rule win_diavol_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "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 = { 6ad4 56 ffd3 6a00 8d45cc }
            // n = 5, score = 100
            //   6ad4                 | push                -0x2c
            //   56                   | push                esi
            //   ffd3                 | call                ebx
            //   6a00                 | push                0
            //   8d45cc               | lea                 eax, [ebp - 0x34]

        $sequence_1 = { 51 8d9578ffffff 52 ff15???????? 6880000000 }
            // n = 5, score = 100
            //   51                   | push                ecx
            //   8d9578ffffff         | lea                 edx, [ebp - 0x88]
            //   52                   | push                edx
            //   ff15????????         |                     
            //   6880000000           | push                0x80

        $sequence_2 = { 6800020000 8d85a0fdffff 6a00 50 e8???????? }
            // n = 5, score = 100
            //   6800020000           | push                0x200
            //   8d85a0fdffff         | lea                 eax, [ebp - 0x260]
            //   6a00                 | push                0
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_3 = { e8???????? 8b4dfc 33cd 83c45c e8???????? 8be5 }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   33cd                 | xor                 ecx, ebp
            //   83c45c               | add                 esp, 0x5c
            //   e8????????           |                     
            //   8be5                 | mov                 esp, ebp

        $sequence_4 = { 6a02 8d9c3594f7ffff 68???????? 53 8bfe e8???????? }
            // n = 6, score = 100
            //   6a02                 | push                2
            //   8d9c3594f7ffff       | lea                 ebx, [ebp + esi - 0x86c]
            //   68????????           |                     
            //   53                   | push                ebx
            //   8bfe                 | mov                 edi, esi
            //   e8????????           |                     

        $sequence_5 = { 6a02 ff15???????? 8bf0 83feff 0f842c010000 33c0 ba02000000 }
            // n = 7, score = 100
            //   6a02                 | push                2
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   83feff               | cmp                 esi, -1
            //   0f842c010000         | je                  0x132
            //   33c0                 | xor                 eax, eax
            //   ba02000000           | mov                 edx, 2

        $sequence_6 = { 85f6 752a 6a02 53 ff15???????? }
            // n = 5, score = 100
            //   85f6                 | test                esi, esi
            //   752a                 | jne                 0x2c
            //   6a02                 | push                2
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_7 = { e9???????? 57 ff15???????? 8b4df8 5f }
            // n = 5, score = 100
            //   e9????????           |                     
            //   57                   | push                edi
            //   ff15????????         |                     
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   5f                   | pop                 edi

        $sequence_8 = { c785fcefffff00000000 e8???????? 6800020000 8d85a0fdffff 6a00 }
            // n = 5, score = 100
            //   c785fcefffff00000000     | mov    dword ptr [ebp - 0x1004], 0
            //   e8????????           |                     
            //   6800020000           | push                0x200
            //   8d85a0fdffff         | lea                 eax, [ebp - 0x260]
            //   6a00                 | push                0

        $sequence_9 = { e8???????? 83c40c 85c0 75e4 2bfe }
            // n = 5, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax
            //   75e4                 | jne                 0xffffffe6
            //   2bfe                 | sub                 edi, esi

    condition:
        7 of them and filesize < 191488
}