rule win_curator_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.curator."
        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.curator"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 4c2bde 488bf7 0f1f4000 66660f1f840000000000 498b0416 483302 49890417 }
            // n = 7, score = 200
            //   4c2bde               | mov                 dword ptr [ebx], eax
            //   488bf7               | mov                 dword ptr [ebx + 0x50], 1
            //   0f1f4000             | mov                 byte ptr [ebx + 0x54], 0
            //   66660f1f840000000000     | dec    eax
            //   498b0416             | mov                 edx, edi
            //   483302               | dec                 eax
            //   49890417             | mov                 ecx, eax

        $sequence_1 = { c3 4055 4883ec20 488bea ba60000000 488b4d48 e8???????? }
            // n = 7, score = 200
            //   c3                   | dec                 eax
            //   4055                 | mov                 dword ptr [ebp + 0x18], esi
            //   4883ec20             | movups              xmm0, xmmword ptr [edi]
            //   488bea               | movups              xmmword ptr [ebp], xmm0
            //   ba60000000           | dec                 esp
            //   488b4d48             | mov                 dword ptr [edi], esi
            //   e8????????           |                     

        $sequence_2 = { 7422 83f903 741d 488b8f88000000 488b97c0000000 488b01 488b4028 }
            // n = 7, score = 200
            //   7422                 | add                 esp, 0x20
            //   83f903               | dec                 eax
            //   741d                 | lea                 ecx, [eax + 8]
            //   488b8f88000000       | movups              xmmword ptr [edx], xmm0
            //   488b97c0000000       | dec                 eax
            //   488b01               | lea                 eax, [0x593d4]
            //   488b4028             | dec                 eax

        $sequence_3 = { 80baf900000000 750c c682f900000001 4c8bd0 eb03 4533d2 4c3bc8 }
            // n = 7, score = 200
            //   80baf900000000       | mov                 ecx, dword ptr [edx + 0x80]
            //   750c                 | dec                 eax
            //   c682f900000001       | lea                 ecx, [edx + 0x40]
            //   4c8bd0               | dec                 eax
            //   eb03                 | lea                 ecx, [edx + 0x90]
            //   4533d2               | inc                 eax
            //   4c3bc8               | push                ebp

        $sequence_4 = { 488b7610 488bce e8???????? 4533c0 4889442440 488d542440 }
            // n = 6, score = 200
            //   488b7610             | add                 eax, 2
            //   488bce               | mov                 dword ptr [ebp + 0x17], ecx
            //   e8????????           |                     
            //   4533c0               | dec                 eax
            //   4889442440           | mov                 eax, dword ptr [ebp + 0x20]
            //   488d542440           | dec                 eax

        $sequence_5 = { 488d156b1a0300 488d4de0 e8???????? cc ff15???????? 0fb7d0 488d4de0 }
            // n = 7, score = 200
            //   488d156b1a0300       | mov                 dword ptr [esi + 0x28], 0
            //   488d4de0             | dec                 eax
            //   e8????????           |                     
            //   cc                   | mov                 dword ptr [eax], ebx
            //   ff15????????         |                     
            //   0fb7d0               | dec                 eax
            //   488d4de0             | mov                 ecx, dword ptr [esi + 0x18]

        $sequence_6 = { 84c0 753b 448aef 40887c2440 48897c2458 4c8b442448 488b542450 }
            // n = 7, score = 200
            //   84c0                 | mov                 dword ptr [ebp - 0x39], 0x68
            //   753b                 | dec                 eax
            //   448aef               | mov                 eax, esi
            //   40887c2440           | mov                 dword ptr [ebp - 0x19], 1
            //   48897c2458           | mov                 dword ptr [ebp + 0x17], 1
            //   4c8b442448           | dec                 eax
            //   488b542450           | inc                 eax

        $sequence_7 = { e8???????? eb46 488d0508250700 4889442470 488d442470 488945a8 488d55b0 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   eb46                 | mov                 dword ptr [esp + 0x20], edi
            //   488d0508250700       | inc                 ecx
            //   4889442470           | call                dword ptr [edx + 0x118]
            //   488d442470           | dec                 ecx
            //   488945a8             | add                 dword ptr [esi + 0x28], edi
            //   488d55b0             | dec                 ebp

        $sequence_8 = { b801000000 874110 85c0 7427 8364244000 488d051aa6feff 4889442448 }
            // n = 7, score = 200
            //   b801000000           | sub                 edx, eax
            //   874110               | mov                 eax, dword ptr [edx - 4]
            //   85c0                 | shr                 eax, cl
            //   7427                 | jmp                 0x42
            //   8364244000           | xor                 eax, eax
            //   488d051aa6feff       | dec                 edx
            //   4889442448           | movsx               eax, byte ptr [ecx + ecx + 0x659d0]

        $sequence_9 = { 488b45e0 488907 894f08 e9???????? 4885d2 7565 8bd8 }
            // n = 7, score = 200
            //   488b45e0             | dec                 eax
            //   488907               | mov                 ecx, ebx
            //   894f08               | dec                 eax
            //   e9????????           |                     
            //   4885d2               | mov                 dword ptr [ebx], eax
            //   7565                 | dec                 eax
            //   8bd8                 | mov                 ecx, ebx

    condition:
        7 of them and filesize < 1265664
}