rule win_aveo_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        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 = "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 = { ffd6 85c0 7506 ff15???????? 8b15???????? 57 }
            // n = 6, score = 200
            //   ffd6                 | call                esi
            //   85c0                 | test                eax, eax
            //   7506                 | jne                 8
            //   ff15????????         |                     
            //   8b15????????         |                     
            //   57                   | push                edi

        $sequence_1 = { 8d8df0faffff c785d8faffff00000000 e8???????? 8bbde0faffff }
            // n = 4, score = 200
            //   8d8df0faffff         | lea                 ecx, [ebp - 0x510]
            //   c785d8faffff00000000     | mov    dword ptr [ebp - 0x528], 0
            //   e8????????           |                     
            //   8bbde0faffff         | mov                 edi, dword ptr [ebp - 0x520]

        $sequence_2 = { 0fb6ca 8a9190fa4000 88543002 c64430032d 83c004 5b }
            // n = 6, score = 200
            //   0fb6ca               | movzx               ecx, dl
            //   8a9190fa4000         | mov                 dl, byte ptr [ecx + 0x40fa90]
            //   88543002             | mov                 byte ptr [eax + esi + 2], dl
            //   c64430032d           | mov                 byte ptr [eax + esi + 3], 0x2d
            //   83c004               | add                 eax, 4
            //   5b                   | pop                 ebx

        $sequence_3 = { 741a 8d8dfcefffff 51 8bf8 e8???????? 33ff }
            // n = 6, score = 200
            //   741a                 | je                  0x1c
            //   8d8dfcefffff         | lea                 ecx, [ebp - 0x1004]
            //   51                   | push                ecx
            //   8bf8                 | mov                 edi, eax
            //   e8????????           |                     
            //   33ff                 | xor                 edi, edi

        $sequence_4 = { eb2d 3c34 750e 8d8c241a020000 e8???????? eb1b 3c35 }
            // n = 7, score = 200
            //   eb2d                 | jmp                 0x2f
            //   3c34                 | cmp                 al, 0x34
            //   750e                 | jne                 0x10
            //   8d8c241a020000       | lea                 ecx, [esp + 0x21a]
            //   e8????????           |                     
            //   eb1b                 | jmp                 0x1d
            //   3c35                 | cmp                 al, 0x35

        $sequence_5 = { 52 8d8578fcffff 83e103 50 f3a4 ff15???????? 6800010000 }
            // n = 7, score = 200
            //   52                   | push                edx
            //   8d8578fcffff         | lea                 eax, [ebp - 0x388]
            //   83e103               | and                 ecx, 3
            //   50                   | push                eax
            //   f3a4                 | rep movsb           byte ptr es:[edi], byte ptr [esi]
            //   ff15????????         |                     
            //   6800010000           | push                0x100

        $sequence_6 = { 8d45fc 50 51 e8???????? 8b45fc 8b5708 8907 }
            // n = 7, score = 200
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   8b5708               | mov                 edx, dword ptr [edi + 8]
            //   8907                 | mov                 dword ptr [edi], eax

        $sequence_7 = { 83f908 7229 f3a5 ff249580834000 8bc7 }
            // n = 5, score = 200
            //   83f908               | cmp                 ecx, 8
            //   7229                 | jb                  0x2b
            //   f3a5                 | rep movsd           dword ptr es:[edi], dword ptr [esi]
            //   ff249580834000       | jmp                 dword ptr [edx*4 + 0x408380]
            //   8bc7                 | mov                 eax, edi

        $sequence_8 = { 8d8decfaffff 2bc2 51 50 8d9df8feffff e8???????? }
            // n = 6, score = 200
            //   8d8decfaffff         | lea                 ecx, [ebp - 0x514]
            //   2bc2                 | sub                 eax, edx
            //   51                   | push                ecx
            //   50                   | push                eax
            //   8d9df8feffff         | lea                 ebx, [ebp - 0x108]
            //   e8????????           |                     

        $sequence_9 = { 51 e8???????? 8b4df8 83c404 5f }
            // n = 5, score = 200
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   83c404               | add                 esp, 4
            //   5f                   | pop                 edi

    condition:
        7 of them and filesize < 180224
}