rule win_babar_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        version = "1"
        description = "Detects win.babar."
        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.babar"
        malpedia_rule_date = "20220405"
        malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a"
        malpedia_version = "20220411"
        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 = { 3bc6 740e 8d4e04 3bc1 }
            // n = 4, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   740e                 | je                  0x10
            //   8d4e04               | lea                 ecx, dword ptr [esi + 4]
            //   3bc1                 | cmp                 eax, ecx

        $sequence_1 = { 3bc6 740a 50 e8???????? 59 89775c }
            // n = 6, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   740a                 | je                  0xc
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   89775c               | mov                 dword ptr [edi + 0x5c], esi

        $sequence_2 = { 3bc6 7405 8b4df8 8908 ff75f4 }
            // n = 5, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   7405                 | je                  7
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   8908                 | mov                 dword ptr [eax], ecx
            //   ff75f4               | push                dword ptr [ebp - 0xc]

        $sequence_3 = { 40 eb65 7608 83662400 }
            // n = 4, score = 400
            //   40                   | inc                 eax
            //   eb65                 | jmp                 0x67
            //   7608                 | jbe                 0xa
            //   83662400             | and                 dword ptr [esi + 0x24], 0

        $sequence_4 = { 3bc6 740b 53 8d4de4 }
            // n = 4, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   740b                 | je                  0xd
            //   53                   | push                ebx
            //   8d4de4               | lea                 ecx, dword ptr [ebp - 0x1c]

        $sequence_5 = { 3bc6 731a 8bc6 2b45f0 8bcf }
            // n = 5, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   731a                 | jae                 0x1c
            //   8bc6                 | mov                 eax, esi
            //   2b45f0               | sub                 eax, dword ptr [ebp - 0x10]
            //   8bcf                 | mov                 ecx, edi

        $sequence_6 = { 3bc6 740c 56 56 6a15 }
            // n = 5, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   740c                 | je                  0xe
            //   56                   | push                esi
            //   56                   | push                esi
            //   6a15                 | push                0x15

        $sequence_7 = { 3bc6 7407 8b4df0 8908 eb05 ff75f0 ffd3 }
            // n = 7, score = 400
            //   3bc6                 | cmp                 eax, esi
            //   7407                 | je                  9
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   8908                 | mov                 dword ptr [eax], ecx
            //   eb05                 | jmp                 7
            //   ff75f0               | push                dword ptr [ebp - 0x10]
            //   ffd3                 | call                ebx

        $sequence_8 = { 8b7c2410 6a00 6a00 6a03 6a00 6a01 6800000080 }
            // n = 7, score = 200
            //   8b7c2410             | mov                 edi, dword ptr [esp + 0x10]
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a03                 | push                3
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   6800000080           | push                0x80000000

        $sequence_9 = { 8b0d???????? eb5f 68???????? 68???????? }
            // n = 4, score = 200
            //   8b0d????????         |                     
            //   eb5f                 | jmp                 0x61
            //   68????????           |                     
            //   68????????           |                     

        $sequence_10 = { 8b74241c 8b3d???????? 752f 6804010000 56 68???????? }
            // n = 6, score = 200
            //   8b74241c             | mov                 esi, dword ptr [esp + 0x1c]
            //   8b3d????????         |                     
            //   752f                 | jne                 0x31
            //   6804010000           | push                0x104
            //   56                   | push                esi
            //   68????????           |                     

        $sequence_11 = { b8???????? 0fb71d???????? 53 0fb71d???????? 53 0fb71d???????? }
            // n = 6, score = 200
            //   b8????????           |                     
            //   0fb71d????????       |                     
            //   53                   | push                ebx
            //   0fb71d????????       |                     
            //   53                   | push                ebx
            //   0fb71d????????       |                     

        $sequence_12 = { 52 ff15???????? 33ff e9???????? 8b8c24d0000000 }
            // n = 5, score = 200
            //   52                   | push                edx
            //   ff15????????         |                     
            //   33ff                 | xor                 edi, edi
            //   e9????????           |                     
            //   8b8c24d0000000       | mov                 ecx, dword ptr [esp + 0xd0]

        $sequence_13 = { 803c065c 7409 83ee01 803c065c }
            // n = 4, score = 200
            //   803c065c             | cmp                 byte ptr [esi + eax], 0x5c
            //   7409                 | je                  0xb
            //   83ee01               | sub                 esi, 1
            //   803c065c             | cmp                 byte ptr [esi + eax], 0x5c

        $sequence_14 = { ff15???????? 85c0 752b 8d4c2410 51 56 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   752b                 | jne                 0x2d
            //   8d4c2410             | lea                 ecx, dword ptr [esp + 0x10]
            //   51                   | push                ecx
            //   56                   | push                esi

        $sequence_15 = { 81ca00ffffff 42 0fb6ca 8a1c01 885c2424 0fb6db 03de }
            // n = 7, score = 200
            //   81ca00ffffff         | or                  edx, 0xffffff00
            //   42                   | inc                 edx
            //   0fb6ca               | movzx               ecx, dl
            //   8a1c01               | mov                 bl, byte ptr [ecx + eax]
            //   885c2424             | mov                 byte ptr [esp + 0x24], bl
            //   0fb6db               | movzx               ebx, bl
            //   03de                 | add                 ebx, esi

    condition:
        7 of them and filesize < 1294336
}