rule win_credraptor_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.credraptor."
        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.credraptor"
        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 = { a900100000 0f8564020000 a900010000 740d 33ff 897dd8 897dd4 }
            // n = 7, score = 100
            //   a900100000           | test                eax, 0x1000
            //   0f8564020000         | jne                 0x26a
            //   a900010000           | test                eax, 0x100
            //   740d                 | je                  0xf
            //   33ff                 | xor                 edi, edi
            //   897dd8               | mov                 dword ptr [ebp - 0x28], edi
            //   897dd4               | mov                 dword ptr [ebp - 0x2c], edi

        $sequence_1 = { 884dff 7429 8d1480 8d34d7 3bfe 0f8397000000 8d4900 }
            // n = 7, score = 100
            //   884dff               | mov                 byte ptr [ebp - 1], cl
            //   7429                 | je                  0x2b
            //   8d1480               | lea                 edx, [eax + eax*4]
            //   8d34d7               | lea                 esi, [edi + edx*8]
            //   3bfe                 | cmp                 edi, esi
            //   0f8397000000         | jae                 0x9d
            //   8d4900               | lea                 ecx, [ecx]

        $sequence_2 = { e8???????? 8b7dbc 3b7038 7e06 897038 89583c 837d9c00 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b7dbc               | mov                 edi, dword ptr [ebp - 0x44]
            //   3b7038               | cmp                 esi, dword ptr [eax + 0x38]
            //   7e06                 | jle                 8
            //   897038               | mov                 dword ptr [eax + 0x38], esi
            //   89583c               | mov                 dword ptr [eax + 0x3c], ebx
            //   837d9c00             | cmp                 dword ptr [ebp - 0x64], 0

        $sequence_3 = { 85c0 0f85cc000000 8b750c 8b5624 52 53 e8???????? }
            // n = 7, score = 100
            //   85c0                 | test                eax, eax
            //   0f85cc000000         | jne                 0xd2
            //   8b750c               | mov                 esi, dword ptr [ebp + 0xc]
            //   8b5624               | mov                 edx, dword ptr [esi + 0x24]
            //   52                   | push                edx
            //   53                   | push                ebx
            //   e8????????           |                     

        $sequence_4 = { e8???????? 83c404 33c0 8be5 5d c3 8b55fc }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   33c0                 | xor                 eax, eax
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]

        $sequence_5 = { e8???????? 894724 837f2400 5e 752c b860240000 6685471c }
            // n = 7, score = 100
            //   e8????????           |                     
            //   894724               | mov                 dword ptr [edi + 0x24], eax
            //   837f2400             | cmp                 dword ptr [edi + 0x24], 0
            //   5e                   | pop                 esi
            //   752c                 | jne                 0x2e
            //   b860240000           | mov                 eax, 0x2460
            //   6685471c             | test                word ptr [edi + 0x1c], ax

        $sequence_6 = { 8bc8 b8cdcccccc f7e1 8b45b8 c1ea04 895054 895e04 }
            // n = 7, score = 100
            //   8bc8                 | mov                 ecx, eax
            //   b8cdcccccc           | mov                 eax, 0xcccccccd
            //   f7e1                 | mul                 ecx
            //   8b45b8               | mov                 eax, dword ptr [ebp - 0x48]
            //   c1ea04               | shr                 edx, 4
            //   895054               | mov                 dword ptr [eax + 0x54], edx
            //   895e04               | mov                 dword ptr [esi + 4], ebx

        $sequence_7 = { c786b401000010b84100 89b6b8010000 89bebc010000 89bee4010000 3bc7 740a 50 }
            // n = 7, score = 100
            //   c786b401000010b84100     | mov    dword ptr [esi + 0x1b4], 0x41b810
            //   89b6b8010000         | mov                 dword ptr [esi + 0x1b8], esi
            //   89bebc010000         | mov                 dword ptr [esi + 0x1bc], edi
            //   89bee4010000         | mov                 dword ptr [esi + 0x1e4], edi
            //   3bc7                 | cmp                 eax, edi
            //   740a                 | je                  0xc
            //   50                   | push                eax

        $sequence_8 = { 8d7c1f0c 8b9d3cfcffff 3bbd40fcffff 0f8232fdffff 53 e8???????? 83c404 }
            // n = 7, score = 100
            //   8d7c1f0c             | lea                 edi, [edi + ebx + 0xc]
            //   8b9d3cfcffff         | mov                 ebx, dword ptr [ebp - 0x3c4]
            //   3bbd40fcffff         | cmp                 edi, dword ptr [ebp - 0x3c0]
            //   0f8232fdffff         | jb                  0xfffffd38
            //   53                   | push                ebx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4

        $sequence_9 = { ff15???????? 8b45f8 8b5508 83c404 c6460a00 8b4dfc 47 }
            // n = 7, score = 100
            //   ff15????????         |                     
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   83c404               | add                 esp, 4
            //   c6460a00             | mov                 byte ptr [esi + 0xa], 0
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   47                   | inc                 edi

    condition:
        7 of them and filesize < 1728512
}