rule win_cargobay_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.cargobay."
        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.cargobay"
        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 = { 5e 415c 415d 415e 415f c3 488b8424e8010000 }
            // n = 7, score = 100
            //   5e                   | push                edi
            //   415c                 | push                ebx
            //   415d                 | dec                 eax
            //   415e                 | sub                 esp, 0x50
            //   415f                 | dec                 eax
            //   c3                   | mov                 esi, ecx
            //   488b8424e8010000     | dec                 esp

        $sequence_1 = { e8???????? 488b9c24b0000000 488b4308 0fb64808 48ffc9 4883f902 7304 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   488b9c24b0000000     | movups              xmm0, xmmword ptr [esp + 0x30]
            //   488b4308             | dec                 esp
            //   0fb64808             | mov                 esi, dword ptr [esp + 0x40]
            //   48ffc9               | movups              xmm1, xmmword ptr [esp + 0x50]
            //   4883f902             | dec                 eax
            //   7304                 | mov                 eax, dword ptr [ebx + 0x110]

        $sequence_2 = { 89ca 80e21f 0fb6d2 0fb67001 83e63f 80f9df 763c }
            // n = 7, score = 100
            //   89ca                 | shl                 ebp, 8
            //   80e21f               | dec                 eax
            //   0fb6d2               | or                  ebp, edi
            //   0fb67001             | dec                 eax
            //   83e63f               | shl                 esi, 0x10
            //   80f9df               | dec                 eax
            //   763c                 | or                  esi, ebp

        $sequence_3 = { e8???????? e9???????? 56 57 4883ec48 4889ce 488b4110 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   e9????????           |                     
            //   56                   | dec                 ecx
            //   57                   | mov                 eax, eax
            //   4883ec48             | dec                 ecx
            //   4889ce               | mov                 ebx, edx
            //   488b4110             | movzx               eax, byte ptr [eax]

        $sequence_4 = { e8???????? 4c8bbd90000000 488bbd98000000 4d89fe 4929fe 4d89f0 4929d8 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4c8bbd90000000       | mov                 ecx, esi
            //   488bbd98000000       | dec                 ecx
            //   4d89fe               | mov                 ecx, edx
            //   4929fe               | dec                 eax
            //   4d89f0               | mov                 ecx, esi
            //   4929d8               | dec                 eax

        $sequence_5 = { e9???????? b91f000000 31d2 e8???????? 0f1005???????? 0f1100 0f1005???????? }
            // n = 7, score = 100
            //   e9????????           |                     
            //   b91f000000           | mov                 edi, dword ptr [esp + 0x38]
            //   31d2                 | dec                 eax
            //   e8????????           |                     
            //   0f1005????????       |                     
            //   0f1100               | cmp                 edi, 1
            //   0f1005????????       |                     

        $sequence_6 = { 4c8d05cf070b00 488db42470020000 41b92c000000 4889f1 e8???????? 4889df 4883c710 }
            // n = 7, score = 100
            //   4c8d05cf070b00       | dec                 eax
            //   488db42470020000     | lea                 ecx, [ebx + 0x578]
            //   41b92c000000         | dec                 esp
            //   4889f1               | mov                 edx, edi
            //   e8????????           |                     
            //   4889df               | dec                 eax
            //   4883c710             | mov                 dword ptr [ebx + 0x560], esi

        $sequence_7 = { f6c101 755a 89d5 4c8bb42480000000 488bbc2488000000 4c39f7 7416 }
            // n = 7, score = 100
            //   f6c101               | lea                 eax, [0xdbb09]
            //   755a                 | jmp                 0x7d4
            //   89d5                 | dec                 eax
            //   4c8bb42480000000     | lea                 edx, [0xdb43d]
            //   488bbc2488000000     | dec                 eax
            //   4c39f7               | lea                 esi, [esp + 0x28]
            //   7416                 | inc                 ecx

        $sequence_8 = { e8???????? 4c8d05f3e20c00 ba0b000000 4889f9 e8???????? 4989d0 4489f9 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4c8d05f3e20c00       | mov                 eax, 0xe
            //   ba0b000000           | dec                 esp
            //   4889f9               | mov                 esp, dword ptr [esi]
            //   e8????????           |                     
            //   4989d0               | dec                 esp
            //   4489f9               | mov                 edi, dword ptr [esi + 0x10]

        $sequence_9 = { eb5e 41b800001c00 eb56 41b800001d00 eb4e 41b800001e00 eb46 }
            // n = 7, score = 100
            //   eb5e                 | setb                cl
            //   41b800001c00         | mov                 eax, 0x5f5e100
            //   eb56                 | inc                 ecx
            //   41b800001d00         | mov                 ebp, 0x3b9aca00
            //   eb4e                 | inc                 esp
            //   41b800001e00         | cmovb               ebp, eax
            //   eb46                 | xor                 cl, 9

    condition:
        7 of them and filesize < 3432448
}