rule win_carberp_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        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 = "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 = { ff7508 8bf0 e8???????? 83c414 8945fc 85c0 7415 }
            // n = 7, score = 200
            //   ff7508               | push                dword ptr [ebp + 8]
            //   8bf0                 | mov                 esi, eax
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   85c0                 | test                eax, eax
            //   7415                 | je                  0x17

        $sequence_1 = { 8d45f8 50 57 e8???????? ff75f8 e8???????? 83c410 }
            // n = 7, score = 200
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10

        $sequence_2 = { 53 6aff be0c100000 eb58 6a3c 8d45c4 53 }
            // n = 7, score = 200
            //   53                   | push                ebx
            //   6aff                 | push                -1
            //   be0c100000           | mov                 esi, 0x100c
            //   eb58                 | jmp                 0x5a
            //   6a3c                 | push                0x3c
            //   8d45c4               | lea                 eax, [ebp - 0x3c]
            //   53                   | push                ebx

        $sequence_3 = { 3bc6 77ef 3bc6 74de 2bc6 40 50 }
            // n = 7, score = 200
            //   3bc6                 | cmp                 eax, esi
            //   77ef                 | ja                  0xfffffff1
            //   3bc6                 | cmp                 eax, esi
            //   74de                 | je                  0xffffffe0
            //   2bc6                 | sub                 eax, esi
            //   40                   | inc                 eax
            //   50                   | push                eax

        $sequence_4 = { 83f8fe 7524 8b460c 3b05???????? 7c19 33c0 e9???????? }
            // n = 7, score = 200
            //   83f8fe               | cmp                 eax, -2
            //   7524                 | jne                 0x26
            //   8b460c               | mov                 eax, dword ptr [esi + 0xc]
            //   3b05????????         |                     
            //   7c19                 | jl                  0x1b
            //   33c0                 | xor                 eax, eax
            //   e9????????           |                     

        $sequence_5 = { ff74240c ffd0 c3 681d5b931f 6a04 6a00 e8???????? }
            // n = 7, score = 200
            //   ff74240c             | push                dword ptr [esp + 0xc]
            //   ffd0                 | call                eax
            //   c3                   | ret                 
            //   681d5b931f           | push                0x1f935b1d
            //   6a04                 | push                4
            //   6a00                 | push                0
            //   e8????????           |                     

        $sequence_6 = { 5e c3 6804010000 e8???????? 59 85c0 7501 }
            // n = 7, score = 200
            //   5e                   | pop                 esi
            //   c3                   | ret                 
            //   6804010000           | push                0x104
            //   e8????????           |                     
            //   59                   | pop                 ecx
            //   85c0                 | test                eax, eax
            //   7501                 | jne                 3

        $sequence_7 = { 7432 8d45f8 50 56 e8???????? 8bf0 8d45f8 }
            // n = 7, score = 200
            //   7432                 | je                  0x34
            //   8d45f8               | lea                 eax, [ebp - 8]
            //   50                   | push                eax
            //   56                   | push                esi
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   8d45f8               | lea                 eax, [ebp - 8]

        $sequence_8 = { 57 53 e8???????? 83c418 ff45fc 56 e8???????? }
            // n = 7, score = 200
            //   57                   | push                edi
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   ff45fc               | inc                 dword ptr [ebp - 4]
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_9 = { ff75f8 ff75fc e8???????? ff75fc e8???????? 83c40c 33c0 }
            // n = 7, score = 200
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   ff75fc               | push                dword ptr [ebp - 4]
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   33c0                 | xor                 eax, eax

    condition:
        7 of them and filesize < 491520
}