rule win_explosive_rat_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 40 40 3b4d0c 75e5 3b4514 750d 33c0 }
            // n = 7, score = 100
            //   40                   | inc                 eax
            //   40                   | inc                 eax
            //   3b4d0c               | cmp                 ecx, dword ptr [ebp + 0xc]
            //   75e5                 | jne                 0xffffffe7
            //   3b4514               | cmp                 eax, dword ptr [ebp + 0x14]
            //   750d                 | jne                 0xf
            //   33c0                 | xor                 eax, eax

        $sequence_1 = { 83ec1c 8bcc 68???????? e8???????? 56 e8???????? }
            // n = 6, score = 100
            //   83ec1c               | sub                 esp, 0x1c
            //   8bcc                 | mov                 ecx, esp
            //   68????????           |                     
            //   e8????????           |                     
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_2 = { c20800 85f6 7525 83f808 897514 7214 8b6d04 }
            // n = 7, score = 100
            //   c20800               | ret                 8
            //   85f6                 | test                esi, esi
            //   7525                 | jne                 0x27
            //   83f808               | cmp                 eax, 8
            //   897514               | mov                 dword ptr [ebp + 0x14], esi
            //   7214                 | jb                  0x16
            //   8b6d04               | mov                 ebp, dword ptr [ebp + 4]

        $sequence_3 = { 8b4b28 6a04 50 51 ff5320 83c40c 85c0 }
            // n = 7, score = 100
            //   8b4b28               | mov                 ecx, dword ptr [ebx + 0x28]
            //   6a04                 | push                4
            //   50                   | push                eax
            //   51                   | push                ecx
            //   ff5320               | call                dword ptr [ebx + 0x20]
            //   83c40c               | add                 esp, 0xc
            //   85c0                 | test                eax, eax

        $sequence_4 = { 0fb6d9 40 f6834166460004 740c ff06 85ff }
            // n = 6, score = 100
            //   0fb6d9               | movzx               ebx, cl
            //   40                   | inc                 eax
            //   f6834166460004       | test                byte ptr [ebx + 0x466641], 4
            //   740c                 | je                  0xe
            //   ff06                 | inc                 dword ptr [esi]
            //   85ff                 | test                edi, edi

        $sequence_5 = { 8bcc 68???????? e8???????? e8???????? 83c41c 6689b5b0fbffff 668975b0 }
            // n = 7, score = 100
            //   8bcc                 | mov                 ecx, esp
            //   68????????           |                     
            //   e8????????           |                     
            //   e8????????           |                     
            //   83c41c               | add                 esp, 0x1c
            //   6689b5b0fbffff       | mov                 word ptr [ebp - 0x450], si
            //   668975b0             | mov                 word ptr [ebp - 0x50], si

        $sequence_6 = { 8b10 8b4004 8b5c2454 83c408 33f6 eb08 8b442464 }
            // n = 7, score = 100
            //   8b10                 | mov                 edx, dword ptr [eax]
            //   8b4004               | mov                 eax, dword ptr [eax + 4]
            //   8b5c2454             | mov                 ebx, dword ptr [esp + 0x54]
            //   83c408               | add                 esp, 8
            //   33f6                 | xor                 esi, esi
            //   eb08                 | jmp                 0xa
            //   8b442464             | mov                 eax, dword ptr [esp + 0x64]

        $sequence_7 = { 0f856a010000 85f6 0f85defcffff 8b442418 8b7578 03c2 39442458 }
            // n = 7, score = 100
            //   0f856a010000         | jne                 0x170
            //   85f6                 | test                esi, esi
            //   0f85defcffff         | jne                 0xfffffce4
            //   8b442418             | mov                 eax, dword ptr [esp + 0x18]
            //   8b7578               | mov                 esi, dword ptr [ebp + 0x78]
            //   03c2                 | add                 eax, edx
            //   39442458             | cmp                 dword ptr [esp + 0x58], eax

        $sequence_8 = { 33f6 eb5d 8b542460 8b44245c 8b7c2410 52 8b542458 }
            // n = 7, score = 100
            //   33f6                 | xor                 esi, esi
            //   eb5d                 | jmp                 0x5f
            //   8b542460             | mov                 edx, dword ptr [esp + 0x60]
            //   8b44245c             | mov                 eax, dword ptr [esp + 0x5c]
            //   8b7c2410             | mov                 edi, dword ptr [esp + 0x10]
            //   52                   | push                edx
            //   8b542458             | mov                 edx, dword ptr [esp + 0x58]

        $sequence_9 = { c60065 e8???????? ff7514 8bce c6450b00 33db e8???????? }
            // n = 7, score = 100
            //   c60065               | mov                 byte ptr [eax], 0x65
            //   e8????????           |                     
            //   ff7514               | push                dword ptr [ebp + 0x14]
            //   8bce                 | mov                 ecx, esi
            //   c6450b00             | mov                 byte ptr [ebp + 0xb], 0
            //   33db                 | xor                 ebx, ebx
            //   e8????????           |                     

    condition:
        7 of them and filesize < 855040
}