rule win_zeus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2021-06-10"
        version = "1"
        description = "Detects win.zeus."
        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.zeus"
        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 = { eb58 833f00 7651 8b5f08 }
            // n = 4, score = 700
            //   eb58                 | jmp                 0x5a
            //   833f00               | cmp                 dword ptr [edi], 0
            //   7651                 | jbe                 0x53
            //   8b5f08               | mov                 ebx, dword ptr [edi + 8]

        $sequence_1 = { ff15???????? 8325????????00 e9???????? 83f90a 751a 68???????? }
            // n = 6, score = 600
            //   ff15????????         |                     
            //   8325????????00       |                     
            //   e9????????           |                     
            //   83f90a               | cmp                 ecx, 0xa
            //   751a                 | jne                 0x1c
            //   68????????           |                     

        $sequence_2 = { a1???????? 7405 8b400c eb03 8b4010 50 ff35???????? }
            // n = 7, score = 600
            //   a1????????           |                     
            //   7405                 | je                  7
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   eb03                 | jmp                 5
            //   8b4010               | mov                 eax, dword ptr [eax + 0x10]
            //   50                   | push                eax
            //   ff35????????         |                     

        $sequence_3 = { e9???????? 83f909 7526 8b4508 }
            // n = 4, score = 600
            //   e9????????           |                     
            //   83f909               | cmp                 ecx, 9
            //   7526                 | jne                 0x28
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]

        $sequence_4 = { c745f803010000 ff15???????? 85c0 741b }
            // n = 4, score = 600
            //   c745f803010000       | mov                 dword ptr [ebp - 8], 0x103
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   741b                 | je                  0x1d

        $sequence_5 = { e9???????? 83f90b 7507 68???????? }
            // n = 4, score = 600
            //   e9????????           |                     
            //   83f90b               | cmp                 ecx, 0xb
            //   7507                 | jne                 9
            //   68????????           |                     

        $sequence_6 = { a1???????? 7508 8b481c 8b4020 }
            // n = 4, score = 600
            //   a1????????           |                     
            //   7508                 | jne                 0xa
            //   8b481c               | mov                 ecx, dword ptr [eax + 0x1c]
            //   8b4020               | mov                 eax, dword ptr [eax + 0x20]

        $sequence_7 = { 8bc6 e8???????? 84c0 7447 8d7708 83c720 57 }
            // n = 7, score = 600
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7447                 | je                  0x49
            //   8d7708               | lea                 esi, dword ptr [edi + 8]
            //   83c720               | add                 edi, 0x20
            //   57                   | push                edi

        $sequence_8 = { 8bf3 6810270000 ff35???????? ff15???????? }
            // n = 4, score = 500
            //   8bf3                 | mov                 esi, ebx
            //   6810270000           | push                0x2710
            //   ff35????????         |                     
            //   ff15????????         |                     

        $sequence_9 = { 891d???????? 891d???????? ffd6 68???????? }
            // n = 4, score = 500
            //   891d????????         |                     
            //   891d????????         |                     
            //   ffd6                 | call                esi
            //   68????????           |                     

        $sequence_10 = { e8???????? 84c0 7442 6a10 }
            // n = 4, score = 500
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7442                 | je                  0x44
            //   6a10                 | push                0x10

        $sequence_11 = { 8d8db0fdffff e8???????? 8ad8 84db }
            // n = 4, score = 400
            //   8d8db0fdffff         | lea                 ecx, dword ptr [ebp - 0x250]
            //   e8????????           |                     
            //   8ad8                 | mov                 bl, al
            //   84db                 | test                bl, bl

        $sequence_12 = { c9 c20400 55 8bec f6451802 }
            // n = 5, score = 300
            //   c9                   | leave               
            //   c20400               | ret                 4
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   f6451802             | test                byte ptr [ebp + 0x18], 2

        $sequence_13 = { ff15???????? 5e 8ac3 5b c20800 55 }
            // n = 6, score = 300
            //   ff15????????         |                     
            //   5e                   | pop                 esi
            //   8ac3                 | mov                 al, bl
            //   5b                   | pop                 ebx
            //   c20800               | ret                 8
            //   55                   | push                ebp

        $sequence_14 = { ff35???????? e8???????? 5f 5e 8ac3 }
            // n = 5, score = 200
            //   ff35????????         |                     
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   8ac3                 | mov                 al, bl

        $sequence_15 = { 740b 3d59495351 0f85ca000000 807b0420 0f85c0000000 }
            // n = 5, score = 200
            //   740b                 | je                  0xd
            //   3d59495351           | cmp                 eax, 0x51534959
            //   0f85ca000000         | jne                 0xd0
            //   807b0420             | cmp                 byte ptr [ebx + 4], 0x20
            //   0f85c0000000         | jne                 0xc6

        $sequence_16 = { 8d470c 50 c707000e0000 c7470809080002 }
            // n = 4, score = 200
            //   8d470c               | lea                 eax, dword ptr [edi + 0xc]
            //   50                   | push                eax
            //   c707000e0000         | mov                 dword ptr [edi], 0xe00
            //   c7470809080002       | mov                 dword ptr [edi + 8], 0x2000809

        $sequence_17 = { 7506 b364 6a14 eb18 81fb5a5c4156 740c 81fb45415356 }
            // n = 7, score = 200
            //   7506                 | jne                 8
            //   b364                 | mov                 bl, 0x64
            //   6a14                 | push                0x14
            //   eb18                 | jmp                 0x1a
            //   81fb5a5c4156         | cmp                 ebx, 0x56415c5a
            //   740c                 | je                  0xe
            //   81fb45415356         | cmp                 ebx, 0x56534145

        $sequence_18 = { 83fe06 0f86e3000000 8b03 3509080002 3d5c5b4550 }
            // n = 5, score = 200
            //   83fe06               | cmp                 esi, 6
            //   0f86e3000000         | jbe                 0xe9
            //   8b03                 | mov                 eax, dword ptr [ebx]
            //   3509080002           | xor                 eax, 0x2000809
            //   3d5c5b4550           | cmp                 eax, 0x50455b5c

        $sequence_19 = { 6813270000 6a04 5b 8bc6 c745f809080002 e8???????? }
            // n = 6, score = 200
            //   6813270000           | push                0x2713
            //   6a04                 | push                4
            //   5b                   | pop                 ebx
            //   8bc6                 | mov                 eax, esi
            //   c745f809080002       | mov                 dword ptr [ebp - 8], 0x2000809
            //   e8????????           |                     

        $sequence_20 = { 3509080002 3d5c5b4550 740b 3d59495351 }
            // n = 4, score = 200
            //   3509080002           | xor                 eax, 0x2000809
            //   3d5c5b4550           | cmp                 eax, 0x50455b5c
            //   740b                 | je                  0xd
            //   3d59495351           | cmp                 eax, 0x51534959

        $sequence_21 = { 8bc6 c745f809080002 e8???????? 8ad8 f6450c04 7473 }
            // n = 6, score = 200
            //   8bc6                 | mov                 eax, esi
            //   c745f809080002       | mov                 dword ptr [ebp - 8], 0x2000809
            //   e8????????           |                     
            //   8ad8                 | mov                 bl, al
            //   f6450c04             | test                byte ptr [ebp + 0xc], 4
            //   7473                 | je                  0x75

        $sequence_22 = { 57 8d75f4 e8???????? 84c0 0f84ac000000 b809080002 }
            // n = 6, score = 200
            //   57                   | push                edi
            //   8d75f4               | lea                 esi, dword ptr [ebp - 0xc]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   0f84ac000000         | je                  0xb2
            //   b809080002           | mov                 eax, 0x2000809

    condition:
        7 of them and filesize < 319488
}