rule win_slave_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.slave."
        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.slave"
        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 = { 03d1 8bc7 0355fc 8bcf c1c007 c1c90b 33c8 }
            // n = 7, score = 300
            //   03d1                 | add                 edx, ecx
            //   8bc7                 | mov                 eax, edi
            //   0355fc               | add                 edx, dword ptr [ebp - 4]
            //   8bcf                 | mov                 ecx, edi
            //   c1c007               | rol                 eax, 7
            //   c1c90b               | ror                 ecx, 0xb
            //   33c8                 | xor                 ecx, eax

        $sequence_1 = { 57 ff15???????? 85c0 7456 8b5dd4 8d642400 ff15???????? }
            // n = 7, score = 300
            //   57                   | push                edi
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7456                 | je                  0x58
            //   8b5dd4               | mov                 ebx, dword ptr [ebp - 0x2c]
            //   8d642400             | lea                 esp, [esp]
            //   ff15????????         |                     

        $sequence_2 = { 6a00 50 660f134580 e8???????? 83c40c 8d4580 8bcf }
            // n = 7, score = 300
            //   6a00                 | push                0
            //   50                   | push                eax
            //   660f134580           | movlpd              qword ptr [ebp - 0x80], xmm0
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8d4580               | lea                 eax, [ebp - 0x80]
            //   8bcf                 | mov                 ecx, edi

        $sequence_3 = { 722f 80f9ff 7319 0fb6c1 ba00010000 2bd0 0fb78610030000 }
            // n = 7, score = 300
            //   722f                 | jb                  0x31
            //   80f9ff               | cmp                 cl, 0xff
            //   7319                 | jae                 0x1b
            //   0fb6c1               | movzx               eax, cl
            //   ba00010000           | mov                 edx, 0x100
            //   2bd0                 | sub                 edx, eax
            //   0fb78610030000       | movzx               eax, word ptr [esi + 0x310]

        $sequence_4 = { 50 ff15???????? 83c40c 008608010000 85db 743b 8a9608010000 }
            // n = 7, score = 300
            //   50                   | push                eax
            //   ff15????????         |                     
            //   83c40c               | add                 esp, 0xc
            //   008608010000         | add                 byte ptr [esi + 0x108], al
            //   85db                 | test                ebx, ebx
            //   743b                 | je                  0x3d
            //   8a9608010000         | mov                 dl, byte ptr [esi + 0x108]

        $sequence_5 = { c1c20f 33d0 8bc3 8b5d9c 8bcb c1e80a 33d0 }
            // n = 7, score = 300
            //   c1c20f               | rol                 edx, 0xf
            //   33d0                 | xor                 edx, eax
            //   8bc3                 | mov                 eax, ebx
            //   8b5d9c               | mov                 ebx, dword ptr [ebp - 0x64]
            //   8bcb                 | mov                 ecx, ebx
            //   c1e80a               | shr                 eax, 0xa
            //   33d0                 | xor                 edx, eax

        $sequence_6 = { 8b5dd8 03d1 8bc7 0355a8 8bcf c1c007 c1c90b }
            // n = 7, score = 300
            //   8b5dd8               | mov                 ebx, dword ptr [ebp - 0x28]
            //   03d1                 | add                 edx, ecx
            //   8bc7                 | mov                 eax, edi
            //   0355a8               | add                 edx, dword ptr [ebp - 0x58]
            //   8bcf                 | mov                 ecx, edi
            //   c1c007               | rol                 eax, 7
            //   c1c90b               | ror                 ecx, 0xb

        $sequence_7 = { 56 57 6aff ff35???????? 8bfa 8bd9 ff15???????? }
            // n = 7, score = 300
            //   56                   | push                esi
            //   57                   | push                edi
            //   6aff                 | push                -1
            //   ff35????????         |                     
            //   8bfa                 | mov                 edi, edx
            //   8bd9                 | mov                 ebx, ecx
            //   ff15????????         |                     

        $sequence_8 = { 895de8 ff15???????? 85c0 0f84df010000 53 ff15???????? }
            // n = 6, score = 300
            //   895de8               | mov                 dword ptr [ebp - 0x18], ebx
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   0f84df010000         | je                  0x1e5
            //   53                   | push                ebx
            //   ff15????????         |                     

        $sequence_9 = { 83f801 7562 8b7df0 8d9b00000000 6a01 6a00 6a00 }
            // n = 7, score = 300
            //   83f801               | cmp                 eax, 1
            //   7562                 | jne                 0x64
            //   8b7df0               | mov                 edi, dword ptr [ebp - 0x10]
            //   8d9b00000000         | lea                 ebx, [ebx]
            //   6a01                 | push                1
            //   6a00                 | push                0
            //   6a00                 | push                0

    condition:
        7 of them and filesize < 532480
}