rule win_woodyrat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.woodyrat."
        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.woodyrat"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 0f4385f4feffff 898dbcfeffff 8985c0feffff 83f908 730d 0f1000 bf07000000 }
            // n = 7, score = 100
            //   0f4385f4feffff       | cmovae              eax, dword ptr [ebp - 0x10c]
            //   898dbcfeffff         | mov                 dword ptr [ebp - 0x144], ecx
            //   8985c0feffff         | mov                 dword ptr [ebp - 0x140], eax
            //   83f908               | cmp                 ecx, 8
            //   730d                 | jae                 0xf
            //   0f1000               | movups              xmm0, xmmword ptr [eax]
            //   bf07000000           | mov                 edi, 7

        $sequence_1 = { 897dd0 8945d4 c70600000000 c7460400000000 c7460800000000 eb02 33ff }
            // n = 7, score = 100
            //   897dd0               | mov                 dword ptr [ebp - 0x30], edi
            //   8945d4               | mov                 dword ptr [ebp - 0x2c], eax
            //   c70600000000         | mov                 dword ptr [esi], 0
            //   c7460400000000       | mov                 dword ptr [esi + 4], 0
            //   c7460800000000       | mov                 dword ptr [esi + 8], 0
            //   eb02                 | jmp                 4
            //   33ff                 | xor                 edi, edi

        $sequence_2 = { 8bcc 50 e8???????? 8d8d68feffff e8???????? 8bf0 83c418 }
            // n = 7, score = 100
            //   8bcc                 | mov                 ecx, esp
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d8d68feffff         | lea                 ecx, [ebp - 0x198]
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax
            //   83c418               | add                 esp, 0x18

        $sequence_3 = { 85f6 7411 8b8d4cffffff 6a00 51 ff15???????? 8bf0 }
            // n = 7, score = 100
            //   85f6                 | test                esi, esi
            //   7411                 | je                  0x13
            //   8b8d4cffffff         | mov                 ecx, dword ptr [ebp - 0xb4]
            //   6a00                 | push                0
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_4 = { 53 56 8b7510 57 8bf9 8b5714 8bc2 }
            // n = 7, score = 100
            //   53                   | push                ebx
            //   56                   | push                esi
            //   8b7510               | mov                 esi, dword ptr [ebp + 0x10]
            //   57                   | push                edi
            //   8bf9                 | mov                 edi, ecx
            //   8b5714               | mov                 edx, dword ptr [edi + 0x14]
            //   8bc2                 | mov                 eax, edx

        $sequence_5 = { 8b854cf9ffff 89b5f4f8ffff c7461000000000 c7461400000000 898d1cf9ffff 83f808 7310 }
            // n = 7, score = 100
            //   8b854cf9ffff         | mov                 eax, dword ptr [ebp - 0x6b4]
            //   89b5f4f8ffff         | mov                 dword ptr [ebp - 0x70c], esi
            //   c7461000000000       | mov                 dword ptr [esi + 0x10], 0
            //   c7461400000000       | mov                 dword ptr [esi + 0x14], 0
            //   898d1cf9ffff         | mov                 dword ptr [ebp - 0x6e4], ecx
            //   83f808               | cmp                 eax, 8
            //   7310                 | jae                 0x12

        $sequence_6 = { 8bf1 8975d4 8975d4 6a00 c745fc00000000 8d4508 837d1c10 }
            // n = 7, score = 100
            //   8bf1                 | mov                 esi, ecx
            //   8975d4               | mov                 dword ptr [ebp - 0x2c], esi
            //   8975d4               | mov                 dword ptr [ebp - 0x2c], esi
            //   6a00                 | push                0
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   8d4508               | lea                 eax, [ebp + 8]
            //   837d1c10             | cmp                 dword ptr [ebp + 0x1c], 0x10

        $sequence_7 = { e8???????? 83c404 83bd1cfdffff00 8b8518fdffff 7704 85c0 7409 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   83bd1cfdffff00       | cmp                 dword ptr [ebp - 0x2e4], 0
            //   8b8518fdffff         | mov                 eax, dword ptr [ebp - 0x2e8]
            //   7704                 | ja                  6
            //   85c0                 | test                eax, eax
            //   7409                 | je                  0xb

        $sequence_8 = { 50 8d45cc c645fc06 50 8d4de8 e8???????? 8bc8 }
            // n = 7, score = 100
            //   50                   | push                eax
            //   8d45cc               | lea                 eax, [ebp - 0x34]
            //   c645fc06             | mov                 byte ptr [ebp - 4], 6
            //   50                   | push                eax
            //   8d4de8               | lea                 ecx, [ebp - 0x18]
            //   e8????????           |                     
            //   8bc8                 | mov                 ecx, eax

        $sequence_9 = { 8975a8 c745ac0f000000 884598 c645fc08 39b544ffffff 0f84f2080000 a1???????? }
            // n = 7, score = 100
            //   8975a8               | mov                 dword ptr [ebp - 0x58], esi
            //   c745ac0f000000       | mov                 dword ptr [ebp - 0x54], 0xf
            //   884598               | mov                 byte ptr [ebp - 0x68], al
            //   c645fc08             | mov                 byte ptr [ebp - 4], 8
            //   39b544ffffff         | cmp                 dword ptr [ebp - 0xbc], esi
            //   0f84f2080000         | je                  0x8f8
            //   a1????????           |                     

    condition:
        7 of them and filesize < 785408
}