rule win_babar_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "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 = { 0101 c9 c3 56 8bf1 }
            // n = 5, score = 400
            //   0101                 | add                 dword ptr [ecx], eax
            //   c9                   | leave               
            //   c3                   | ret                 
            //   56                   | push                esi
            //   8bf1                 | mov                 esi, ecx

        $sequence_1 = { 0138 668bc7 5f 5e }
            // n = 4, score = 400
            //   0138                 | add                 dword ptr [eax], edi
            //   668bc7               | mov                 ax, di
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_2 = { 46 e8???????? 8bc6 eb06 4f 381e 7434 }
            // n = 7, score = 400
            //   46                   | inc                 esi
            //   e8????????           |                     
            //   8bc6                 | mov                 eax, esi
            //   eb06                 | jmp                 8
            //   4f                   | dec                 edi
            //   381e                 | cmp                 byte ptr [esi], bl
            //   7434                 | je                  0x36

        $sequence_3 = { 0103 83530400 8b4728 894634 }
            // n = 4, score = 400
            //   0103                 | add                 dword ptr [ebx], eax
            //   83530400             | adc                 dword ptr [ebx + 4], 0
            //   8b4728               | mov                 eax, dword ptr [edi + 0x28]
            //   894634               | mov                 dword ptr [esi + 0x34], eax

        $sequence_4 = { 0137 2933 33c0 40 }
            // n = 4, score = 400
            //   0137                 | add                 dword ptr [edi], esi
            //   2933                 | sub                 dword ptr [ebx], esi
            //   33c0                 | xor                 eax, eax
            //   40                   | inc                 eax

        $sequence_5 = { 010a 8b16 390c82 1bc9 }
            // n = 4, score = 400
            //   010a                 | add                 dword ptr [edx], ecx
            //   8b16                 | mov                 edx, dword ptr [esi]
            //   390c82               | cmp                 dword ptr [edx + eax*4], ecx
            //   1bc9                 | sbb                 ecx, ecx

        $sequence_6 = { 0107 8b3f 57 897d08 }
            // n = 4, score = 400
            //   0107                 | add                 dword ptr [edi], eax
            //   8b3f                 | mov                 edi, dword ptr [edi]
            //   57                   | push                edi
            //   897d08               | mov                 dword ptr [ebp + 8], edi

        $sequence_7 = { 0108 015dfc 8b45fc 3b450c }
            // n = 4, score = 400
            //   0108                 | add                 dword ptr [eax], ecx
            //   015dfc               | add                 dword ptr [ebp - 4], ebx
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   3b450c               | cmp                 eax, dword ptr [ebp + 0xc]

        $sequence_8 = { 51 e8???????? 83c40c 385c2428 0f842e010000 8b35???????? }
            // n = 6, score = 200
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   385c2428             | cmp                 byte ptr [esp + 0x28], bl
            //   0f842e010000         | je                  0x134
            //   8b35????????         |                     

        $sequence_9 = { 3bc7 a3???????? 0f846f010000 a1???????? 50 e8???????? 83c404 }
            // n = 7, score = 200
            //   3bc7                 | cmp                 eax, edi
            //   a3????????           |                     
            //   0f846f010000         | je                  0x175
            //   a1????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_10 = { 8d0424 50 a1???????? 8d4c2408 51 8b0d???????? 52 }
            // n = 7, score = 200
            //   8d0424               | lea                 eax, [esp]
            //   50                   | push                eax
            //   a1????????           |                     
            //   8d4c2408             | lea                 ecx, [esp + 8]
            //   51                   | push                ecx
            //   8b0d????????         |                     
            //   52                   | push                edx

        $sequence_11 = { 0fb658fa c1e208 0bd3 83f910 895428f0 0f827affffff }
            // n = 6, score = 200
            //   0fb658fa             | movzx               ebx, byte ptr [eax - 6]
            //   c1e208               | shl                 edx, 8
            //   0bd3                 | or                  edx, ebx
            //   83f910               | cmp                 ecx, 0x10
            //   895428f0             | mov                 dword ptr [eax + ebp - 0x10], edx
            //   0f827affffff         | jb                  0xffffff80

        $sequence_12 = { 51 ffd7 50 8b06 8d94243c010000 }
            // n = 5, score = 200
            //   51                   | push                ecx
            //   ffd7                 | call                edi
            //   50                   | push                eax
            //   8b06                 | mov                 eax, dword ptr [esi]
            //   8d94243c010000       | lea                 edx, [esp + 0x13c]

        $sequence_13 = { 85c0 7562 68???????? 68???????? ff15???????? 8b0d???????? 51 }
            // n = 7, score = 200
            //   85c0                 | test                eax, eax
            //   7562                 | jne                 0x64
            //   68????????           |                     
            //   68????????           |                     
            //   ff15????????         |                     
            //   8b0d????????         |                     
            //   51                   | push                ecx

        $sequence_14 = { 7420 6a00 8d442414 50 8d34fdbc730110 ff36 e8???????? }
            // n = 7, score = 200
            //   7420                 | je                  0x22
            //   6a00                 | push                0
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax
            //   8d34fdbc730110       | lea                 esi, [edi*8 + 0x100173bc]
            //   ff36                 | push                dword ptr [esi]
            //   e8????????           |                     

        $sequence_15 = { 33c0 e8???????? 81c468040000 c3 57 }
            // n = 5, score = 200
            //   33c0                 | xor                 eax, eax
            //   e8????????           |                     
            //   81c468040000         | add                 esp, 0x468
            //   c3                   | ret                 
            //   57                   | push                edi

    condition:
        7 of them and filesize < 1294336
}