rule win_glupteba_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        version = "1"
        description = "Detects win.glupteba."
        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.glupteba"
        malpedia_rule_date = "20220513"
        malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26"
        malpedia_version = "20220516"
        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 = { 895dd0 89bdccfeffff 89b5c8feffff 33c9 8d85ccfeffff 3910 7408 }
            // n = 7, score = 400
            //   895dd0               | mov                 dword ptr [ebp - 0x30], ebx
            //   89bdccfeffff         | mov                 dword ptr [ebp - 0x134], edi
            //   89b5c8feffff         | mov                 dword ptr [ebp - 0x138], esi
            //   33c9                 | xor                 ecx, ecx
            //   8d85ccfeffff         | lea                 eax, [ebp - 0x134]
            //   3910                 | cmp                 dword ptr [eax], edx
            //   7408                 | je                  0xa

        $sequence_1 = { 6a02 ff75f2 ff15???????? ff75f2 ff15???????? 838b????????ff ff0d???????? }
            // n = 7, score = 400
            //   6a02                 | push                2
            //   ff75f2               | push                dword ptr [ebp - 0xe]
            //   ff15????????         |                     
            //   ff75f2               | push                dword ptr [ebp - 0xe]
            //   ff15????????         |                     
            //   838b????????ff       |                     
            //   ff0d????????         |                     

        $sequence_2 = { a0???????? 3ac3 7418 53 }
            // n = 4, score = 400
            //   a0????????           |                     
            //   3ac3                 | cmp                 al, bl
            //   7418                 | je                  0x1a
            //   53                   | push                ebx

        $sequence_3 = { 33770c 8b7dc8 3375e0 ff4de8 894dd4 897dd8 8975dc }
            // n = 7, score = 400
            //   33770c               | xor                 esi, dword ptr [edi + 0xc]
            //   8b7dc8               | mov                 edi, dword ptr [ebp - 0x38]
            //   3375e0               | xor                 esi, dword ptr [ebp - 0x20]
            //   ff4de8               | dec                 dword ptr [ebp - 0x18]
            //   894dd4               | mov                 dword ptr [ebp - 0x2c], ecx
            //   897dd8               | mov                 dword ptr [ebp - 0x28], edi
            //   8975dc               | mov                 dword ptr [ebp - 0x24], esi

        $sequence_4 = { 897904 8b7b08 895304 8b5008 33fa 897908 8b7b0c }
            // n = 7, score = 400
            //   897904               | mov                 dword ptr [ecx + 4], edi
            //   8b7b08               | mov                 edi, dword ptr [ebx + 8]
            //   895304               | mov                 dword ptr [ebx + 4], edx
            //   8b5008               | mov                 edx, dword ptr [eax + 8]
            //   33fa                 | xor                 edi, edx
            //   897908               | mov                 dword ptr [ecx + 8], edi
            //   8b7b0c               | mov                 edi, dword ptr [ebx + 0xc]

        $sequence_5 = { 83c40c ff750c 66c745f00200 ff15???????? 668945f2 6a10 }
            // n = 6, score = 400
            //   83c40c               | add                 esp, 0xc
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   66c745f00200         | mov                 word ptr [ebp - 0x10], 2
            //   ff15????????         |                     
            //   668945f2             | mov                 word ptr [ebp - 0xe], ax
            //   6a10                 | push                0x10

        $sequence_6 = { 8b7f0c 33780c 0fb6d2 c1ea04 4a 894510 895dd0 }
            // n = 7, score = 400
            //   8b7f0c               | mov                 edi, dword ptr [edi + 0xc]
            //   33780c               | xor                 edi, dword ptr [eax + 0xc]
            //   0fb6d2               | movzx               edx, dl
            //   c1ea04               | shr                 edx, 4
            //   4a                   | dec                 edx
            //   894510               | mov                 dword ptr [ebp + 0x10], eax
            //   895dd0               | mov                 dword ptr [ebp - 0x30], ebx

        $sequence_7 = { 0f8491000000 6a06 8d45d4 50 57 }
            // n = 5, score = 400
            //   0f8491000000         | je                  0x97
            //   6a06                 | push                6
            //   8d45d4               | lea                 eax, [ebp - 0x2c]
            //   50                   | push                eax
            //   57                   | push                edi

        $sequence_8 = { 00cd 3e46 005e3e 46 }
            // n = 4, score = 100
            //   00cd                 | add                 ch, cl
            //   3e46                 | inc                 esi
            //   005e3e               | add                 byte ptr [esi + 0x3e], bl
            //   46                   | inc                 esi

        $sequence_9 = { 005e3e 46 00ff 3e46 }
            // n = 4, score = 100
            //   005e3e               | add                 byte ptr [esi + 0x3e], bl
            //   46                   | inc                 esi
            //   00ff                 | add                 bh, bh
            //   3e46                 | inc                 esi

        $sequence_10 = { 00f1 3d46005e3e 46 00cd }
            // n = 4, score = 100
            //   00f1                 | add                 cl, dh
            //   3d46005e3e           | cmp                 eax, 0x3e5e0046
            //   46                   | inc                 esi
            //   00cd                 | add                 ch, cl

        $sequence_11 = { 00ff 3e46 0012 3f }
            // n = 4, score = 100
            //   00ff                 | add                 bh, bh
            //   3e46                 | inc                 esi
            //   0012                 | add                 byte ptr [edx], dl
            //   3f                   | aas                 

        $sequence_12 = { 0101 03d3 8b4620 8bcb }
            // n = 4, score = 100
            //   0101                 | add                 dword ptr [ecx], eax
            //   03d3                 | add                 edx, ebx
            //   8b4620               | mov                 eax, dword ptr [esi + 0x20]
            //   8bcb                 | mov                 ecx, ebx

        $sequence_13 = { 0106 830702 392e 75a0 }
            // n = 4, score = 100
            //   0106                 | add                 dword ptr [esi], eax
            //   830702               | add                 dword ptr [edi], 2
            //   392e                 | cmp                 dword ptr [esi], ebp
            //   75a0                 | jne                 0xffffffa2

        $sequence_14 = { 0012 3f 46 008bff558bec }
            // n = 4, score = 100
            //   0012                 | add                 byte ptr [edx], dl
            //   3f                   | aas                 
            //   46                   | inc                 esi
            //   008bff558bec         | add                 byte ptr [ebx - 0x1374aa01], cl

        $sequence_15 = { 0107 eb4d 8b02 89442418 }
            // n = 4, score = 100
            //   0107                 | add                 dword ptr [edi], eax
            //   eb4d                 | jmp                 0x4f
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   89442418             | mov                 dword ptr [esp + 0x18], eax

    condition:
        7 of them and filesize < 1417216
}