rule win_zeus_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        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 = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 84c0 75f0 8b45f4 2bc1 }
            // n = 4, score = 600
            //   84c0                 | test                al, al
            //   75f0                 | jne                 0xfffffff2
            //   8b45f4               | mov                 eax, dword ptr [ebp - 0xc]
            //   2bc1                 | sub                 eax, ecx

        $sequence_2 = { 8d4720 50 8bc6 e8???????? 84c0 7447 8d7708 }
            // n = 7, score = 600
            //   8d4720               | lea                 eax, [edi + 0x20]
            //   50                   | push                eax
            //   8bc6                 | mov                 eax, esi
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   7447                 | je                  0x49
            //   8d7708               | lea                 esi, [edi + 8]

        $sequence_3 = { 84c0 75ec fec0 c21400 8b4c2414 85c9 }
            // n = 6, score = 600
            //   84c0                 | test                al, al
            //   75ec                 | jne                 0xffffffee
            //   fec0                 | inc                 al
            //   c21400               | ret                 0x14
            //   8b4c2414             | mov                 ecx, dword ptr [esp + 0x14]
            //   85c9                 | test                ecx, ecx

        $sequence_4 = { c9 c20c00 55 8bec 81ec34040000 53 56 }
            // n = 7, score = 600
            //   c9                   | leave               
            //   c20c00               | ret                 0xc
            //   55                   | push                ebp
            //   8bec                 | mov                 ebp, esp
            //   81ec34040000         | sub                 esp, 0x434
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_5 = { eb03 8b4df0 837de800 8a1c0a 750b }
            // n = 5, score = 600
            //   eb03                 | jmp                 5
            //   8b4df0               | mov                 ecx, dword ptr [ebp - 0x10]
            //   837de800             | cmp                 dword ptr [ebp - 0x18], 0
            //   8a1c0a               | mov                 bl, byte ptr [edx + ecx]
            //   750b                 | jne                 0xd

        $sequence_6 = { e8???????? f7d8 1ac0 fec0 c9 c3 6a1c }
            // n = 7, score = 600
            //   e8????????           |                     
            //   f7d8                 | neg                 eax
            //   1ac0                 | sbb                 al, al
            //   fec0                 | inc                 al
            //   c9                   | leave               
            //   c3                   | ret                 
            //   6a1c                 | push                0x1c

        $sequence_7 = { e8???????? fe45fb 807dfb03 8975e4 c6043000 0f8283fdffff eb0c }
            // n = 7, score = 600
            //   e8????????           |                     
            //   fe45fb               | inc                 byte ptr [ebp - 5]
            //   807dfb03             | cmp                 byte ptr [ebp - 5], 3
            //   8975e4               | mov                 dword ptr [ebp - 0x1c], esi
            //   c6043000             | mov                 byte ptr [eax + esi], 0
            //   0f8283fdffff         | jb                  0xfffffd89
            //   eb0c                 | jmp                 0xe

        $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, [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 = { 56 ff15???????? 5e 8ac3 5b c20800 55 }
            // n = 7, score = 300
            //   56                   | push                esi
            //   ff15????????         |                     
            //   5e                   | pop                 esi
            //   8ac3                 | mov                 al, bl
            //   5b                   | pop                 ebx
            //   c20800               | ret                 8
            //   55                   | push                ebp

        $sequence_14 = { 0f84ac000000 b809080002 3945f4 7713 807d0801 }
            // n = 5, score = 200
            //   0f84ac000000         | je                  0xb2
            //   b809080002           | mov                 eax, 0x2000809
            //   3945f4               | cmp                 dword ptr [ebp - 0xc], eax
            //   7713                 | ja                  0x15
            //   807d0801             | cmp                 byte ptr [ebp + 8], 1

        $sequence_15 = { 8b03 3509080002 3d5c5b4550 740b 3d59495351 0f85ca000000 }
            // n = 6, 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

        $sequence_16 = { 7505 b9???????? 56 57 33f6 }
            // n = 5, score = 200
            //   7505                 | jne                 7
            //   b9????????           |                     
            //   56                   | push                esi
            //   57                   | push                edi
            //   33f6                 | xor                 esi, esi

        $sequence_17 = { ff35???????? e8???????? 5f 5e 8ac3 }
            // n = 5, score = 200
            //   ff35????????         |                     
            //   e8????????           |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   8ac3                 | mov                 al, bl

        $sequence_18 = { 83670400 894736 8d470c 50 c707000e0000 c7470809080002 e8???????? }
            // n = 7, score = 200
            //   83670400             | and                 dword ptr [edi + 4], 0
            //   894736               | mov                 dword ptr [edi + 0x36], eax
            //   8d470c               | lea                 eax, [edi + 0xc]
            //   50                   | push                eax
            //   c707000e0000         | mov                 dword ptr [edi], 0xe00
            //   c7470809080002       | mov                 dword ptr [edi + 8], 0x2000809
            //   e8????????           |                     

        $sequence_19 = { eb18 81fb5a5c4156 740c 81fb45415356 0f85b2000000 b365 6a15 }
            // n = 7, score = 200
            //   eb18                 | jmp                 0x1a
            //   81fb5a5c4156         | cmp                 ebx, 0x56415c5a
            //   740c                 | je                  0xe
            //   81fb45415356         | cmp                 ebx, 0x56534145
            //   0f85b2000000         | jne                 0xb8
            //   b365                 | mov                 bl, 0x65
            //   6a15                 | push                0x15

        $sequence_20 = { 8b1b 81f309080002 81fb5d515047 7410 81fb4f4d4156 7408 81fb59495354 }
            // n = 7, score = 200
            //   8b1b                 | mov                 ebx, dword ptr [ebx]
            //   81f309080002         | xor                 ebx, 0x2000809
            //   81fb5d515047         | cmp                 ebx, 0x4750515d
            //   7410                 | je                  0x12
            //   81fb4f4d4156         | cmp                 ebx, 0x56414d4f
            //   7408                 | je                  0xa
            //   81fb59495354         | cmp                 ebx, 0x54534959

        $sequence_21 = { b8d5000000 e8???????? 68e6010000 68???????? 6809080002 }
            // n = 5, score = 200
            //   b8d5000000           | mov                 eax, 0xd5
            //   e8????????           |                     
            //   68e6010000           | push                0x1e6
            //   68????????           |                     
            //   6809080002           | push                0x2000809

        $sequence_22 = { 81fb59495354 7506 b364 6a14 eb18 81fb5a5c4156 }
            // n = 6, score = 200
            //   81fb59495354         | cmp                 ebx, 0x54534959
            //   7506                 | jne                 8
            //   b364                 | mov                 bl, 0x64
            //   6a14                 | push                0x14
            //   eb18                 | jmp                 0x1a
            //   81fb5a5c4156         | cmp                 ebx, 0x56415c5a

        $sequence_23 = { 57 8d75f4 e8???????? 84c0 0f84ac000000 b809080002 }
            // n = 6, score = 200
            //   57                   | push                edi
            //   8d75f4               | lea                 esi, [ebp - 0xc]
            //   e8????????           |                     
            //   84c0                 | test                al, al
            //   0f84ac000000         | je                  0xb2
            //   b809080002           | mov                 eax, 0x2000809

    condition:
        7 of them and filesize < 319488
}