rule win_redleaves_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.redleaves."
        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.redleaves"
        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 = { 7565 7279 55 7365 7254 }
            // n = 5, score = 400
            //   7565                 | jne                 0x67
            //   7279                 | jb                  0x7b
            //   55                   | push                ebp
            //   7365                 | jae                 0x67
            //   7254                 | jb                  0x56

        $sequence_1 = { 59 89f9 8d64241c d2c0 }
            // n = 4, score = 400
            //   59                   | pop                 ecx
            //   89f9                 | mov                 ecx, edi
            //   8d64241c             | lea                 esp, [esp + 0x1c]
            //   d2c0                 | rol                 al, cl

        $sequence_2 = { 9c 894504 9c 9c }
            // n = 4, score = 400
            //   9c                   | pushfd              
            //   894504               | mov                 dword ptr [ebp + 4], eax
            //   9c                   | pushfd              
            //   9c                   | pushfd              

        $sequence_3 = { 8d64241c d2c0 8a01 9c }
            // n = 4, score = 400
            //   8d64241c             | lea                 esp, [esp + 0x1c]
            //   d2c0                 | rol                 al, cl
            //   8a01                 | mov                 al, byte ptr [ecx]
            //   9c                   | pushfd              

        $sequence_4 = { 57 54 53 51 7565 }
            // n = 5, score = 400
            //   57                   | push                edi
            //   54                   | push                esp
            //   53                   | push                ebx
            //   51                   | push                ecx
            //   7565                 | jne                 0x67

        $sequence_5 = { 83e901 0f85edffffff 89d0 29f8 5f 5b }
            // n = 6, score = 400
            //   83e901               | sub                 ecx, 1
            //   0f85edffffff         | jne                 0xfffffff3
            //   89d0                 | mov                 eax, edx
            //   29f8                 | sub                 eax, edi
            //   5f                   | pop                 edi
            //   5b                   | pop                 ebx

        $sequence_6 = { 47 657449 7041 64647254 }
            // n = 4, score = 400
            //   47                   | inc                 edi
            //   657449               | je                  0x4c
            //   7041                 | jo                  0x43
            //   64647254             | jb                  0x58

        $sequence_7 = { 395e1c 750f c7862001000003000000 e9???????? }
            // n = 4, score = 300
            //   395e1c               | cmp                 dword ptr [esi + 0x1c], ebx
            //   750f                 | jne                 0x11
            //   c7862001000003000000     | mov    dword ptr [esi + 0x120], 3
            //   e9????????           |                     

        $sequence_8 = { 9c 8f442428 880424 e8???????? }
            // n = 4, score = 300
            //   9c                   | pushfd              
            //   8f442428             | pop                 dword ptr [esp + 0x28]
            //   880424               | mov                 byte ptr [esp], al
            //   e8????????           |                     

        $sequence_9 = { 85c0 7449 83fb01 7504 }
            // n = 4, score = 300
            //   85c0                 | test                eax, eax
            //   7449                 | je                  0x4b
            //   83fb01               | cmp                 ebx, 1
            //   7504                 | jne                 6

        $sequence_10 = { 85c0 7443 8d85acfeffff 68???????? 50 }
            // n = 5, score = 300
            //   85c0                 | test                eax, eax
            //   7443                 | je                  0x45
            //   8d85acfeffff         | lea                 eax, [ebp - 0x154]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_11 = { 7437 2dc9000000 7430 83e806 752b 8d45f0 50 }
            // n = 7, score = 300
            //   7437                 | je                  0x39
            //   2dc9000000           | sub                 eax, 0xc9
            //   7430                 | je                  0x32
            //   83e806               | sub                 eax, 6
            //   752b                 | jne                 0x2d
            //   8d45f0               | lea                 eax, [ebp - 0x10]
            //   50                   | push                eax

        $sequence_12 = { 85c0 7452 833d????????00 7449 833d????????00 }
            // n = 5, score = 300
            //   85c0                 | test                eax, eax
            //   7452                 | je                  0x54
            //   833d????????00       |                     
            //   7449                 | je                  0x4b
            //   833d????????00       |                     

        $sequence_13 = { 3bc3 74d4 8b08 50 ff5108 }
            // n = 5, score = 300
            //   3bc3                 | cmp                 eax, ebx
            //   74d4                 | je                  0xffffffd6
            //   8b08                 | mov                 ecx, dword ptr [eax]
            //   50                   | push                eax
            //   ff5108               | call                dword ptr [ecx + 8]

        $sequence_14 = { 898d8cfdffff 8b04b0 8b4018 898588fdffff }
            // n = 4, score = 300
            //   898d8cfdffff         | mov                 dword ptr [ebp - 0x274], ecx
            //   8b04b0               | mov                 eax, dword ptr [eax + esi*4]
            //   8b4018               | mov                 eax, dword ptr [eax + 0x18]
            //   898588fdffff         | mov                 dword ptr [ebp - 0x278], eax

        $sequence_15 = { 54 9c 60 9c }
            // n = 4, score = 300
            //   54                   | push                esp
            //   9c                   | pushfd              
            //   60                   | pushal              
            //   9c                   | pushfd              

        $sequence_16 = { 33c0 f3ab 8b860c020000 3bc3 0f840e020000 399e10020000 }
            // n = 6, score = 300
            //   33c0                 | xor                 eax, eax
            //   f3ab                 | rep stosd           dword ptr es:[edi], eax
            //   8b860c020000         | mov                 eax, dword ptr [esi + 0x20c]
            //   3bc3                 | cmp                 eax, ebx
            //   0f840e020000         | je                  0x214
            //   399e10020000         | cmp                 dword ptr [esi + 0x210], ebx

    condition:
        7 of them and filesize < 1679360
}