rule win_diavol_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 3bc1 0f87200a0000 ff248584564000 33c0 838de8fdffffff 89858cfdffff 8985a4fdffff }
            // n = 7, score = 100
            //   3bc1                 | cmp                 eax, ecx
            //   0f87200a0000         | ja                  0xa26
            //   ff248584564000       | jmp                 dword ptr [eax*4 + 0x405684]
            //   33c0                 | xor                 eax, eax
            //   838de8fdffffff       | or                  dword ptr [ebp - 0x218], 0xffffffff
            //   89858cfdffff         | mov                 dword ptr [ebp - 0x274], eax
            //   8985a4fdffff         | mov                 dword ptr [ebp - 0x25c], eax

        $sequence_1 = { 8bff 56 57 33ff ffb7500d4100 ff15???????? 8987500d4100 }
            // n = 7, score = 100
            //   8bff                 | mov                 edi, edi
            //   56                   | push                esi
            //   57                   | push                edi
            //   33ff                 | xor                 edi, edi
            //   ffb7500d4100         | push                dword ptr [edi + 0x410d50]
            //   ff15????????         |                     
            //   8987500d4100         | mov                 dword ptr [edi + 0x410d50], eax

        $sequence_2 = { 50 6802020000 ff15???????? 85c0 0f85bc010000 6a06 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   6802020000           | push                0x202
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f85bc010000         | jne                 0x1c2
            //   6a06                 | push                6

        $sequence_3 = { 75f0 8d95fcfeffff 52 43 e8???????? }
            // n = 5, score = 100
            //   75f0                 | jne                 0xfffffff2
            //   8d95fcfeffff         | lea                 edx, [ebp - 0x104]
            //   52                   | push                edx
            //   43                   | inc                 ebx
            //   e8????????           |                     

        $sequence_4 = { 8d55f0 52 56 6a00 6a01 }
            // n = 5, score = 100
            //   8d55f0               | lea                 edx, [ebp - 0x10]
            //   52                   | push                edx
            //   56                   | push                esi
            //   6a00                 | push                0
            //   6a01                 | push                1

        $sequence_5 = { ff15???????? 85c0 7506 ff85c4fbffff }
            // n = 4, score = 100
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7506                 | jne                 8
            //   ff85c4fbffff         | inc                 dword ptr [ebp - 0x43c]

        $sequence_6 = { e8???????? 83c40c 8b4dfc 5f 5e 33cd b001 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   33cd                 | xor                 ecx, ebp
            //   b001                 | mov                 al, 1

        $sequence_7 = { 8bff 55 8bec 8b4508 ff34c558094100 ff15???????? 5d }
            // n = 7, score = 100
            //   8bff                 | mov                 edi, edi
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   ff34c558094100       | push                dword ptr [eax*8 + 0x410958]
            //   ff15????????         |                     
            //   5d                   | pop                 ebp

        $sequence_8 = { 6a20 53 56 ff15???????? 8bf8 85ff }
            // n = 6, score = 100
            //   6a20                 | push                0x20
            //   53                   | push                ebx
            //   56                   | push                esi
            //   ff15????????         |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi

        $sequence_9 = { 8945fc 6880000000 8d8578ffffff 6a00 50 }
            // n = 5, score = 100
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   6880000000           | push                0x80
            //   8d8578ffffff         | lea                 eax, [ebp - 0x88]
            //   6a00                 | push                0
            //   50                   | push                eax

    condition:
        7 of them and filesize < 191488
}