rule win_carberp_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.carberp."
        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.carberp"
        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 = { 5e c3 33c0 c20c00 686a008404 6a03 6a00 }
            // n = 7, score = 200
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   33c0                 | xor                 eax, eax
            //   c20c00               | ret                 0xc
            //   686a008404           | push                0x484006a
            //   6a03                 | push                3
            //   6a00                 | push                0

        $sequence_1 = { 53 56 8b7508 33db 57 3bf3 0f84ff000000 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   33db                 | xor                 ebx, ebx
            //   57                   | push                edi
            //   3bf3                 | cmp                 esi, ebx
            //   0f84ff000000         | je                  0x105

        $sequence_2 = { 5e 3bc3 0f9fc0 5b c9 c3 53 }
            // n = 7, score = 200
            //   5e                   | pop                 esi
            //   3bc3                 | cmp                 eax, ebx
            //   0f9fc0               | setg                al
            //   5b                   | pop                 ebx
            //   c9                   | leave               
            //   c3                   | ret                 
            //   53                   | push                ebx

        $sequence_3 = { ff742410 ffd0 c3 6842773b3e 6a07 6a00 e8???????? }
            // n = 7, score = 200
            //   ff742410             | push                dword ptr [esp + 0x10]
            //   ffd0                 | call                eax
            //   c3                   | ret                 
            //   6842773b3e           | push                0x3e3b7742
            //   6a07                 | push                7
            //   6a00                 | push                0
            //   e8????????           |                     

        $sequence_4 = { 743b 6a04 6a00 56 e8???????? a1???????? 83c40c }
            // n = 7, score = 200
            //   743b                 | je                  0x3d
            //   6a04                 | push                4
            //   6a00                 | push                0
            //   56                   | push                esi
            //   e8????????           |                     
            //   a1????????           |                     
            //   83c40c               | add                 esp, 0xc

        $sequence_5 = { c3 68cab54099 6a03 6a00 e8???????? 83c40c ff742408 }
            // n = 7, score = 200
            //   c3                   | ret                 
            //   68cab54099           | push                0x9940b5ca
            //   6a03                 | push                3
            //   6a00                 | push                0
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   ff742408             | push                dword ptr [esp + 8]

        $sequence_6 = { 83c404 85c0 741e 68???????? ff74240c 6a27 6a00 }
            // n = 7, score = 200
            //   83c404               | add                 esp, 4
            //   85c0                 | test                eax, eax
            //   741e                 | je                  0x20
            //   68????????           |                     
            //   ff74240c             | push                dword ptr [esp + 0xc]
            //   6a27                 | push                0x27
            //   6a00                 | push                0

        $sequence_7 = { ff7508 6a01 56 e8???????? ff7510 6a04 56 }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   6a01                 | push                1
            //   56                   | push                esi
            //   e8????????           |                     
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   6a04                 | push                4
            //   56                   | push                esi

        $sequence_8 = { 56 8b742408 83c61c 833e00 7407 56 e8???????? }
            // n = 7, score = 200
            //   56                   | push                esi
            //   8b742408             | mov                 esi, dword ptr [esp + 8]
            //   83c61c               | add                 esi, 0x1c
            //   833e00               | cmp                 dword ptr [esi], 0
            //   7407                 | je                  9
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_9 = { ff7508 e8???????? 59 84c0 0f85b6000000 8b7d10 85ff }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   84c0                 | test                al, al
            //   0f85b6000000         | jne                 0xbc
            //   8b7d10               | mov                 edi, dword ptr [ebp + 0x10]
            //   85ff                 | test                edi, edi

    condition:
        7 of them and filesize < 491520
}