rule win_diavol_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        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 = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 57 8d8520faffff 50 6802020000 ff15???????? 85c0 7416 }
            // n = 7, score = 100
            //   57                   | push                edi
            //   8d8520faffff         | lea                 eax, [ebp - 0x5e0]
            //   50                   | push                eax
            //   6802020000           | push                0x202
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7416                 | je                  0x18

        $sequence_1 = { 53 ff15???????? ff15???????? b804000000 }
            // n = 4, score = 100
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   ff15????????         |                     
            //   b804000000           | mov                 eax, 4

        $sequence_2 = { 7520 66833e00 7507 c745f801000000 66833800 7507 668378fe2a }
            // n = 7, score = 100
            //   7520                 | jne                 0x22
            //   66833e00             | cmp                 word ptr [esi], 0
            //   7507                 | jne                 9
            //   c745f801000000       | mov                 dword ptr [ebp - 8], 1
            //   66833800             | cmp                 word ptr [eax], 0
            //   7507                 | jne                 9
            //   668378fe2a           | cmp                 word ptr [eax - 2], 0x2a

        $sequence_3 = { 83c404 84c0 0f84d3000000 6800040000 8d95f8f9ffff 6a00 52 }
            // n = 7, score = 100
            //   83c404               | add                 esp, 4
            //   84c0                 | test                al, al
            //   0f84d3000000         | je                  0xd9
            //   6800040000           | push                0x400
            //   8d95f8f9ffff         | lea                 edx, [ebp - 0x608]
            //   6a00                 | push                0
            //   52                   | push                edx

        $sequence_4 = { 0fb68df2feffff 0fb6d0 0fb685f3feffff 52 50 }
            // n = 5, score = 100
            //   0fb68df2feffff       | movzx               ecx, byte ptr [ebp - 0x10e]
            //   0fb6d0               | movzx               edx, al
            //   0fb685f3feffff       | movzx               eax, byte ptr [ebp - 0x10d]
            //   52                   | push                edx
            //   50                   | push                eax

        $sequence_5 = { 8d85fceeffff 53 33ff 50 89bdf8eeffff e8???????? }
            // n = 6, score = 100
            //   8d85fceeffff         | lea                 eax, [ebp - 0x1104]
            //   53                   | push                ebx
            //   33ff                 | xor                 edi, edi
            //   50                   | push                eax
            //   89bdf8eeffff         | mov                 dword ptr [ebp - 0x1108], edi
            //   e8????????           |                     

        $sequence_6 = { 8945f0 e8???????? 8b45f4 83c40c 6880000000 8d55f0 52 }
            // n = 7, score = 100
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   e8????????           |                     
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   83c40c               | add                 esp, 0xc
            //   6880000000           | push                0x80
            //   8d55f0               | lea                 edx, [ebp - 0x10]
            //   52                   | push                edx

        $sequence_7 = { 6a00 50 c7853cc2ffff00000000 e8???????? 83c40c }
            // n = 5, score = 100
            //   6a00                 | push                0
            //   50                   | push                eax
            //   c7853cc2ffff00000000     | mov    dword ptr [ebp - 0x3dc4], 0
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_8 = { 8bd0 52 8d45a0 50 68???????? 68???????? 8d95a0f9ffff }
            // n = 7, score = 100
            //   8bd0                 | mov                 edx, eax
            //   52                   | push                edx
            //   8d45a0               | lea                 eax, [ebp - 0x60]
            //   50                   | push                eax
            //   68????????           |                     
            //   68????????           |                     
            //   8d95a0f9ffff         | lea                 edx, [ebp - 0x660]

        $sequence_9 = { 81ec20010000 a1???????? 33c5 8945fc 6880000000 8d8578ffffff }
            // n = 6, score = 100
            //   81ec20010000         | sub                 esp, 0x120
            //   a1????????           |                     
            //   33c5                 | xor                 eax, ebp
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   6880000000           | push                0x80
            //   8d8578ffffff         | lea                 eax, [ebp - 0x88]

    condition:
        7 of them and filesize < 191488
}