rule win_glupteba_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        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 = "20210604"
        malpedia_hash = "be09d5d71e77373c0f538068be31a2ad4c69cfbd"
        malpedia_version = "20210616"
        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 = { c605????????01 eb2e ffd7 99 f73d???????? 8d85f0feffff }
            // n = 6, score = 400
            //   c605????????01       |                     
            //   eb2e                 | jmp                 0x30
            //   ffd7                 | call                edi
            //   99                   | cdq                 
            //   f73d????????         |                     
            //   8d85f0feffff         | lea                 eax, dword ptr [ebp - 0x110]

        $sequence_1 = { 33db 889dd4feffff 8dbdd5feffff f3ab 66ab }
            // n = 5, score = 400
            //   33db                 | xor                 ebx, ebx
            //   889dd4feffff         | mov                 byte ptr [ebp - 0x12c], bl
            //   8dbdd5feffff         | lea                 edi, dword ptr [ebp - 0x12b]
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax

        $sequence_2 = { 8b35???????? 68???????? ff35???????? ffd6 3bc7 a3???????? 7517 }
            // n = 7, score = 400
            //   8b35????????         |                     
            //   68????????           |                     
            //   ff35????????         |                     
            //   ffd6                 | call                esi
            //   3bc7                 | cmp                 eax, edi
            //   a3????????           |                     
            //   7517                 | jne                 0x19

        $sequence_3 = { 8b4510 53 56 83c0fc 85c0 57 8b7d0c }
            // n = 7, score = 400
            //   8b4510               | mov                 eax, dword ptr [ebp + 0x10]
            //   53                   | push                ebx
            //   56                   | push                esi
            //   83c0fc               | add                 eax, -4
            //   85c0                 | test                eax, eax
            //   57                   | push                edi
            //   8b7d0c               | mov                 edi, dword ptr [ebp + 0xc]

        $sequence_4 = { f3ab 66ab be???????? 56 aa e8???????? }
            // n = 6, score = 400
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   66ab                 | stosw               word ptr es:[edi], ax
            //   be????????           |                     
            //   56                   | push                esi
            //   aa                   | stosb               byte ptr es:[edi], al
            //   e8????????           |                     

        $sequence_5 = { 833d????????00 7e46 53 56 57 }
            // n = 5, score = 400
            //   833d????????00       |                     
            //   7e46                 | jle                 0x48
            //   53                   | push                ebx
            //   56                   | push                esi
            //   57                   | push                edi

        $sequence_6 = { 7414 6a02 ff75f2 ff15???????? ff75f2 }
            // n = 5, score = 400
            //   7414                 | je                  0x16
            //   6a02                 | push                2
            //   ff75f2               | push                dword ptr [ebp - 0xe]
            //   ff15????????         |                     
            //   ff75f2               | push                dword ptr [ebp - 0xe]

        $sequence_7 = { e8???????? 8bd8 0fb745fb 50 53 57 e8???????? }
            // n = 7, score = 400
            //   e8????????           |                     
            //   8bd8                 | mov                 ebx, eax
            //   0fb745fb             | movzx               eax, word ptr [ebp - 5]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   57                   | push                edi
            //   e8????????           |                     

        $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 = { 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_10 = { 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_11 = { 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

        $sequence_12 = { 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_13 = { 00ff 3e46 0012 3f }
            // n = 4, score = 100
            //   00ff                 | add                 bh, bh
            //   3e46                 | inc                 esi
            //   0012                 | add                 byte ptr [edx], dl
            //   3f                   | aas                 

        $sequence_14 = { 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_15 = { 00f1 3d46005e3e 46 00cd }
            // n = 4, score = 100
            //   00f1                 | add                 cl, dh
            //   3d46005e3e           | cmp                 eax, 0x3e5e0046
            //   46                   | inc                 esi
            //   00cd                 | add                 ch, cl

    condition:
        7 of them and filesize < 1417216
}