rule win_parasite_http_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.parasite_http."
        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.parasite_http"
        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 = { 898424ac000000 8b4534 898424a0000000 899c24a4000000 e8???????? 33d2 }
            // n = 6, score = 100
            //   898424ac000000       | mov                 dword ptr [esp + 0xac], eax
            //   8b4534               | mov                 eax, dword ptr [ebp + 0x34]
            //   898424a0000000       | mov                 dword ptr [esp + 0xa0], eax
            //   899c24a4000000       | mov                 dword ptr [esp + 0xa4], ebx
            //   e8????????           |                     
            //   33d2                 | xor                 edx, edx

        $sequence_1 = { c745e85a154000 c745ec6e154000 e8???????? 6a0c 8d45f4 50 8d4598 }
            // n = 7, score = 100
            //   c745e85a154000       | mov                 dword ptr [ebp - 0x18], 0x40155a
            //   c745ec6e154000       | mov                 dword ptr [ebp - 0x14], 0x40156e
            //   e8????????           |                     
            //   6a0c                 | push                0xc
            //   8d45f4               | lea                 eax, [ebp - 0xc]
            //   50                   | push                eax
            //   8d4598               | lea                 eax, [ebp - 0x68]

        $sequence_2 = { 884df2 8d4dbc 66895dbe 668955c0 66895dc4 668945ce 66c745ec5669 }
            // n = 7, score = 100
            //   884df2               | mov                 byte ptr [ebp - 0xe], cl
            //   8d4dbc               | lea                 ecx, [ebp - 0x44]
            //   66895dbe             | mov                 word ptr [ebp - 0x42], bx
            //   668955c0             | mov                 word ptr [ebp - 0x40], dx
            //   66895dc4             | mov                 word ptr [ebp - 0x3c], bx
            //   668945ce             | mov                 word ptr [ebp - 0x32], ax
            //   66c745ec5669         | mov                 word ptr [ebp - 0x14], 0x6956

        $sequence_3 = { 8b4508 85c0 74e3 2bca 53 8a1c11 8a3a }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   85c0                 | test                eax, eax
            //   74e3                 | je                  0xffffffe5
            //   2bca                 | sub                 ecx, edx
            //   53                   | push                ebx
            //   8a1c11               | mov                 bl, byte ptr [ecx + edx]
            //   8a3a                 | mov                 bh, byte ptr [edx]

        $sequence_4 = { 895dfc 53 53 8d5001 e8???????? 8b4dfc }
            // n = 6, score = 100
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   8d5001               | lea                 edx, [eax + 1]
            //   e8????????           |                     
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]

        $sequence_5 = { 8bc1 c3 55 8bec 3bca }
            // n = 5, score = 100
            //   8bc1                 | mov                 eax, ecx
            //   c3                   | ret                 
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   3bca                 | cmp                 ecx, edx

        $sequence_6 = { e8???????? 8bd6 8bc8 e8???????? 53 8d8da4fbffff }
            // n = 6, score = 100
            //   e8????????           |                     
            //   8bd6                 | mov                 edx, esi
            //   8bc8                 | mov                 ecx, eax
            //   e8????????           |                     
            //   53                   | push                ebx
            //   8d8da4fbffff         | lea                 ecx, [ebp - 0x45c]

        $sequence_7 = { 663bc1 753d 0fb74614 8d5618 0fb77606 03d0 3b7a14 }
            // n = 7, score = 100
            //   663bc1               | cmp                 ax, cx
            //   753d                 | jne                 0x3f
            //   0fb74614             | movzx               eax, word ptr [esi + 0x14]
            //   8d5618               | lea                 edx, [esi + 0x18]
            //   0fb77606             | movzx               esi, word ptr [esi + 6]
            //   03d0                 | add                 edx, eax
            //   3b7a14               | cmp                 edi, dword ptr [edx + 0x14]

        $sequence_8 = { 5f 1bc0 23450c 5e 5b 5d }
            // n = 6, score = 100
            //   5f                   | pop                 edi
            //   1bc0                 | sbb                 eax, eax
            //   23450c               | and                 eax, dword ptr [ebp + 0xc]
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   5d                   | pop                 ebp

        $sequence_9 = { 6800300000 ba00400000 33c9 e8???????? 6a04 6800302000 }
            // n = 6, score = 100
            //   6800300000           | push                0x3000
            //   ba00400000           | mov                 edx, 0x4000
            //   33c9                 | xor                 ecx, ecx
            //   e8????????           |                     
            //   6a04                 | push                4
            //   6800302000           | push                0x203000

    condition:
        7 of them and filesize < 147456
}