rule win_action_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "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 = { eb64 68???????? 8b4d0c 51 e8???????? }
            // n = 5, score = 100
            //   eb64                 | jmp                 0x66
            //   68????????           |                     
            //   8b4d0c               | mov                 ecx, dword ptr [ebp + 0xc]
            //   51                   | push                ecx
            //   e8????????           |                     

        $sequence_1 = { 0f8596010000 8d4dc8 e8???????? 0fb6c0 85c0 752d }
            // n = 6, score = 100
            //   0f8596010000         | jne                 0x19c
            //   8d4dc8               | lea                 ecx, [ebp - 0x38]
            //   e8????????           |                     
            //   0fb6c0               | movzx               eax, al
            //   85c0                 | test                eax, eax
            //   752d                 | jne                 0x2f

        $sequence_2 = { 7409 c745e800000000 eb0c 8b4dfc ff15???????? 8945e8 }
            // n = 6, score = 100
            //   7409                 | je                  0xb
            //   c745e800000000       | mov                 dword ptr [ebp - 0x18], 0
            //   eb0c                 | jmp                 0xe
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   ff15????????         |                     
            //   8945e8               | mov                 dword ptr [ebp - 0x18], eax

        $sequence_3 = { e8???????? 8945f8 8b4dfc 51 8b4df8 e8???????? 8d4dd0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   51                   | push                ecx
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   e8????????           |                     
            //   8d4dd0               | lea                 ecx, [ebp - 0x30]

        $sequence_4 = { 8d8de4f7ffff e8???????? 50 e8???????? 83c414 8985d4f7ffff 83bdd4f7ffff00 }
            // n = 7, score = 100
            //   8d8de4f7ffff         | lea                 ecx, [ebp - 0x81c]
            //   e8????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c414               | add                 esp, 0x14
            //   8985d4f7ffff         | mov                 dword ptr [ebp - 0x82c], eax
            //   83bdd4f7ffff00       | cmp                 dword ptr [ebp - 0x82c], 0

        $sequence_5 = { 7527 c645af00 c645fc00 8d4db8 e8???????? c745fcffffffff 8d4d0c }
            // n = 7, score = 100
            //   7527                 | jne                 0x29
            //   c645af00             | mov                 byte ptr [ebp - 0x51], 0
            //   c645fc00             | mov                 byte ptr [ebp - 4], 0
            //   8d4db8               | lea                 ecx, [ebp - 0x48]
            //   e8????????           |                     
            //   c745fcffffffff       | mov                 dword ptr [ebp - 4], 0xffffffff
            //   8d4d0c               | lea                 ecx, [ebp + 0xc]

        $sequence_6 = { 8bf4 8965f0 8b4d08 51 e8???????? 83c404 50 }
            // n = 7, score = 100
            //   8bf4                 | mov                 esi, esp
            //   8965f0               | mov                 dword ptr [ebp - 0x10], esp
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   50                   | push                eax

        $sequence_7 = { 8b4d08 8b11 8b4d08 034a04 ff15???????? 83e801 83da00 }
            // n = 7, score = 100
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   8b11                 | mov                 edx, dword ptr [ecx]
            //   8b4d08               | mov                 ecx, dword ptr [ebp + 8]
            //   034a04               | add                 ecx, dword ptr [edx + 4]
            //   ff15????????         |                     
            //   83e801               | sub                 eax, 1
            //   83da00               | sbb                 edx, 0

        $sequence_8 = { 7209 c745d803000000 eb0b 8b4df8 83e901 d1e9 894dd8 }
            // n = 7, score = 100
            //   7209                 | jb                  0xb
            //   c745d803000000       | mov                 dword ptr [ebp - 0x28], 3
            //   eb0b                 | jmp                 0xd
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   83e901               | sub                 ecx, 1
            //   d1e9                 | shr                 ecx, 1
            //   894dd8               | mov                 dword ptr [ebp - 0x28], ecx

        $sequence_9 = { 68c8000000 e8???????? 83c404 8945f0 c745fc00000000 837df000 7420 }
            // n = 7, score = 100
            //   68c8000000           | push                0xc8
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8945f0               | mov                 dword ptr [ebp - 0x10], eax
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   837df000             | cmp                 dword ptr [ebp - 0x10], 0
            //   7420                 | je                  0x22

    condition:
        7 of them and filesize < 480256
}