rule win_pebbledash_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.pebbledash."
        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.pebbledash"
        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 = { 8b11 52 e8???????? 83c404 8b8594baffff c74004ffffffff 8b8d94baffff }
            // n = 7, score = 100
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8b8594baffff         | mov                 eax, dword ptr [ebp - 0x456c]
            //   c74004ffffffff       | mov                 dword ptr [eax + 4], 0xffffffff
            //   8b8d94baffff         | mov                 ecx, dword ptr [ebp - 0x456c]

        $sequence_1 = { eb7d 8b8db0f9ffff 83e110 85c9 742c 8b95a8f9ffff 52 }
            // n = 7, score = 100
            //   eb7d                 | jmp                 0x7f
            //   8b8db0f9ffff         | mov                 ecx, dword ptr [ebp - 0x650]
            //   83e110               | and                 ecx, 0x10
            //   85c9                 | test                ecx, ecx
            //   742c                 | je                  0x2e
            //   8b95a8f9ffff         | mov                 edx, dword ptr [ebp - 0x658]
            //   52                   | push                edx

        $sequence_2 = { 8d8598f3ffff 50 b9???????? e8???????? e9???????? 8b8d84efffff 8d540902 }
            // n = 7, score = 100
            //   8d8598f3ffff         | lea                 eax, [ebp - 0xc68]
            //   50                   | push                eax
            //   b9????????           |                     
            //   e8????????           |                     
            //   e9????????           |                     
            //   8b8d84efffff         | mov                 ecx, dword ptr [ebp - 0x107c]
            //   8d540902             | lea                 edx, [ecx + ecx + 2]

        $sequence_3 = { 55 8bec 83ec0c 894df4 8b45f4 837804ff 7468 }
            // n = 7, score = 100
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83ec0c               | sub                 esp, 0xc
            //   894df4               | mov                 dword ptr [ebp - 0xc], ecx
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   837804ff             | cmp                 dword ptr [eax + 4], -1
            //   7468                 | je                  0x6a

        $sequence_4 = { 8b4d08 8b9144af0100 8d440204 8b4d08 898144af0100 8b5508 c78248af010000000000 }
            // n = 7, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b9144af0100         | mov                 edx, dword ptr [ecx + 0x1af44]
            //   8d440204             | lea                 eax, [edx + eax + 4]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   898144af0100         | mov                 dword ptr [ecx + 0x1af44], eax
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   c78248af010000000000     | mov    dword ptr [edx + 0x1af48], 0

        $sequence_5 = { 3b4804 0f84a5000000 8b9594baffff 837a04ff 7411 8b8594baffff 8b08 }
            // n = 7, score = 100
            //   3b4804               | cmp                 ecx, dword ptr [eax + 4]
            //   0f84a5000000         | je                  0xab
            //   8b9594baffff         | mov                 edx, dword ptr [ebp - 0x456c]
            //   837a04ff             | cmp                 dword ptr [edx + 4], -1
            //   7411                 | je                  0x13
            //   8b8594baffff         | mov                 eax, dword ptr [ebp - 0x456c]
            //   8b08                 | mov                 ecx, dword ptr [eax]

        $sequence_6 = { 85c0 7511 8b8598fdffff 50 ff15???????? 33c0 }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   7511                 | jne                 0x13
            //   8b8598fdffff         | mov                 eax, dword ptr [ebp - 0x268]
            //   50                   | push                eax
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax

        $sequence_7 = { e8???????? 8945fc 8b4d0c 2b4d08 83c101 894df8 8b45fc }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   2b4d08               | sub                 ecx, dword ptr [ebp + 8]
            //   83c101               | add                 ecx, 1
            //   894df8               | mov                 dword ptr [ebp - 8], ecx
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_8 = { 8b858cefffff 50 8b8d88efffff 51 b9???????? e8???????? 85c0 }
            // n = 7, score = 100
            //   8b858cefffff         | mov                 eax, dword ptr [ebp - 0x1074]
            //   50                   | push                eax
            //   8b8d88efffff         | mov                 ecx, dword ptr [ebp - 0x1078]
            //   51                   | push                ecx
            //   b9????????           |                     
            //   e8????????           |                     
            //   85c0                 | test                eax, eax

        $sequence_9 = { 81c200000300 52 e8???????? 83c40c 8b45fc }
            // n = 5, score = 100
            //   81c200000300         | add                 edx, 0x30000
            //   52                   | push                edx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

    condition:
        7 of them and filesize < 360448
}