rule win_carberp_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-04-08"
        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 = "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 = { e8???????? 8b7df4 6a05 57 8945f8 e8???????? 57 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   8b7df4               | mov                 edi, dword ptr [ebp - 0xc]
            //   6a05                 | push                5
            //   57                   | push                edi
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   e8????????           |                     
            //   57                   | push                edi

        $sequence_1 = { 68???????? 50 e8???????? 68???????? 893d???????? e8???????? 83c418 }
            // n = 7, score = 200
            //   68????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   68????????           |                     
            //   893d????????         |                     
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18

        $sequence_2 = { b8???????? 3bf7 7505 b8???????? 50 e8???????? 59 }
            // n = 7, score = 200
            //   b8????????           |                     
            //   3bf7                 | cmp                 esi, edi
            //   7505                 | jne                 7
            //   b8????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_3 = { 55 8bec 83e4f8 51 803d????????00 53 56 }
            // n = 7, score = 200
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83e4f8               | and                 esp, 0xfffffff8
            //   51                   | push                ecx
            //   803d????????00       |                     
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_4 = { 8bf0 8d862e010000 50 e8???????? 687a5c3f6a 6a0d 8d7e0c }
            // n = 7, score = 200
            //   8bf0                 | mov                 esi, eax
            //   8d862e010000         | lea                 eax, dword ptr [esi + 0x12e]
            //   50                   | push                eax
            //   e8????????           |                     
            //   687a5c3f6a           | push                0x6a3f5c7a
            //   6a0d                 | push                0xd
            //   8d7e0c               | lea                 edi, dword ptr [esi + 0xc]

        $sequence_5 = { ff75f4 c6002f 40 50 e8???????? 83c418 5f }
            // n = 7, score = 200
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   c6002f               | mov                 byte ptr [eax], 0x2f
            //   40                   | inc                 eax
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   5f                   | pop                 edi

        $sequence_6 = { 59 32c9 eb15 3c0a 7504 04f7 eb06 }
            // n = 7, score = 200
            //   59                   | pop                 ecx
            //   32c9                 | xor                 cl, cl
            //   eb15                 | jmp                 0x17
            //   3c0a                 | cmp                 al, 0xa
            //   7504                 | jne                 6
            //   04f7                 | add                 al, 0xf7
            //   eb06                 | jmp                 8

        $sequence_7 = { e8???????? 53 e8???????? 83c414 6a00 bb???????? 53 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   6a00                 | push                0
            //   bb????????           |                     
            //   53                   | push                ebx

        $sequence_8 = { 8d4801 3b4d0c 897d10 7d65 83ff10 7d3b 8a1431 }
            // n = 7, score = 200
            //   8d4801               | lea                 ecx, dword ptr [eax + 1]
            //   3b4d0c               | cmp                 ecx, dword ptr [ebp + 0xc]
            //   897d10               | mov                 dword ptr [ebp + 0x10], edi
            //   7d65                 | jge                 0x67
            //   83ff10               | cmp                 edi, 0x10
            //   7d3b                 | jge                 0x3d
            //   8a1431               | mov                 dl, byte ptr [ecx + esi]

        $sequence_9 = { ff760c 894604 56 57 e8???????? 83c418 85c0 }
            // n = 7, score = 200
            //   ff760c               | push                dword ptr [esi + 0xc]
            //   894604               | mov                 dword ptr [esi + 4], eax
            //   56                   | push                esi
            //   57                   | push                edi
            //   e8????????           |                     
            //   83c418               | add                 esp, 0x18
            //   85c0                 | test                eax, eax

    condition:
        7 of them and filesize < 491520
}