rule win_diavol_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.diavol."
        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.diavol"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 8985f0feffff 8985f4feffff 8d85e8feffff 50 ff15???????? }
            // n = 5, score = 100
            //   8985f0feffff         | mov                 dword ptr [ebp - 0x110], eax
            //   8985f4feffff         | mov                 dword ptr [ebp - 0x10c], eax
            //   8d85e8feffff         | lea                 eax, [ebp - 0x118]
            //   50                   | push                eax
            //   ff15????????         |                     

        $sequence_1 = { ff05???????? 83c410 85f6 75bb }
            // n = 4, score = 100
            //   ff05????????         |                     
            //   83c410               | add                 esp, 0x10
            //   85f6                 | test                esi, esi
            //   75bb                 | jne                 0xffffffbd

        $sequence_2 = { 48 75dd eb03 40 }
            // n = 4, score = 100
            //   48                   | dec                 eax
            //   75dd                 | jne                 0xffffffdf
            //   eb03                 | jmp                 5
            //   40                   | inc                 eax

        $sequence_3 = { e8???????? 83c404 85c0 0f854cfeffff 8d8dd0edffff 51 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   85c0                 | test                eax, eax
            //   0f854cfeffff         | jne                 0xfffffe52
            //   8d8dd0edffff         | lea                 ecx, [ebp - 0x1230]
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_4 = { 8b0d???????? 8b15???????? 8908 895004 8d85a4edffff }
            // n = 5, score = 100
            //   8b0d????????         |                     
            //   8b15????????         |                     
            //   8908                 | mov                 dword ptr [eax], ecx
            //   895004               | mov                 dword ptr [eax + 4], edx
            //   8d85a4edffff         | lea                 eax, [ebp - 0x125c]

        $sequence_5 = { 8d85d0edffff 8d9b00000000 668b10 663b11 }
            // n = 4, score = 100
            //   8d85d0edffff         | lea                 eax, [ebp - 0x1230]
            //   8d9b00000000         | lea                 ebx, [ebx]
            //   668b10               | mov                 dx, word ptr [eax]
            //   663b11               | cmp                 dx, word ptr [ecx]

        $sequence_6 = { 53 6880000000 6a03 53 8908 8b0d???????? 6a01 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   6880000000           | push                0x80
            //   6a03                 | push                3
            //   53                   | push                ebx
            //   8908                 | mov                 dword ptr [eax], ecx
            //   8b0d????????         |                     
            //   6a01                 | push                1

        $sequence_7 = { 83c404 6804010000 8bf8 57 6a00 }
            // n = 5, score = 100
            //   83c404               | add                 esp, 4
            //   6804010000           | push                0x104
            //   8bf8                 | mov                 edi, eax
            //   57                   | push                edi
            //   6a00                 | push                0

        $sequence_8 = { 83c002 6685c9 75e9 8d95f8f7ffff 52 e8???????? 8b4dfc }
            // n = 7, score = 100
            //   83c002               | add                 eax, 2
            //   6685c9               | test                cx, cx
            //   75e9                 | jne                 0xffffffeb
            //   8d95f8f7ffff         | lea                 edx, [ebp - 0x808]
            //   52                   | push                edx
            //   e8????????           |                     
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]

        $sequence_9 = { 0f84ee000000 53 57 33db 8d9b00000000 }
            // n = 5, score = 100
            //   0f84ee000000         | je                  0xf4
            //   53                   | push                ebx
            //   57                   | push                edi
            //   33db                 | xor                 ebx, ebx
            //   8d9b00000000         | lea                 ebx, [ebx]

    condition:
        7 of them and filesize < 191488
}