rule win_explosive_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.explosive_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.explosive_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 = { 894514 8d45b8 50 8bcb e8???????? 8b4538 3b4514 }
            // n = 7, score = 100
            //   894514               | mov                 dword ptr [ebp + 0x14], eax
            //   8d45b8               | lea                 eax, [ebp - 0x48]
            //   50                   | push                eax
            //   8bcb                 | mov                 ecx, ebx
            //   e8????????           |                     
            //   8b4538               | mov                 eax, dword ptr [ebp + 0x38]
            //   3b4514               | cmp                 eax, dword ptr [ebp + 0x14]

        $sequence_1 = { 99 2bc2 8be8 d1fd 83fd01 7c1b 55 }
            // n = 7, score = 100
            //   99                   | cdq                 
            //   2bc2                 | sub                 eax, edx
            //   8be8                 | mov                 ebp, eax
            //   d1fd                 | sar                 ebp, 1
            //   83fd01               | cmp                 ebp, 1
            //   7c1b                 | jl                  0x1d
            //   55                   | push                ebp

        $sequence_2 = { 4e 75ef 837d3c08 8b7528 7303 8d7528 837d3800 }
            // n = 7, score = 100
            //   4e                   | dec                 esi
            //   75ef                 | jne                 0xfffffff1
            //   837d3c08             | cmp                 dword ptr [ebp + 0x3c], 8
            //   8b7528               | mov                 esi, dword ptr [ebp + 0x28]
            //   7303                 | jae                 5
            //   8d7528               | lea                 esi, [ebp + 0x28]
            //   837d3800             | cmp                 dword ptr [ebp + 0x38], 0

        $sequence_3 = { 7507 8bce e8???????? 8a4606 2a4508 0430 8807 }
            // n = 7, score = 100
            //   7507                 | jne                 9
            //   8bce                 | mov                 ecx, esi
            //   e8????????           |                     
            //   8a4606               | mov                 al, byte ptr [esi + 6]
            //   2a4508               | sub                 al, byte ptr [ebp + 8]
            //   0430                 | add                 al, 0x30
            //   8807                 | mov                 byte ptr [edi], al

        $sequence_4 = { 7205 8b7004 eb03 8d7004 83ec1c 8bcc 68???????? }
            // n = 7, score = 100
            //   7205                 | jb                  7
            //   8b7004               | mov                 esi, dword ptr [eax + 4]
            //   eb03                 | jmp                 5
            //   8d7004               | lea                 esi, [eax + 4]
            //   83ec1c               | sub                 esp, 0x1c
            //   8bcc                 | mov                 ecx, esp
            //   68????????           |                     

        $sequence_5 = { 4d 898c9670af0200 8b9684af0600 894c2410 8b8e7caf0600 89948e70af0400 75a4 }
            // n = 7, score = 100
            //   4d                   | dec                 ebp
            //   898c9670af0200       | mov                 dword ptr [esi + edx*4 + 0x2af70], ecx
            //   8b9684af0600         | mov                 edx, dword ptr [esi + 0x6af84]
            //   894c2410             | mov                 dword ptr [esp + 0x10], ecx
            //   8b8e7caf0600         | mov                 ecx, dword ptr [esi + 0x6af7c]
            //   89948e70af0400       | mov                 dword ptr [esi + ecx*4 + 0x4af70], edx
            //   75a4                 | jne                 0xffffffa6

        $sequence_6 = { 83ec1c 8bcc 68???????? e8???????? 8d8574f5feff 50 e8???????? }
            // n = 7, score = 100
            //   83ec1c               | sub                 esp, 0x1c
            //   8bcc                 | mov                 ecx, esp
            //   68????????           |                     
            //   e8????????           |                     
            //   8d8574f5feff         | lea                 eax, [ebp - 0x10a8c]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_7 = { 8bbc2450420000 c644244000 8b442410 85c0 0f84c4000000 33f6 }
            // n = 6, score = 100
            //   8bbc2450420000       | mov                 edi, dword ptr [esp + 0x4250]
            //   c644244000           | mov                 byte ptr [esp + 0x40], 0
            //   8b442410             | mov                 eax, dword ptr [esp + 0x10]
            //   85c0                 | test                eax, eax
            //   0f84c4000000         | je                  0xca
            //   33f6                 | xor                 esi, esi

        $sequence_8 = { 68???????? ba???????? e8???????? 8b1d???????? 6a00 68???????? ba???????? }
            // n = 7, score = 100
            //   68????????           |                     
            //   ba????????           |                     
            //   e8????????           |                     
            //   8b1d????????         |                     
            //   6a00                 | push                0
            //   68????????           |                     
            //   ba????????           |                     

        $sequence_9 = { 8dbe40010000 57 6804010000 ff15???????? 8bc7 8d5001 8a08 }
            // n = 7, score = 100
            //   8dbe40010000         | lea                 edi, [esi + 0x140]
            //   57                   | push                edi
            //   6804010000           | push                0x104
            //   ff15????????         |                     
            //   8bc7                 | mov                 eax, edi
            //   8d5001               | lea                 edx, [eax + 1]
            //   8a08                 | mov                 cl, byte ptr [eax]

    condition:
        7 of them and filesize < 855040
}