rule win_blackmagic_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.blackmagic."
        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.blackmagic"
        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 = { 488d4d07 e8???????? 488bd8 498d4e08 488d159bd50900 e8???????? 4c8bc0 }
            // n = 7, score = 100
            //   488d4d07             | dec                 esp
            //   e8????????           |                     
            //   488bd8               | mov                 ecx, dword ptr [ebp - 0x69]
            //   498d4e08             | dec                 eax
            //   488d159bd50900       | test                edx, edx
            //   e8????????           |                     
            //   4c8bc0               | je                  0x6ba

        $sequence_1 = { 663928 741d 4c8d0d9a3b0200 4889442420 41b802000000 488bd7 488bce }
            // n = 7, score = 100
            //   663928               | dec                 eax
            //   741d                 | xor                 ecx, esp
            //   4c8d0d9a3b0200       | dec                 esp
            //   4889442420           | lea                 ebx, [esp + 0x1d0]
            //   41b802000000         | dec                 ecx
            //   488bd7               | mov                 ebx, dword ptr [ebx + 0x18]
            //   488bce               | dec                 ecx

        $sequence_2 = { 85c0 7421 4585e4 740e 8bc7 2500070000 }
            // n = 6, score = 100
            //   85c0                 | mov                 dword ptr [esp + 0x38], eax
            //   7421                 | dec                 eax
            //   4585e4               | lea                 edx, [0x9345f]
            //   740e                 | dec                 eax
            //   8bc7                 | lea                 ecx, [esp + 0x38]
            //   2500070000           | int3                

        $sequence_3 = { e8???????? cc e8???????? 488bd0 488d4dd7 e8???????? }
            // n = 6, score = 100
            //   e8????????           |                     
            //   cc                   | dec                 eax
            //   e8????????           |                     
            //   488bd0               | lea                 ecx, [ebp + 0x138]
            //   488d4dd7             | nop                 
            //   e8????????           |                     

        $sequence_4 = { 48ffc3 80380a 753a 483bd9 7435 0fb60b 80f920 }
            // n = 7, score = 100
            //   48ffc3               | dec                 eax
            //   80380a               | mov                 dword ptr [eax + 0x10], ebp
            //   753a                 | dec                 eax
            //   483bd9               | lea                 eax, [0x67283]
            //   7435                 | dec                 eax
            //   0fb60b               | mov                 dword ptr [ebx], eax
            //   80f920               | dec                 eax

        $sequence_5 = { 8079010a 7514 48ffc1 eb0f 0fb601 4a0fbe842840bb0900 4803c8 }
            // n = 7, score = 100
            //   8079010a             | dec                 eax
            //   7514                 | lea                 eax, [0x4a3a6]
            //   48ffc1               | dec                 eax
            //   eb0f                 | mov                 dword ptr [esp + 0x40], eax
            //   0fb601               | dec                 eax
            //   4a0fbe842840bb0900     | lea    eax, [0x4a502]
            //   4803c8               | dec                 eax

        $sequence_6 = { 4c8b0d???????? 488b9780000000 488b01 ff5030 4533ff 488d05e8560400 488d4c2430 }
            // n = 7, score = 100
            //   4c8b0d????????       |                     
            //   488b9780000000       | dec                 ebp
            //   488b01               | mov                 esi, ecx
            //   ff5030               | dec                 eax
            //   4533ff               | mov                 ecx, dword ptr [ecx]
            //   488d05e8560400       | inc                 ecx
            //   488d4c2430           | mov                 ebp, eax

        $sequence_7 = { 4883ec78 488b05???????? 4833c4 488945e8 4c8b4118 488bd9 493bd0 }
            // n = 7, score = 100
            //   4883ec78             | mov                 edx, eax
            //   488b05????????       |                     
            //   4833c4               | dec                 eax
            //   488945e8             | lea                 ecx, [ebp + 0x10]
            //   4c8b4118             | nop                 
            //   488bd9               | dec                 esp
            //   493bd0               | lea                 eax, [0x7ebed]

        $sequence_8 = { 4c3bf0 7413 4983c9ff 4533c0 488d55f7 498bce e8???????? }
            // n = 7, score = 100
            //   4c3bf0               | dec                 eax
            //   7413                 | mov                 dword ptr [ebx + 0x18], edi
            //   4983c9ff             | mov                 esi, 4
            //   4533c0               | dec                 eax
            //   488d55f7             | mov                 edx, dword ptr [esp + 0x28]
            //   498bce               | dec                 eax
            //   e8????????           |                     

        $sequence_9 = { 3b5128 0f84a1000000 48c74424400f000000 48c744243800000000 c644242800 41b846000000 488d15bbdf0700 }
            // n = 7, score = 100
            //   3b5128               | mov                 byte ptr [ebp + 0x38], 0
            //   0f84a1000000         | dec                 eax
            //   48c74424400f000000     | lea    edx, [ebp + 0x168]
            //   48c744243800000000     | dec    eax
            //   c644242800           | lea                 ecx, [ebp + 0x38]
            //   41b846000000         | jne                 0x4ac
            //   488d15bbdf0700       | cmp                 eax, 0x2733

    condition:
        7 of them and filesize < 1416192
}