rule win_http_troy_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.http_troy."
        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.http_troy"
        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 = { 7564 dd4510 51 51 dd1c24 e8???????? dd4510 }
            // n = 7, score = 200
            //   7564                 | jne                 0x66
            //   dd4510               | fld                 qword ptr [ebp + 0x10]
            //   51                   | push                ecx
            //   51                   | push                ecx
            //   dd1c24               | fstp                qword ptr [esp]
            //   e8????????           |                     
            //   dd4510               | fld                 qword ptr [ebp + 0x10]

        $sequence_1 = { 8d4c2418 51 8d542430 52 56 e8???????? 83c410 }
            // n = 7, score = 200
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   51                   | push                ecx
            //   8d542430             | lea                 edx, [esp + 0x30]
            //   52                   | push                edx
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10

        $sequence_2 = { 837d0000 56 8bb424b8040000 c744241000000000 740d 83fe04 7408 }
            // n = 7, score = 200
            //   837d0000             | cmp                 dword ptr [ebp], 0
            //   56                   | push                esi
            //   8bb424b8040000       | mov                 esi, dword ptr [esp + 0x4b8]
            //   c744241000000000     | mov                 dword ptr [esp + 0x10], 0
            //   740d                 | je                  0xf
            //   83fe04               | cmp                 esi, 4
            //   7408                 | je                  0xa

        $sequence_3 = { e8???????? 8beb 83c33f 83c404 }
            // n = 4, score = 200
            //   e8????????           |                     
            //   8beb                 | mov                 ebp, ebx
            //   83c33f               | add                 ebx, 0x3f
            //   83c404               | add                 esp, 4

        $sequence_4 = { e8???????? 50 8d4c3410 68???????? 51 e8???????? 8d542418 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   50                   | push                eax
            //   8d4c3410             | lea                 ecx, [esp + esi + 0x10]
            //   68????????           |                     
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8d542418             | lea                 edx, [esp + 0x18]

        $sequence_5 = { 8b8c2434040000 b864000000 e8???????? 5f 5e 5b 8be5 }
            // n = 7, score = 200
            //   8b8c2434040000       | mov                 ecx, dword ptr [esp + 0x434]
            //   b864000000           | mov                 eax, 0x64
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5b                   | pop                 ebx
            //   8be5                 | mov                 esp, ebp

        $sequence_6 = { 68f4010000 50 8d4c2418 51 e8???????? 8d44241c 83c40c }
            // n = 7, score = 200
            //   68f4010000           | push                0x1f4
            //   50                   | push                eax
            //   8d4c2418             | lea                 ecx, [esp + 0x18]
            //   51                   | push                ecx
            //   e8????????           |                     
            //   8d44241c             | lea                 eax, [esp + 0x1c]
            //   83c40c               | add                 esp, 0xc

        $sequence_7 = { 8d442440 50 56 88542448 ffd7 8a4b0e 6a01 }
            // n = 7, score = 200
            //   8d442440             | lea                 eax, [esp + 0x40]
            //   50                   | push                eax
            //   56                   | push                esi
            //   88542448             | mov                 byte ptr [esp + 0x48], dl
            //   ffd7                 | call                edi
            //   8a4b0e               | mov                 cl, byte ptr [ebx + 0xe]
            //   6a01                 | push                1

        $sequence_8 = { 83c408 8bf0 8d5001 8a08 40 84c9 }
            // n = 6, score = 200
            //   83c408               | add                 esp, 8
            //   8bf0                 | mov                 esi, eax
            //   8d5001               | lea                 edx, [eax + 1]
            //   8a08                 | mov                 cl, byte ptr [eax]
            //   40                   | inc                 eax
            //   84c9                 | test                cl, cl

        $sequence_9 = { 6a12 e8???????? 83c424 eb1b 50 51 51 }
            // n = 7, score = 200
            //   6a12                 | push                0x12
            //   e8????????           |                     
            //   83c424               | add                 esp, 0x24
            //   eb1b                 | jmp                 0x1d
            //   50                   | push                eax
            //   51                   | push                ecx
            //   51                   | push                ecx

    condition:
        7 of them and filesize < 475136
}