rule win_blind_edr_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.blind_edr."
        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.blind_edr"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 4889450f 4c8b5577 488d0549f90000 0f1000 4c8bd9 488d4c2430 }
            // n = 6, score = 100
            //   4889450f             | mov                 edi, dword ptr [esp + 0x30]
            //   4c8b5577             | dec                 esp
            //   488d0549f90000       | mov                 esi, dword ptr [esp + 0x38]
            //   0f1000               | dec                 eax
            //   4c8bd9               | add                 esp, 0x40
            //   488d4c2430           | inc                 ecx

        $sequence_1 = { e8???????? 4885c0 7440 488d0d91140100 }
            // n = 4, score = 100
            //   e8????????           |                     
            //   4885c0               | jmp                 0xfffffff0
            //   7440                 | dec                 ecx
            //   488d0d91140100       | mov                 eax, dword ptr [edi]

        $sequence_2 = { 4533c9 41b808000000 e8???????? 8b4d38 488b45c8 }
            // n = 5, score = 100
            //   4533c9               | xor                 edx, edx
            //   41b808000000         | inc                 ecx
            //   e8????????           |                     
            //   8b4d38               | mov                 esi, 1
            //   488b45c8             | dec                 eax

        $sequence_3 = { 480bc2 4c8bc0 48b82bb11285a95e4eb8 49f7e0 48c1ea1f 480fafd1 }
            // n = 6, score = 100
            //   480bc2               | push                esi
            //   4c8bc0               | dec                 eax
            //   48b82bb11285a95e4eb8     | sub    esp, 0x20
            //   49f7e0               | xor                 esi, esi
            //   48c1ea1f             | inc                 ebp
            //   480fafd1             | xor                 esi, esi

        $sequence_4 = { 4c897c2440 4c8d3c2b 2bdf 8bfb }
            // n = 4, score = 100
            //   4c897c2440           | inc                 edx
            //   4c8d3c2b             | mov                 eax, edx
            //   2bdf                 | dec                 ecx
            //   8bfb                 | cmp                 eax, edx

        $sequence_5 = { 488d4b10 4533c9 41b808000000 488d542448 }
            // n = 4, score = 100
            //   488d4b10             | dec                 eax
            //   4533c9               | mov                 ecx, dword ptr [esp + 0x60]
            //   41b808000000         | dec                 eax
            //   488d542448           | add                 ecx, eax

        $sequence_6 = { e8???????? 488b4da0 488d5540 4881c140010000 4533c9 41b804000000 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b4da0             | je                  0x178
            //   488d5540             | mov                 ecx, 0x18
            //   4881c140010000       | mov                 ecx, ebx
            //   4533c9               | mov                 dword ptr [eax], ebx
            //   41b804000000         | mov                 ebx, eax
            //   e8????????           |                     

        $sequence_7 = { 488d0d1f140100 83e03f 4d8be7 49c1fc06 }
            // n = 4, score = 100
            //   488d0d1f140100       | mov                 dword ptr [ecx + 0x18], eax
            //   83e03f               | dec                 eax
            //   4d8be7               | mov                 dword ptr [eax + 8], edi
            //   49c1fc06             | dec                 eax

        $sequence_8 = { 41b8000000ff 498bcd 48ba00000000ffffffff 498bc5 }
            // n = 4, score = 100
            //   41b8000000ff         | inc                 ebx
            //   498bcd               | inc                 ecx
            //   48ba00000000ffffffff     | cmp    ebx, esp
            //   498bc5               | jb                  0xffffffe6

        $sequence_9 = { 41b808000000 e8???????? 4c39a42480000000 741b 488b542478 }
            // n = 5, score = 100
            //   41b808000000         | mov                 eax, 8
            //   e8????????           |                     
            //   4c39a42480000000     | dec                 eax
            //   741b                 | lea                 edx, [esp + 0x50]
            //   488b542478           | dec                 eax

    condition:
        7 of them and filesize < 299008
}