rule win_action_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.action_rat."
        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.action_rat"
        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 = { 83c404 50 8d4d90 e8???????? 8d8550feffff 50 e8???????? }
            // n = 7, score = 100
            //   83c404               | add                 esp, 4
            //   50                   | push                eax
            //   8d4d90               | lea                 ecx, [ebp - 0x70]
            //   e8????????           |                     
            //   8d8550feffff         | lea                 eax, [ebp - 0x1b0]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_1 = { 03f8 3bf7 7406 c645fa01 eb65 8b55f4 0fbf4224 }
            // n = 7, score = 100
            //   03f8                 | add                 edi, eax
            //   3bf7                 | cmp                 esi, edi
            //   7406                 | je                  8
            //   c645fa01             | mov                 byte ptr [ebp - 6], 1
            //   eb65                 | jmp                 0x67
            //   8b55f4               | mov                 edx, dword ptr [ebp - 0xc]
            //   0fbf4224             | movsx               eax, word ptr [edx + 0x24]

        $sequence_2 = { 52 8b45dc 50 8b4dd8 51 8b4de4 e8???????? }
            // n = 7, score = 100
            //   52                   | push                edx
            //   8b45dc               | mov                 eax, dword ptr [ebp - 0x24]
            //   50                   | push                eax
            //   8b4dd8               | mov                 ecx, dword ptr [ebp - 0x28]
            //   51                   | push                ecx
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   e8????????           |                     

        $sequence_3 = { 894df0 8b4df0 ff15???????? c745fc00000000 8b45f0 c700???????? 8b4df0 }
            // n = 7, score = 100
            //   894df0               | mov                 dword ptr [ebp - 0x10], ecx
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   ff15????????         |                     
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   8b45f0               | mov                 eax, dword ptr [ebp - 0x10]
            //   c700????????         |                     
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]

        $sequence_4 = { e8???????? 8b5508 52 8b45f8 50 8b4dec e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   52                   | push                edx
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]
            //   50                   | push                eax
            //   8b4dec               | mov                 ecx, dword ptr [ebp - 0x14]
            //   e8????????           |                     

        $sequence_5 = { 8b4d08 81c1e0010000 51 8b4dfc 81c1e0010000 e8???????? }
            // n = 6, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   81c1e0010000         | add                 ecx, 0x1e0
            //   51                   | push                ecx
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   81c1e0010000         | add                 ecx, 0x1e0
            //   e8????????           |                     

        $sequence_6 = { e8???????? 8a8587fdffff 888586fdffff c645fc00 8d8d88fdffff e8???????? c745fcffffffff }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8a8587fdffff         | mov                 al, byte ptr [ebp - 0x279]
            //   888586fdffff         | mov                 byte ptr [ebp - 0x27a], al
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   8d8d88fdffff         | lea                 ecx, [ebp - 0x278]
            //   e8????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff

        $sequence_7 = { 8982fc000000 8b4df0 33d2 33c0 899100010000 898104010000 8b4df0 }
            // n = 7, score = 100
            //   8982fc000000         | mov                 dword ptr [edx + 0xfc], eax
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   33d2                 | xor                 edx, edx
            //   33c0                 | xor                 eax, eax
            //   899100010000         | mov                 dword ptr [ecx + 0x100], edx
            //   898104010000         | mov                 dword ptr [ecx + 0x104], eax
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]

        $sequence_8 = { 8855d6 8b4d10 e8???????? 50 8b4dd8 }
            // n = 5, score = 100
            //   8855d6               | mov                 byte ptr [ebp - 0x2a], dl
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   e8????????           |                     
            //   50                   | push                eax
            //   8b4dd8               | mov                 ecx, dword ptr [ebp - 0x28]

        $sequence_9 = { 83c44c 8945f4 8b45f4 8be5 5d c20400 55 }
            // n = 7, score = 100
            //   83c44c               | add                 esp, 0x4c
            //   8945f4               | mov                 dword ptr [ebp - 0xc], eax
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c20400               | ret                 4
            //   55                   | push                ebp

    condition:
        7 of them and filesize < 480256
}