rule win_roll_sling_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.roll_sling."
        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.roll_sling"
        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 = { 488d15db6c0100 488d4c2420 e8???????? cc 48895c2410 4889742418 57 }
            // n = 7, score = 100
            //   488d15db6c0100       | arpl                ax, si
            //   488d4c2420           | dec                 eax
            //   e8????????           |                     
            //   cc                   | add                 esi, edi
            //   48895c2410           | movzx               eax, byte ptr [edi]
            //   4889742418           | dec                 ecx
            //   57                   | mov                 edx, ebp

        $sequence_1 = { 4d8be1 498be8 4c8bea 498b84ff90f20100 4983ceff 493bc6 0f84ea000000 }
            // n = 7, score = 100
            //   4d8be1               | pop                 edi
            //   498be8               | ret                 
            //   4c8bea               | dec                 eax
            //   498b84ff90f20100     | mov                 dword ptr [esp + 8], edi
            //   4983ceff             | dec                 eax
            //   493bc6               | lea                 edi, [0x11ffc]
            //   0f84ea000000         | dec                 eax

        $sequence_2 = { 8b84865cf50000 4803c6 ffe0 660f73d901 eb60 660f73d902 }
            // n = 6, score = 100
            //   8b84865cf50000       | je                  0xdf
            //   4803c6               | dec                 eax
            //   ffe0                 | lea                 eax, [0x64e8]
            //   660f73d901           | dec                 eax
            //   eb60                 | cmp                 ecx, eax
            //   660f73d902           | je                  0xdf

        $sequence_3 = { 4c8d6fff 4883fa01 b80d000000 41bf0a000000 440f44f8 33db }
            // n = 6, score = 100
            //   4c8d6fff             | lea                 edx, [esp + 0x40]
            //   4883fa01             | inc                 ecx
            //   b80d000000           | mov                 eax, 0x104
            //   41bf0a000000         | test                eax, eax
            //   440f44f8             | je                  0x1b5d
            //   33db                 | dec                 eax

        $sequence_4 = { 44397718 7e2d 498bde 6690 488b4f10 488b040b 4885c0 }
            // n = 7, score = 100
            //   44397718             | jne                 0x162
            //   7e2d                 | inc                 ecx
            //   498bde               | mov                 eax, esi
            //   6690                 | dec                 eax
            //   488b4f10             | mov                 esi, dword ptr [edi + 8]
            //   488b040b             | inc                 esp
            //   4885c0               | mov                 ebx, dword ptr [ecx + 0xb0]

        $sequence_5 = { 488d4c2438 e8???????? 41b808000000 488bd0 488d4c2458 e8???????? }
            // n = 6, score = 100
            //   488d4c2438           | je                  0x178f
            //   e8????????           |                     
            //   41b808000000         | xor                 ebx, ebx
            //   488bd0               | dec                 esp
            //   488d4c2458           | lea                 edi, [0xffff051f]
            //   e8????????           |                     

        $sequence_6 = { 4c8bea 4b8b8cfe90f70100 4c8b15???????? 4883cfff 418bc2 }
            // n = 5, score = 100
            //   4c8bea               | mov                 edx, dword ptr [ebp + 0x10]
            //   4b8b8cfe90f70100     | jns                 0x22d
            //   4c8b15????????       |                     
            //   4883cfff             | dec                 esp
            //   418bc2               | mov                 ebp, dword ptr [ebp - 0x40]

        $sequence_7 = { 0fb60a 83e10f 4a0fbe841940340100 428a8c1950340100 482bd0 8b42fc d3e8 }
            // n = 7, score = 100
            //   0fb60a               | mov                 edx, 0x890
            //   83e10f               | dec                 eax
            //   4a0fbe841940340100     | mov    ecx, ebp
            //   428a8c1950340100     | dec                 ebp
            //   482bd0               | mov                 ecx, esp
            //   8b42fc               | dec                 esp
            //   d3e8                 | mov                 eax, edi

        $sequence_8 = { 4883c0f8 4883f81f 0f87ee040000 e8???????? 488b0d???????? 488b15???????? }
            // n = 6, score = 100
            //   4883c0f8             | mov                 eax, 0x10
            //   4883f81f             | dec                 eax
            //   0f87ee040000         | lea                 edx, [0x1749a]
            //   e8????????           |                     
            //   488b0d????????       |                     
            //   488b15????????       |                     

        $sequence_9 = { 488bd9 488d1583820000 b916000000 4c8d056f820000 }
            // n = 4, score = 100
            //   488bd9               | mov                 byte ptr [eax], bh
            //   488d1583820000       | dec                 eax
            //   b916000000           | cmp                 dword ptr [esp + 0x48], 0x10
            //   4c8d056f820000       | dec                 eax

    condition:
        7 of them and filesize < 299008
}