rule win_neteagle_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.neteagle."
        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.neteagle"
        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 = { c684244002000002 e8???????? 8d4c2420 8bf8 c684243802000001 e8???????? ff15???????? }
            // n = 7, score = 100
            //   c684244002000002     | mov                 byte ptr [esp + 0x240], 2
            //   e8????????           |                     
            //   8d4c2420             | lea                 ecx, [esp + 0x20]
            //   8bf8                 | mov                 edi, eax
            //   c684243802000001     | mov                 byte ptr [esp + 0x238], 1
            //   e8????????           |                     
            //   ff15????????         |                     

        $sequence_1 = { 83c41c 6a01 53 53 53 6a01 6a02 }
            // n = 7, score = 100
            //   83c41c               | add                 esp, 0x1c
            //   6a01                 | push                1
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   6a01                 | push                1
            //   6a02                 | push                2

        $sequence_2 = { 898dacfcffff 8b4208 8985b0fcffff 8b4a0c }
            // n = 4, score = 100
            //   898dacfcffff         | mov                 dword ptr [ebp - 0x354], ecx
            //   8b4208               | mov                 eax, dword ptr [edx + 8]
            //   8985b0fcffff         | mov                 dword ptr [ebp - 0x350], eax
            //   8b4a0c               | mov                 ecx, dword ptr [edx + 0xc]

        $sequence_3 = { 8d7c2438 8b542410 f3ab 66ab 8b442414 8d4c2438 51 }
            // n = 7, score = 100
            //   8d7c2438             | lea                 edi, [esp + 0x38]
            //   8b542410             | mov                 edx, dword ptr [esp + 0x10]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   8d4c2438             | lea                 ecx, [esp + 0x38]
            //   51                   | push                ecx

        $sequence_4 = { 50 64892500000000 53 56 57 8b5c2424 }
            // n = 6, score = 100
            //   50                   | push                eax
            //   64892500000000       | mov                 dword ptr fs:[0], esp
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi
            //   8b5c2424             | mov                 ebx, dword ptr [esp + 0x24]

        $sequence_5 = { 8b7500 8bc2 8a18 8acb 3a1e 0f8581040000 }
            // n = 6, score = 100
            //   8b7500               | mov                 esi, dword ptr [ebp]
            //   8bc2                 | mov                 eax, edx
            //   8a18                 | mov                 bl, byte ptr [eax]
            //   8acb                 | mov                 cl, bl
            //   3a1e                 | cmp                 bl, byte ptr [esi]
            //   0f8581040000         | jne                 0x487

        $sequence_6 = { 8d7598 33c0 f3a6 7404 1bc0 1bc3 }
            // n = 6, score = 100
            //   8d7598               | lea                 esi, [ebp - 0x68]
            //   33c0                 | xor                 eax, eax
            //   f3a6                 | repe cmpsb          byte ptr [esi], byte ptr es:[edi]
            //   7404                 | je                  6
            //   1bc0                 | sbb                 eax, eax
            //   1bc3                 | sbb                 eax, ebx

        $sequence_7 = { 84c0 75dc 33c0 eb04 1bc0 1bc5 }
            // n = 6, score = 100
            //   84c0                 | test                al, al
            //   75dc                 | jne                 0xffffffde
            //   33c0                 | xor                 eax, eax
            //   eb04                 | jmp                 6
            //   1bc0                 | sbb                 eax, eax
            //   1bc5                 | sbb                 eax, ebp

        $sequence_8 = { e8???????? 8b442414 40 83f85b 89442414 0f8c16feffff }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8b442414             | mov                 eax, dword ptr [esp + 0x14]
            //   40                   | inc                 eax
            //   83f85b               | cmp                 eax, 0x5b
            //   89442414             | mov                 dword ptr [esp + 0x14], eax
            //   0f8c16feffff         | jl                  0xfffffe1c

        $sequence_9 = { 8d4e30 c684241002000004 e8???????? 8d4e34 c684241002000005 e8???????? 8d4e38 }
            // n = 7, score = 100
            //   8d4e30               | lea                 ecx, [esi + 0x30]
            //   c684241002000004     | mov                 byte ptr [esp + 0x210], 4
            //   e8????????           |                     
            //   8d4e34               | lea                 ecx, [esi + 0x34]
            //   c684241002000005     | mov                 byte ptr [esp + 0x210], 5
            //   e8????????           |                     
            //   8d4e38               | lea                 ecx, [esi + 0x38]

    condition:
        7 of them and filesize < 262144
}