rule win_banatrix_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.banatrix."
        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.banatrix"
        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 = { 85c0 74e3 8b5320 0345d0 }
            // n = 4, score = 200
            //   85c0                 | test                eax, eax
            //   74e3                 | je                  0xffffffe5
            //   8b5320               | mov                 edx, dword ptr [ebx + 0x20]
            //   0345d0               | add                 eax, dword ptr [ebp - 0x30]

        $sequence_1 = { 0fb706 3b4314 7798 8d0487 03431c 0338 89f8 }
            // n = 7, score = 200
            //   0fb706               | movzx               eax, word ptr [esi]
            //   3b4314               | cmp                 eax, dword ptr [ebx + 0x14]
            //   7798                 | ja                  0xffffff9a
            //   8d0487               | lea                 eax, [edi + eax*4]
            //   03431c               | add                 eax, dword ptr [ebx + 0x1c]
            //   0338                 | add                 edi, dword ptr [eax]
            //   89f8                 | mov                 eax, edi

        $sequence_2 = { 891c24 89442408 e8???????? 8b55c0 85c0 }
            // n = 5, score = 200
            //   891c24               | mov                 dword ptr [esp], ebx
            //   89442408             | mov                 dword ptr [esp + 8], eax
            //   e8????????           |                     
            //   8b55c0               | mov                 edx, dword ptr [ebp - 0x40]
            //   85c0                 | test                eax, eax

        $sequence_3 = { 8b55c4 8b4dc0 89c6 83ec10 894208 89f7 }
            // n = 6, score = 200
            //   8b55c4               | mov                 edx, dword ptr [ebp - 0x3c]
            //   8b4dc0               | mov                 ecx, dword ptr [ebp - 0x40]
            //   89c6                 | mov                 esi, eax
            //   83ec10               | sub                 esp, 0x10
            //   894208               | mov                 dword ptr [edx + 8], eax
            //   89f7                 | mov                 edi, esi

        $sequence_4 = { 8b7508 8b4a10 037214 89c7 }
            // n = 4, score = 200
            //   8b7508               | mov                 esi, dword ptr [ebp + 8]
            //   8b4a10               | mov                 ecx, dword ptr [edx + 0x10]
            //   037214               | add                 esi, dword ptr [edx + 0x14]
            //   89c7                 | mov                 edi, eax

        $sequence_5 = { 8b03 c745d000000000 0fb75014 8d741018 e9???????? }
            // n = 5, score = 200
            //   8b03                 | mov                 eax, dword ptr [ebx]
            //   c745d000000000       | mov                 dword ptr [ebp - 0x30], 0
            //   0fb75014             | movzx               edx, word ptr [eax + 0x14]
            //   8d741018             | lea                 esi, [eax + edx + 0x18]
            //   e9????????           |                     

        $sequence_6 = { 75d3 eb30 8b55d0 8d440202 ebd4 8b4320 }
            // n = 6, score = 200
            //   75d3                 | jne                 0xffffffd5
            //   eb30                 | jmp                 0x32
            //   8b55d0               | mov                 edx, dword ptr [ebp - 0x30]
            //   8d440202             | lea                 eax, [edx + eax + 2]
            //   ebd4                 | jmp                 0xffffffd6
            //   8b4320               | mov                 eax, dword ptr [ebx + 0x20]

        $sequence_7 = { 8b02 85c0 740c 8b55d0 }
            // n = 4, score = 200
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   85c0                 | test                eax, eax
            //   740c                 | je                  0xe
            //   8b55d0               | mov                 edx, dword ptr [ebp - 0x30]

        $sequence_8 = { 7514 a840 7405 8b4a20 eb07 a880 74a6 }
            // n = 7, score = 200
            //   7514                 | jne                 0x16
            //   a840                 | test                al, 0x40
            //   7405                 | je                  7
            //   8b4a20               | mov                 ecx, dword ptr [edx + 0x20]
            //   eb07                 | jmp                 9
            //   a880                 | test                al, 0x80
            //   74a6                 | je                  0xffffffa8

        $sequence_9 = { 894c2404 c744240c04000000 c744240800100000 03420c 894dc0 }
            // n = 5, score = 200
            //   894c2404             | mov                 dword ptr [esp + 4], ecx
            //   c744240c04000000     | mov                 dword ptr [esp + 0xc], 4
            //   c744240800100000     | mov                 dword ptr [esp + 8], 0x1000
            //   03420c               | add                 eax, dword ptr [edx + 0xc]
            //   894dc0               | mov                 dword ptr [ebp - 0x40], ecx

    condition:
        7 of them and filesize < 180224
}