rule win_slimagent_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.slimagent."
        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.slimagent"
        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 = { c3 e8???????? 90 895c2438 b906000000 e8???????? 90 }
            // n = 7, score = 100
            //   c3                   | and                 dword ptr [esp + 0x28], 0
            //   e8????????           |                     
            //   90                   | dec                 eax
            //   895c2438             | lea                 eax, [0xffffda93]
            //   b906000000           | dec                 eax
            //   e8????????           |                     
            //   90                   | mov                 dword ptr [esp + 0x30], eax

        $sequence_1 = { 6683e230 e9???????? 4c8b6d58 488d05da500100 33db 4c3be8 0f857b010000 }
            // n = 7, score = 100
            //   6683e230             | mov                 ecx, eax
            //   e9????????           |                     
            //   4c8b6d58             | inc                 ecx
            //   488d05da500100       | mov                 eax, ecx
            //   33db                 | xor                 ecx, edx
            //   4c3be8               | sub                 ecx, edx
            //   0f857b010000         | dec                 esp

        $sequence_2 = { 488d4c2420 e8???????? 488d15d7d70200 488d4c2420 e8???????? cc 4053 }
            // n = 7, score = 100
            //   488d4c2420           | mov                 dword ptr [esp + 0x30], eax
            //   e8????????           |                     
            //   488d15d7d70200       | jmp                 0xf4b
            //   488d4c2420           | dec                 eax
            //   e8????????           |                     
            //   cc                   | mov                 eax, dword ptr [ebx + 0x88]
            //   4053                 | dec                 eax

        $sequence_3 = { e8???????? 488d153ee10300 488d4c2440 e8???????? }
            // n = 4, score = 100
            //   e8????????           |                     
            //   488d153ee10300       | dec                 esp
            //   488d4c2440           | lea                 eax, [0x15c3b]
            //   e8????????           |                     

        $sequence_4 = { ba02000000 488d4d87 e8???????? 4c896c2440 4c896c2448 0f1000 0f11442430 }
            // n = 7, score = 100
            //   ba02000000           | test                al, al
            //   488d4d87             | jne                 0x3ba
            //   e8????????           |                     
            //   4c896c2440           | mov                 edx, dword ptr [edx + 0x28]
            //   4c896c2448           | dec                 eax
            //   0f1000               | lea                 eax, [0x23896]
            //   0f11442430           | xor                 ecx, ecx

        $sequence_5 = { 57 4883ec50 418bd9 498bf8 8bf2 4c8d0d9d030100 }
            // n = 6, score = 100
            //   57                   | dec                 ebx
            //   4883ec50             | mov                 eax, dword ptr [ebx + edx*8 + 0x55cb0]
            //   418bd9               | dec                 edx
            //   498bf8               | lea                 ecx, [eax + ecx*8]
            //   8bf2                 | mov                 al, byte ptr [edx + esi]
            //   4c8d0d9d030100       | mov                 byte ptr [ecx + edx + 0x3e], al

        $sequence_6 = { 488bd9 488901 488d05aabd0100 48894110 f6c201 740a ba90000000 }
            // n = 7, score = 100
            //   488bd9               | mov                 ecx, eax
            //   488901               | dec                 eax
            //   488d05aabd0100       | lea                 edx, [0x240b3]
            //   48894110             | dec                 eax
            //   f6c201               | mov                 ecx, eax
            //   740a                 | dec                 eax
            //   ba90000000           | mov                 ecx, ebx

        $sequence_7 = { 488d0593daffff 4889442430 488d4c2420 e8???????? b801000000 8705???????? 85c0 }
            // n = 7, score = 100
            //   488d0593daffff       | dec                 eax
            //   4889442430           | lea                 ecx, [ebp - 0x38]
            //   488d4c2420           | dec                 esp
            //   e8????????           |                     
            //   b801000000           | lea                 ecx, [ebp - 0x38]
            //   8705????????         |                     
            //   85c0                 | dec                 eax

        $sequence_8 = { 4883ec20 488d0587f50100 488bd9 488901 8b4118 25ffffff0f 83f803 }
            // n = 7, score = 100
            //   4883ec20             | test                esi, esi
            //   488d0587f50100       | dec                 eax
            //   488bd9               | cmp                 dword ptr [ebx + 0x18], 8
            //   488901               | jb                  0x255
            //   8b4118               | dec                 eax
            //   25ffffff0f           | mov                 eax, dword ptr [ebx]
            //   83f803               | dec                 eax

        $sequence_9 = { eb4b 488bf9 482bfa 4c8b45e0 498bc0 482bc2 483bf8 }
            // n = 7, score = 100
            //   eb4b                 | inc                 ecx
            //   488bf9               | mov                 eax, 7
            //   482bfa               | dec                 eax
            //   4c8b45e0             | lea                 edx, [0x45a31]
            //   498bc0               | dec                 eax
            //   482bc2               | lea                 ecx, [esp + 0x58]
            //   483bf8               | nop                 

    condition:
        7 of them and filesize < 769024
}