rule win_rhttpctrl_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.rhttpctrl."
        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.rhttpctrl"
        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 = { 52 c785d8feffff1c010000 898de4feffff c785e8feffff02000000 ffd6 6a01 6a08 }
            // n = 7, score = 100
            //   52                   | push                edx
            //   c785d8feffff1c010000     | mov    dword ptr [ebp - 0x128], 0x11c
            //   898de4feffff         | mov                 dword ptr [ebp - 0x11c], ecx
            //   c785e8feffff02000000     | mov    dword ptr [ebp - 0x118], 2
            //   ffd6                 | call                esi
            //   6a01                 | push                1
            //   6a08                 | push                8

        $sequence_1 = { 8d442434 50 e8???????? 83c408 85c0 7510 8b5c2444 }
            // n = 7, score = 100
            //   8d442434             | lea                 eax, [esp + 0x34]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   7510                 | jne                 0x12
            //   8b5c2444             | mov                 ebx, dword ptr [esp + 0x44]

        $sequence_2 = { e8???????? 83c40c 83c61d ffb5f0feffff ffb5ecfeffff 56 e8???????? }
            // n = 7, score = 100
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   83c61d               | add                 esi, 0x1d
            //   ffb5f0feffff         | push                dword ptr [ebp - 0x110]
            //   ffb5ecfeffff         | push                dword ptr [ebp - 0x114]
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_3 = { 85c9 7407 395004 7402 8811 8b4808 85c9 }
            // n = 7, score = 100
            //   85c9                 | test                ecx, ecx
            //   7407                 | je                  9
            //   395004               | cmp                 dword ptr [eax + 4], edx
            //   7402                 | je                  4
            //   8811                 | mov                 byte ptr [ecx], dl
            //   8b4808               | mov                 ecx, dword ptr [eax + 8]
            //   85c9                 | test                ecx, ecx

        $sequence_4 = { 6a00 6a00 8945ec 8b450c }
            // n = 4, score = 100
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   8b450c               | mov                 eax, dword ptr [ebp + 0xc]

        $sequence_5 = { 8d4704 56 51 50 8d7101 }
            // n = 5, score = 100
            //   8d4704               | lea                 eax, [edi + 4]
            //   56                   | push                esi
            //   51                   | push                ecx
            //   50                   | push                eax
            //   8d7101               | lea                 esi, [ecx + 1]

        $sequence_6 = { 84c0 740b 8937 46 81feffff0000 76e8 8b9dd0feffff }
            // n = 7, score = 100
            //   84c0                 | test                al, al
            //   740b                 | je                  0xd
            //   8937                 | mov                 dword ptr [edi], esi
            //   46                   | inc                 esi
            //   81feffff0000         | cmp                 esi, 0xffff
            //   76e8                 | jbe                 0xffffffea
            //   8b9dd0feffff         | mov                 ebx, dword ptr [ebp - 0x130]

        $sequence_7 = { ff5004 8b5704 83ea10 f00fc1720c 4e }
            // n = 5, score = 100
            //   ff5004               | call                dword ptr [eax + 4]
            //   8b5704               | mov                 edx, dword ptr [edi + 4]
            //   83ea10               | sub                 edx, 0x10
            //   f00fc1720c           | lock xadd           dword ptr [edx + 0xc], esi
            //   4e                   | dec                 esi

        $sequence_8 = { 740b 8937 46 81feffff0000 76e8 8b9dd0feffff }
            // n = 6, score = 100
            //   740b                 | je                  0xd
            //   8937                 | mov                 dword ptr [edi], esi
            //   46                   | inc                 esi
            //   81feffff0000         | cmp                 esi, 0xffff
            //   76e8                 | jbe                 0xffffffea
            //   8b9dd0feffff         | mov                 ebx, dword ptr [ebp - 0x130]

        $sequence_9 = { 8d85f0d7ffff 50 56 ffd3 }
            // n = 4, score = 100
            //   8d85f0d7ffff         | lea                 eax, [ebp - 0x2810]
            //   50                   | push                eax
            //   56                   | push                esi
            //   ffd3                 | call                ebx

    condition:
        7 of them and filesize < 339968
}