rule win_aveo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.aveo."
        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.aveo"
        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 = { 8d8c241a020000 e8???????? eb3f 3c33 }
            // n = 4, score = 200
            //   8d8c241a020000       | lea                 ecx, [esp + 0x21a]
            //   e8????????           |                     
            //   eb3f                 | jmp                 0x41
            //   3c33                 | cmp                 al, 0x33

        $sequence_1 = { 7524 a1???????? a3???????? a1???????? c705????????94894000 }
            // n = 5, score = 200
            //   7524                 | jne                 0x26
            //   a1????????           |                     
            //   a3????????           |                     
            //   a1????????           |                     
            //   c705????????94894000     |     

        $sequence_2 = { 56 6a7f 8d8579ffffff 6a00 }
            // n = 4, score = 200
            //   56                   | push                esi
            //   6a7f                 | push                0x7f
            //   8d8579ffffff         | lea                 eax, [ebp - 0x87]
            //   6a00                 | push                0

        $sequence_3 = { 8975e0 8db1e01a4100 8975e4 eb2b 8a4601 84c0 }
            // n = 6, score = 200
            //   8975e0               | mov                 dword ptr [ebp - 0x20], esi
            //   8db1e01a4100         | lea                 esi, [ecx + 0x411ae0]
            //   8975e4               | mov                 dword ptr [ebp - 0x1c], esi
            //   eb2b                 | jmp                 0x2d
            //   8a4601               | mov                 al, byte ptr [esi + 1]
            //   84c0                 | test                al, al

        $sequence_4 = { 8d95f4feffff 52 8d85f4fbffff 68???????? 50 e8???????? 83c41c }
            // n = 7, score = 200
            //   8d95f4feffff         | lea                 edx, [ebp - 0x10c]
            //   52                   | push                edx
            //   8d85f4fbffff         | lea                 eax, [ebp - 0x40c]
            //   68????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c

        $sequence_5 = { 8b04bd002e4100 0500080000 3bf0 0f8396000000 f6460401 755b 837e0800 }
            // n = 7, score = 200
            //   8b04bd002e4100       | mov                 eax, dword ptr [edi*4 + 0x412e00]
            //   0500080000           | add                 eax, 0x800
            //   3bf0                 | cmp                 esi, eax
            //   0f8396000000         | jae                 0x9c
            //   f6460401             | test                byte ptr [esi + 4], 1
            //   755b                 | jne                 0x5d
            //   837e0800             | cmp                 dword ptr [esi + 8], 0

        $sequence_6 = { 85c0 7516 a1???????? 8b0d???????? a3???????? 890d???????? }
            // n = 6, score = 200
            //   85c0                 | test                eax, eax
            //   7516                 | jne                 0x18
            //   a1????????           |                     
            //   8b0d????????         |                     
            //   a3????????           |                     
            //   890d????????         |                     

        $sequence_7 = { 8b55f4 885c3701 8b5d08 03d1 807c1a032d 7438 }
            // n = 6, score = 200
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]
            //   885c3701             | mov                 byte ptr [edi + esi + 1], bl
            //   8b5d08               | mov                 ebx, dword ptr [ebp + 8]
            //   03d1                 | add                 edx, ecx
            //   807c1a032d           | cmp                 byte ptr [edx + ebx + 3], 0x2d
            //   7438                 | je                  0x3a

        $sequence_8 = { 8b5808 8bf1 8b08 51 }
            // n = 4, score = 200
            //   8b5808               | mov                 ebx, dword ptr [eax + 8]
            //   8bf1                 | mov                 esi, ecx
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   51                   | push                ecx

        $sequence_9 = { 50 6a00 ffd6 6a64 ffd7 }
            // n = 5, score = 200
            //   50                   | push                eax
            //   6a00                 | push                0
            //   ffd6                 | call                esi
            //   6a64                 | push                0x64
            //   ffd7                 | call                edi

    condition:
        7 of them and filesize < 180224
}