rule win_zeus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-05-16"
        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 = "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 = { 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 = { 8b35???????? 8d5610 57 8b3a 3b7d08 }
            // n = 5, score = 600
            //   8b35????????         |                     
            //   8d5610               | lea                 edx, [esi + 0x10]
            //   57                   | push                edi
            //   8b3a                 | mov                 edi, dword ptr [edx]
            //   3b7d08               | cmp                 edi, dword ptr [ebp + 8]

        $sequence_2 = { 8b33 393e 770f e8???????? 84c0 7406 8b03 }
            // n = 7, score = 600
            //   8b33                 | mov                 esi, dword ptr [ebx]
            //   393e                 | cmp                 dword ptr [esi], edi
            //   770f                 | ja                  0x11
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7406                 | je                  8
            //   8b03                 | mov                 eax, dword ptr [ebx]

        $sequence_3 = { 8b16 8b02 03c2 897808 85ff 760d 57 }
            // n = 7, score = 600
            //   8b16                 | mov                 edx, dword ptr [esi]
            //   8b02                 | mov                 eax, dword ptr [edx]
            //   03c2                 | add                 eax, edx
            //   897808               | mov                 dword ptr [eax + 8], edi
            //   85ff                 | test                edi, edi
            //   760d                 | jbe                 0xf
            //   57                   | push                edi

        $sequence_4 = { 8b32 8d4c3110 81f90000a000 7715 8918 c7400400000200 89780c }
            // n = 7, score = 600
            //   8b32                 | mov                 esi, dword ptr [edx]
            //   8d4c3110             | lea                 ecx, [ecx + esi + 0x10]
            //   81f90000a000         | cmp                 ecx, 0xa00000
            //   7715                 | ja                  0x17
            //   8918                 | mov                 dword ptr [eax], ebx
            //   c7400400000200       | mov                 dword ptr [eax + 4], 0x20000
            //   89780c               | mov                 dword ptr [eax + 0xc], edi

        $sequence_5 = { 8b3e 741b 6802010000 ff7510 8d85f8feffff 50 e8???????? }
            // n = 7, score = 600
            //   8b3e                 | mov                 edi, dword ptr [esi]
            //   741b                 | je                  0x1d
            //   6802010000           | push                0x102
            //   ff7510               | push                dword ptr [ebp + 0x10]
            //   8d85f8feffff         | lea                 eax, [ebp - 0x108]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_6 = { 8b3d???????? 3bfe 744f 56 56 56 ff74241c }
            // n = 7, score = 600
            //   8b3d????????         |                     
            //   3bfe                 | cmp                 edi, esi
            //   744f                 | je                  0x51
            //   56                   | push                esi
            //   56                   | push                esi
            //   56                   | push                esi
            //   ff74241c             | push                dword ptr [esp + 0x1c]

        $sequence_7 = { 8b3a 3b7d08 740a 40 }
            // n = 4, score = 600
            //   8b3a                 | mov                 edi, dword ptr [edx]
            //   3b7d08               | cmp                 edi, dword ptr [ebp + 8]
            //   740a                 | je                  0xc
            //   40                   | inc                 eax

        $sequence_8 = { 891d???????? 891d???????? ffd6 68???????? }
            // n = 4, score = 500
            //   891d????????         |                     
            //   891d????????         |                     
            //   ffd6                 | call                esi
            //   68????????           |                     

        $sequence_9 = { 8bf3 6810270000 ff35???????? ff15???????? }
            // n = 4, score = 500
            //   8bf3                 | mov                 esi, ebx
            //   6810270000           | push                0x2710
            //   ff35????????         |                     
            //   ff15????????         |                     

        $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, [ebp - 0x250]
            //   e8????????           |                     
            //   8ad8                 | mov                 bl, al
            //   84db                 | test                bl, bl

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

        $sequence_13 = { 5e 8ac3 5b c20800 55 8bec 83e4f8 }
            // n = 7, score = 300
            //   5e                   | pop                 esi
            //   8ac3                 | mov                 al, bl
            //   5b                   | pop                 ebx
            //   c20800               | ret                 8
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   83e4f8               | and                 esp, 0xfffffff8

        $sequence_14 = { 0f84c5000000 57 8d75f4 e8???????? 84c0 0f84ac000000 b809080002 }
            // n = 7, score = 200
            //   0f84c5000000         | je                  0xcb
            //   57                   | push                edi
            //   8d75f4               | lea                 esi, [ebp - 0xc]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   0f84ac000000         | je                  0xb2
            //   b809080002           | mov                 eax, 0x2000809

        $sequence_15 = { 6813270000 6a04 5b 8bc6 c745f809080002 }
            // n = 5, score = 200
            //   6813270000           | push                0x2713
            //   6a04                 | push                4
            //   5b                   | pop                 ebx
            //   8bc6                 | mov                 eax, esi
            //   c745f809080002       | mov                 dword ptr [ebp - 8], 0x2000809

        $sequence_16 = { 6809080002 8bc6 50 8d45fc 50 e8???????? }
            // n = 6, score = 200
            //   6809080002           | push                0x2000809
            //   8bc6                 | mov                 eax, esi
            //   50                   | push                eax
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_17 = { e8???????? 68e6010000 68???????? 6809080002 }
            // n = 4, score = 200
            //   e8????????           |                     
            //   68e6010000           | push                0x1e6
            //   68????????           |                     
            //   6809080002           | push                0x2000809

        $sequence_18 = { 2501000080 7905 48 83c8fe 40 ff75f4 f7d8 }
            // n = 7, score = 200
            //   2501000080           | and                 eax, 0x80000001
            //   7905                 | jns                 7
            //   48                   | dec                 eax
            //   83c8fe               | or                  eax, 0xfffffffe
            //   40                   | inc                 eax
            //   ff75f4               | push                dword ptr [ebp - 0xc]
            //   f7d8                 | neg                 eax

        $sequence_19 = { b364 6a14 eb18 81fb5a5c4156 }
            // n = 4, score = 200
            //   b364                 | mov                 bl, 0x64
            //   6a14                 | push                0x14
            //   eb18                 | jmp                 0x1a
            //   81fb5a5c4156         | cmp                 ebx, 0x56415c5a

        $sequence_20 = { 740c 81fb45415356 0f85b2000000 b365 6a15 }
            // n = 5, score = 200
            //   740c                 | je                  0xe
            //   81fb45415356         | cmp                 ebx, 0x56534145
            //   0f85b2000000         | jne                 0xb8
            //   b365                 | mov                 bl, 0x65
            //   6a15                 | push                0x15

        $sequence_21 = { 8d470c 50 c707000e0000 c7470809080002 e8???????? }
            // n = 5, score = 200
            //   8d470c               | lea                 eax, [edi + 0xc]
            //   50                   | push                eax
            //   c707000e0000         | mov                 dword ptr [edi], 0xe00
            //   c7470809080002       | mov                 dword ptr [edi + 8], 0x2000809
            //   e8????????           |                     

        $sequence_22 = { 3d59495351 0f85ca000000 807b0420 0f85c0000000 33c0 83c6fb }
            // n = 6, score = 200
            //   3d59495351           | cmp                 eax, 0x51534959
            //   0f85ca000000         | jne                 0xd0
            //   807b0420             | cmp                 byte ptr [ebx + 4], 0x20
            //   0f85c0000000         | jne                 0xc6
            //   33c0                 | xor                 eax, eax
            //   83c6fb               | add                 esi, -5

    condition:
        7 of them and filesize < 319488
}