rule win_telb_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.telb."
        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.telb"
        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 = { b9???????? e8???????? 8b7c241c 8b742414 47 897c241c }
            // n = 6, score = 200
            //   b9????????           |                     
            //   e8????????           |                     
            //   8b7c241c             | mov                 edi, dword ptr [esp + 0x1c]
            //   8b742414             | mov                 esi, dword ptr [esp + 0x14]
            //   47                   | inc                 edi
            //   897c241c             | mov                 dword ptr [esp + 0x1c], edi

        $sequence_1 = { e8???????? 8b442414 c744244000000000 c744244407000000 }
            // n = 4, score = 200
            //   e8????????           |                     
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   c744244000000000     | mov                 dword ptr [esp + 0x40], 0
            //   c744244407000000     | mov                 dword ptr [esp + 0x44], 7

        $sequence_2 = { 8984247c140000 803d????????00 0f84fe000000 833d????????00 0f85f1000000 6a09 33c0 }
            // n = 7, score = 200
            //   8984247c140000       | mov                 dword ptr [esp + 0x147c], eax
            //   803d????????00       |                     
            //   0f84fe000000         | je                  0x104
            //   833d????????00       |                     
            //   0f85f1000000         | jne                 0xf7
            //   6a09                 | push                9
            //   33c0                 | xor                 eax, eax

        $sequence_3 = { 6a14 68???????? 8d8dc8eeffff e8???????? }
            // n = 4, score = 200
            //   6a14                 | push                0x14
            //   68????????           |                     
            //   8d8dc8eeffff         | lea                 ecx, [ebp - 0x1138]
            //   e8????????           |                     

        $sequence_4 = { eb3f 6a1f 33c0 c744244400000000 68???????? 8d4c2438 }
            // n = 6, score = 200
            //   eb3f                 | jmp                 0x41
            //   6a1f                 | push                0x1f
            //   33c0                 | xor                 eax, eax
            //   c744244400000000     | mov                 dword ptr [esp + 0x44], 0
            //   68????????           |                     
            //   8d4c2438             | lea                 ecx, [esp + 0x38]

        $sequence_5 = { 0f859a000000 eb3f 6a1f 33c0 c744244400000000 68???????? 8d4c2438 }
            // n = 7, score = 200
            //   0f859a000000         | jne                 0xa0
            //   eb3f                 | jmp                 0x41
            //   6a1f                 | push                0x1f
            //   33c0                 | xor                 eax, eax
            //   c744244400000000     | mov                 dword ptr [esp + 0x44], 0
            //   68????????           |                     
            //   8d4c2438             | lea                 ecx, [esp + 0x38]

        $sequence_6 = { 668985a8dfffff 8d8598dfffff 50 c7859cdfffff03000000 c785a4dfffff64a14100 }
            // n = 5, score = 200
            //   668985a8dfffff       | mov                 word ptr [ebp - 0x2058], ax
            //   8d8598dfffff         | lea                 eax, [ebp - 0x2068]
            //   50                   | push                eax
            //   c7859cdfffff03000000     | mov    dword ptr [ebp - 0x2064], 3
            //   c785a4dfffff64a14100     | mov    dword ptr [ebp - 0x205c], 0x41a164

        $sequence_7 = { e8???????? 8b95e0efffff 8d85c8eeffff 81cf01080000 8d8dd0efffff }
            // n = 5, score = 200
            //   e8????????           |                     
            //   8b95e0efffff         | mov                 edx, dword ptr [ebp - 0x1020]
            //   8d85c8eeffff         | lea                 eax, [ebp - 0x1138]
            //   81cf01080000         | or                  edi, 0x801
            //   8d8dd0efffff         | lea                 ecx, [ebp - 0x1030]

        $sequence_8 = { 898534eeffff eb06 8bb548eeffff c645fc10 8d8d58efffff 81cf00010000 c78568efffff00000000 }
            // n = 7, score = 200
            //   898534eeffff         | mov                 dword ptr [ebp - 0x11cc], eax
            //   eb06                 | jmp                 8
            //   8bb548eeffff         | mov                 esi, dword ptr [ebp - 0x11b8]
            //   c645fc10             | mov                 byte ptr [ebp - 4], 0x10
            //   8d8d58efffff         | lea                 ecx, [ebp - 0x10a8]
            //   81cf00010000         | or                  edi, 0x100
            //   c78568efffff00000000     | mov    dword ptr [ebp - 0x1098], 0

        $sequence_9 = { ffd7 83c408 8d4c2420 e8???????? 8bd8 85db 7405 }
            // n = 7, score = 200
            //   ffd7                 | call                edi
            //   83c408               | add                 esp, 8
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   85db                 | test                ebx, ebx
            //   7405                 | je                  7

    condition:
        7 of them and filesize < 286720
}