rule win_zeus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-08-17"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.4.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.zeus"
        malpedia_rule_date = "20200817"
        malpedia_hash = "8c895fd01eccb47a6225bcb1a3ba53cbb98644c5"
        malpedia_version = "20200817"
        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 / approach 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 = { 52 51 50 e8???????? 6a10 ff74240c }
            // n = 6, score = 600
            //   52                   | push                edx
            //   51                   | push                ecx
            //   50                   | push                eax
            //   e8????????           |                     
            //   6a10                 | push                0x10
            //   ff74240c             | push                dword ptr [esp + 0xc]

        $sequence_2 = { 885dff e8???????? 385dff 741a }
            // n = 4, score = 600
            //   885dff               | mov                 byte ptr [ebp - 1], bl
            //   e8????????           |                     
            //   385dff               | cmp                 byte ptr [ebp - 1], bl
            //   741a                 | je                  0x1c

        $sequence_3 = { c6451700 8b5d10 3bde 7503 }
            // n = 4, score = 600
            //   c6451700             | mov                 byte ptr [ebp + 0x17], 0
            //   8b5d10               | mov                 ebx, dword ptr [ebp + 0x10]
            //   3bde                 | cmp                 ebx, esi
            //   7503                 | jne                 5

        $sequence_4 = { ff750c 33f6 ff7508 895dfc e8???????? 8bf0 }
            // n = 6, score = 600
            //   ff750c               | push                dword ptr [ebp + 0xc]
            //   33f6                 | xor                 esi, esi
            //   ff7508               | push                dword ptr [ebp + 8]
            //   895dfc               | mov                 dword ptr [ebp - 4], ebx
            //   e8????????           |                     
            //   8bf0                 | mov                 esi, eax

        $sequence_5 = { 807b0400 c644241301 750d e8???????? }
            // n = 4, score = 600
            //   807b0400             | cmp                 byte ptr [ebx + 4], 0
            //   c644241301           | mov                 byte ptr [esp + 0x13], 1
            //   750d                 | jne                 0xf
            //   e8????????           |                     

        $sequence_6 = { 75b8 56 ff15???????? b001 }
            // n = 4, score = 600
            //   75b8                 | jne                 0xffffffba
            //   56                   | push                esi
            //   ff15????????         |                     
            //   b001                 | mov                 al, 1

        $sequence_7 = { 1bc0 23c1 50 53 53 8d85f4feffff 50 }
            // n = 7, score = 600
            //   1bc0                 | sbb                 eax, eax
            //   23c1                 | and                 eax, ecx
            //   50                   | push                eax
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   8d85f4feffff         | lea                 eax, [ebp - 0x10c]
            //   50                   | push                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 = { 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_13 = { 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_14 = { 57 8d75f4 e8???????? 84c0 0f84ac000000 b809080002 3945f4 }
            // n = 7, score = 200
            //   57                   | push                edi
            //   8d75f4               | lea                 esi, [ebp - 0xc]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   0f84ac000000         | je                  0xb2
            //   b809080002           | mov                 eax, 0x2000809
            //   3945f4               | cmp                 dword ptr [ebp - 0xc], eax

        $sequence_15 = { 8b03 3509080002 3d5c5b4550 740b 3d59495351 0f85ca000000 807b0420 }
            // n = 7, score = 200
            //   8b03                 | mov                 eax, dword ptr [ebx]
            //   3509080002           | xor                 eax, 0x2000809
            //   3d5c5b4550           | cmp                 eax, 0x50455b5c
            //   740b                 | je                  0xd
            //   3d59495351           | cmp                 eax, 0x51534959
            //   0f85ca000000         | jne                 0xd0
            //   807b0420             | cmp                 byte ptr [ebx + 4], 0x20

        $sequence_16 = { 81fb5d515047 7410 81fb4f4d4156 7408 81fb59495354 }
            // n = 5, score = 200
            //   81fb5d515047         | cmp                 ebx, 0x4750515d
            //   7410                 | je                  0x12
            //   81fb4f4d4156         | cmp                 ebx, 0x56414d4f
            //   7408                 | je                  0xa
            //   81fb59495354         | cmp                 ebx, 0x54534959

        $sequence_17 = { 0d00008000 f6451801 b9???????? 7505 b9???????? 56 }
            // n = 6, score = 200
            //   0d00008000           | or                  eax, 0x800000
            //   f6451801             | test                byte ptr [ebp + 0x18], 1
            //   b9????????           |                     
            //   7505                 | jne                 7
            //   b9????????           |                     
            //   56                   | push                esi

        $sequence_18 = { b809080002 3945f4 7713 807d0801 0f8598000000 3945f4 0f828f000000 }
            // n = 7, score = 200
            //   b809080002           | mov                 eax, 0x2000809
            //   3945f4               | cmp                 dword ptr [ebp - 0xc], eax
            //   7713                 | ja                  0x15
            //   807d0801             | cmp                 byte ptr [ebp + 8], 1
            //   0f8598000000         | jne                 0x9e
            //   3945f4               | cmp                 dword ptr [ebp - 0xc], eax
            //   0f828f000000         | jb                  0x95

        $sequence_19 = { 68e6010000 68???????? 6809080002 8bc6 50 }
            // n = 5, score = 200
            //   68e6010000           | push                0x1e6
            //   68????????           |                     
            //   6809080002           | push                0x2000809
            //   8bc6                 | mov                 eax, esi
            //   50                   | push                eax

        $sequence_20 = { 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

        $sequence_21 = { 50 c707000e0000 c7470809080002 e8???????? }
            // n = 4, score = 200
            //   50                   | push                eax
            //   c707000e0000         | mov                 dword ptr [edi], 0xe00
            //   c7470809080002       | mov                 dword ptr [edi + 8], 0x2000809
            //   e8????????           |                     

        $sequence_22 = { 81fb59495354 7506 b364 6a14 }
            // n = 4, score = 200
            //   81fb59495354         | cmp                 ebx, 0x54534959
            //   7506                 | jne                 8
            //   b364                 | mov                 bl, 0x64
            //   6a14                 | push                0x14

    condition:
        7 of them and filesize < 319488
}