push                0
            //   50                   | cmp                 esi, -1

        $sequence_12 = { 8bf0 85f6 747f 8d842460020000 50 56 ff15???????? }
            // n = 7, score = 100
            //   8bf0                 | mov                 dword ptr [edi], eax
            //   85f6                 | add                 esp, 4
            //   747f                 | push                2
            //   8d842460020000       | push                0
            //   50                   | mov                 esi, eax
            //   56                   | test                esi, esi
            //   ff15????????         |                     

        $sequence_13 = { e8???????? 83c404 6a02 ff15???????? 6a00 }
            // n = 5, score = 100
            //   e8????????           |                     
            //   83c404               | inc                 eax
            //   6a02                 | push                1
            //   ff15????????         |                     
            //   6a00                 | push                eax

        $sequence_14 = { 40 83f80d 72f5 33c0 8d4900 80b40518ffffff55 }
            // n = 6, score = 100
            //   40                   | movdqu              xmmword ptr [ebp + 0x150], xmm0
            //   83f80d               | mov                 dword ptr [ebp - 0x50], 0x6f747069
            //   72f5                 | mov                 dword ptr [ebp - 0x4c], 0x63615372
            //   33c0                 | mov                 word ptr [ebp - 0x48], 0x6c
            //   8d4900               | inc                 eax
            //   80b40518ffffff55     | cmp                 eax, 0xd

        $sequence_15 = { 56 ff15???????? 40 6a01 50 8907 }
            // n = 6, score = 100
            //   56                   | jb                  0xfffffffa
            //   ff15????????         |                     
            //   40                   | xor                 eax, eax
            //   6a01                 | lea                 ecx, [ecx]
            //   50                   | xor                 byte ptr [ebp + eax - 0xe8], 0x55
            //   8907                 | push                esi

    condition:
        7 of them and filesize < 311296
}