rule win_green_dispenser_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.green_dispenser."
        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.green_dispenser"
        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 = { 8bf1 33db 395e40 0f84ec000000 385e45 }
            // n = 5, score = 100
            //   8bf1                 | mov                 esi, ecx
            //   33db                 | xor                 ebx, ebx
            //   395e40               | cmp                 dword ptr [esi + 0x40], ebx
            //   0f84ec000000         | je                  0xf2
            //   385e45               | cmp                 byte ptr [esi + 0x45], bl

        $sequence_1 = { 8b55ec 85f6 7454 837f1410 8b4f10 }
            // n = 5, score = 100
            //   8b55ec               | mov                 edx, dword ptr [ebp - 0x14]
            //   85f6                 | test                esi, esi
            //   7454                 | je                  0x56
            //   837f1410             | cmp                 dword ptr [edi + 0x14], 0x10
            //   8b4f10               | mov                 ecx, dword ptr [edi + 0x10]

        $sequence_2 = { 85c0 0f8817010000 ff75f8 8b55fc 8bcf e8???????? }
            // n = 6, score = 100
            //   85c0                 | test                eax, eax
            //   0f8817010000         | js                  0x11d
            //   ff75f8               | push                dword ptr [ebp - 8]
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   8bcf                 | mov                 ecx, edi
            //   e8????????           |                     

        $sequence_3 = { 83ff02 0f95c0 85c0 0f94c0 84c0 0f85c0010000 83fb10 }
            // n = 7, score = 100
            //   83ff02               | cmp                 edi, 2
            //   0f95c0               | setne               al
            //   85c0                 | test                eax, eax
            //   0f94c0               | sete                al
            //   84c0                 | test                al, al
            //   0f85c0010000         | jne                 0x1c6
            //   83fb10               | cmp                 ebx, 0x10

        $sequence_4 = { c78694000000588a4200 c78698000000d88b4200 c7467401000000 33c0 8b4dfc 5e }
            // n = 6, score = 100
            //   c78694000000588a4200     | mov    dword ptr [esi + 0x94], 0x428a58
            //   c78698000000d88b4200     | mov    dword ptr [esi + 0x98], 0x428bd8
            //   c7467401000000       | mov                 dword ptr [esi + 0x74], 1
            //   33c0                 | xor                 eax, eax
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   5e                   | pop                 esi

        $sequence_5 = { e8???????? 8bf8 85ff 7505 5f 8be5 5d }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   85ff                 | test                edi, edi
            //   7505                 | jne                 7
            //   5f                   | pop                 edi
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp

        $sequence_6 = { 6a00 6891010000 50 ff15???????? 83f8d7 7524 ba???????? }
            // n = 7, score = 100
            //   6a00                 | push                0
            //   6891010000           | push                0x191
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83f8d7               | cmp                 eax, -0x29
            //   7524                 | jne                 0x26
            //   ba????????           |                     

        $sequence_7 = { 034204 5e c7421400000000 5b c3 0faffe 03fb }
            // n = 7, score = 100
            //   034204               | add                 eax, dword ptr [edx + 4]
            //   5e                   | pop                 esi
            //   c7421400000000       | mov                 dword ptr [edx + 0x14], 0
            //   5b                   | pop                 ebx
            //   c3                   | ret                 
            //   0faffe               | imul                edi, esi
            //   03fb                 | add                 edi, ebx

        $sequence_8 = { e8???????? 8bf8 83c404 85ff 780c 8b4df4 8bd3 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   83c404               | add                 esp, 4
            //   85ff                 | test                edi, edi
            //   780c                 | js                  0xe
            //   8b4df4               | mov                 ecx, dword ptr [ebp - 0xc]
            //   8bd3                 | mov                 edx, ebx

        $sequence_9 = { e8???????? 68???????? 8bd0 8d8d5cfcffff c645fc14 e8???????? 8d8d04fdffff }
            // n = 7, score = 100
            //   e8????????           |                     
            //   68????????           |                     
            //   8bd0                 | mov                 edx, eax
            //   8d8d5cfcffff         | lea                 ecx, [ebp - 0x3a4]
            //   c645fc14             | mov                 byte ptr [ebp - 4], 0x14
            //   e8????????           |                     
            //   8d8d04fdffff         | lea                 ecx, [ebp - 0x2fc]

    condition:
        7 of them and filesize < 838656
}