rule win_telb_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { c7859cefffff07000000 e8???????? 83bd84efffff08 8d8570efffff 56 0f438570efffff 8d8d88efffff }
            // n = 7, score = 200
            //   c7859cefffff07000000     | mov    dword ptr [ebp - 0x1064], 7
            //   e8????????           |                     
            //   83bd84efffff08       | cmp                 dword ptr [ebp - 0x107c], 8
            //   8d8570efffff         | lea                 eax, [ebp - 0x1090]
            //   56                   | push                esi
            //   0f438570efffff       | cmovae              eax, dword ptr [ebp - 0x1090]
            //   8d8d88efffff         | lea                 ecx, [ebp - 0x1078]

        $sequence_1 = { 8d8c24a0000000 e8???????? 8b3d???????? 8d4c2430 e8???????? eb2f 68???????? }
            // n = 7, score = 200
            //   8d8c24a0000000       | lea                 ecx, [esp + 0xa0]
            //   e8????????           |                     
            //   8b3d????????         |                     
            //   8d4c2430             | lea                 ecx, [esp + 0x30]
            //   e8????????           |                     
            //   eb2f                 | jmp                 0x31
            //   68????????           |                     

        $sequence_2 = { 50 8d458c eb3f 0fb600 0fbe8858d74100 41 }
            // n = 6, score = 200
            //   50                   | push                eax
            //   8d458c               | lea                 eax, [ebp - 0x74]
            //   eb3f                 | jmp                 0x41
            //   0fb600               | movzx               eax, byte ptr [eax]
            //   0fbe8858d74100       | movsx               ecx, byte ptr [eax + 0x41d758]
            //   41                   | inc                 ecx

        $sequence_3 = { 8d442430 8b3d???????? 0f43442430 6a01 6a00 50 68???????? }
            // n = 7, score = 200
            //   8d442430             | lea                 eax, [esp + 0x30]
            //   8b3d????????         |                     
            //   0f43442430           | cmovae              eax, dword ptr [esp + 0x30]
            //   6a01                 | push                1
            //   6a00                 | push                0
            //   50                   | push                eax
            //   68????????           |                     

        $sequence_4 = { 8d8d40efffff e8???????? c645fc18 8d8d40efffff }
            // n = 4, score = 200
            //   8d8d40efffff         | lea                 ecx, [ebp - 0x10c0]
            //   e8????????           |                     
            //   c645fc18             | mov                 byte ptr [ebp - 4], 0x18
            //   8d8d40efffff         | lea                 ecx, [ebp - 0x10c0]

        $sequence_5 = { 68???????? 8bc8 c645fc1e e8???????? c785e0efffff00000000 33c9 }
            // n = 6, score = 200
            //   68????????           |                     
            //   8bc8                 | mov                 ecx, eax
            //   c645fc1e             | mov                 byte ptr [ebp - 4], 0x1e
            //   e8????????           |                     
            //   c785e0efffff00000000     | mov    dword ptr [ebp - 0x1020], 0
            //   33c9                 | xor                 ecx, ecx

        $sequence_6 = { 7202 8b00 51 50 e8???????? 83c408 8d4c2460 }
            // n = 7, score = 200
            //   7202                 | jb                  4
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   51                   | push                ecx
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8d4c2460             | lea                 ecx, [esp + 0x60]

        $sequence_7 = { c745e404954100 8b4508 8bcf 8b7510 c745e001000000 dd00 }
            // n = 6, score = 200
            //   c745e404954100       | mov                 dword ptr [ebp - 0x1c], 0x419504
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8bcf                 | mov                 ecx, edi
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   c745e001000000       | mov                 dword ptr [ebp - 0x20], 1
            //   dd00                 | fld                 qword ptr [eax]

        $sequence_8 = { 83c9ff c7859cefffff07000000 83f8ff 0faee8 0f42c8 c78514eeffffffffffff 83bd48eeffff08 }
            // n = 7, score = 200
            //   83c9ff               | or                  ecx, 0xffffffff
            //   c7859cefffff07000000     | mov    dword ptr [ebp - 0x1064], 7
            //   83f8ff               | cmp                 eax, -1
            //   0faee8               | lfence              
            //   0f42c8               | cmovb               ecx, eax
            //   c78514eeffffffffffff     | mov    dword ptr [ebp - 0x11ec], 0xffffffff
            //   83bd48eeffff08       | cmp                 dword ptr [ebp - 0x11b8], 8

        $sequence_9 = { 83c223 2bc1 83c0fc 83f81f 0f8796150000 52 51 }
            // n = 7, score = 200
            //   83c223               | add                 edx, 0x23
            //   2bc1                 | sub                 eax, ecx
            //   83c0fc               | add                 eax, -4
            //   83f81f               | cmp                 eax, 0x1f
            //   0f8796150000         | ja                  0x159c
            //   52                   | push                edx
            //   51                   | push                ecx

    condition:
        7 of them and filesize < 286720
}