rule win_sedreco_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-10-14"
        version = "1"
        description = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.5.0"
        tool_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.sedreco"
        malpedia_rule_date = "20201014"
        malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9"
        malpedia_version = "20201014"
        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 = { 8b750c 56 e8???????? 6a08 }
            // n = 4, score = 1900
            //   8b750c               | sub                 dword ptr [ebp + 8], 4
            //   56                   | push                ebx
            //   e8????????           |                     
            //   6a08                 | push                esi

        $sequence_1 = { e8???????? 89450c 56 85c0 }
            // n = 4, score = 1900
            //   e8????????           |                     
            //   89450c               | call                dword ptr [eax + 0x40]
            //   56                   | mov                 dword ptr [eax], 0x16
            //   85c0                 | or                  eax, 0xffffffff

        $sequence_2 = { c645ff30 e8???????? 85c0 7505 e8???????? }
            // n = 5, score = 1900
            //   c645ff30             | mov                 edx, 0x2710
            //   e8????????           |                     
            //   85c0                 | call                dword ptr [eax + 0x10]
            //   7505                 | inc                 esp
            //   e8????????           |                     

        $sequence_3 = { 8bec 51 836d0804 53 56 }
            // n = 5, score = 1900
            //   8bec                 | dec                 eax
            //   51                   | add                 esp, 0x28
            //   836d0804             | ret                 
            //   53                   | dec                 eax
            //   56                   | test                ecx, ecx

        $sequence_4 = { 50 68???????? 6a0d 68???????? }
            // n = 4, score = 1800
            //   50                   | sub                 dword ptr [ebp + 8], 4
            //   68????????           |                     
            //   6a0d                 | push                ebx
            //   68????????           |                     

        $sequence_5 = { 7ce0 a1???????? 5e 85c0 }
            // n = 4, score = 1700
            //   7ce0                 | sub                 dword ptr [ebp + 8], 4
            //   a1????????           |                     
            //   5e                   | push                ebx
            //   85c0                 | push                esi

        $sequence_6 = { 7411 6a04 68???????? 68???????? e8???????? }
            // n = 5, score = 1700
            //   7411                 | push                ebp
            //   6a04                 | mov                 ebp, esp
            //   68????????           |                     
            //   68????????           |                     
            //   e8????????           |                     

        $sequence_7 = { 51 6802020000 68???????? 50 }
            // n = 4, score = 1700
            //   51                   | push                ebx
            //   6802020000           | push                esi
            //   68????????           |                     
            //   50                   | mov                 esi, dword ptr [ebp + 0xc]

        $sequence_8 = { ffd6 8b0d???????? 89815c010000 85c0 }
            // n = 4, score = 1600
            //   ffd6                 | je                  0x13
            //   8b0d????????         |                     
            //   89815c010000         | push                4
            //   85c0                 | jl                  0xffffffe2

        $sequence_9 = { b8f6eeeeee 8b4df0 64890d00000000 59 5f 5e 5b }
            // n = 7, score = 1600
            //   b8f6eeeeee           | pop                 esi
            //   8b4df0               | test                eax, eax
            //   64890d00000000       | push                esi
            //   59                   | test                eax, eax
            //   5f                   | je                  0x1e
            //   5e                   | push                eax
            //   5b                   | push                0xd

        $sequence_10 = { 8b3d???????? 56 683f000f00 6a00 }
            // n = 4, score = 1600
            //   8b3d????????         |                     
            //   56                   | mov                 eax, 1
            //   683f000f00           | mov                 ecx, dword ptr [ebp - 0x10]
            //   6a00                 | mov                 dword ptr fs:[0], ecx

        $sequence_11 = { ffd6 8b0d???????? 89415c 85c0 }
            // n = 4, score = 1600
            //   ffd6                 | jl                  0xffffffe2
            //   8b0d????????         |                     
            //   89415c               | pop                 esi
            //   85c0                 | test                eax, eax

        $sequence_12 = { e8???????? 83c40c b801000000 8b4df0 64890d00000000 }
            // n = 5, score = 1600
            //   e8????????           |                     
            //   83c40c               | push                ebx
            //   b801000000           | push                esi
            //   8b4df0               | mov                 esi, dword ptr [ebp + 0xc]
            //   64890d00000000       | push                eax

        $sequence_13 = { ff35???????? ffd6 8b0d???????? 898158010000 }
            // n = 4, score = 1200
            //   ff35????????         |                     
            //   ffd6                 | push                esi
            //   8b0d????????         |                     
            //   898158010000         | test                eax, eax

        $sequence_14 = { 6aff 68???????? 6a00 6a00 ffd6 8b4dfc }
            // n = 6, score = 500
            //   6aff                 | push                esi
            //   68????????           |                     
            //   6a00                 | mov                 byte ptr [ebp - 1], 0x30
            //   6a00                 | test                eax, eax
            //   ffd6                 | jne                 9
            //   8b4dfc               | jl                  0xffffffe2

        $sequence_15 = { 448bc0 ba08000000 488b0d???????? ff15???????? 488905???????? }
            // n = 5, score = 500
            //   448bc0               | xor                 eax, eax
            //   ba08000000           | dec                 eax
            //   488b0d????????       |                     
            //   ff15????????         |                     
            //   488905????????       |                     

        $sequence_16 = { 68???????? e8???????? 8b35???????? 83c404 6a00 }
            // n = 5, score = 500
            //   68????????           |                     
            //   e8????????           |                     
            //   8b35????????         |                     
            //   83c404               | push                eax
            //   6a00                 | push                -1

        $sequence_17 = { ba00000080 488b0d???????? 488b05???????? ff5040 }
            // n = 4, score = 500
            //   ba00000080           | dec                 eax
            //   488b0d????????       |                     
            //   488b05????????       |                     
            //   ff5040               | mov                 eax, dword ptr [esp + 0x50]

        $sequence_18 = { e8???????? c70016000000 e8???????? 83c8ff 4883c428 c3 4885c9 }
            // n = 7, score = 500
            //   e8????????           |                     
            //   c70016000000         | dec                 eax
            //   e8????????           |                     
            //   83c8ff               | mov                 dword ptr [esp + 0x20], eax
            //   4883c428             | inc                 ecx
            //   c3                   | mov                 ecx, 3
            //   4885c9               | inc                 ebp

        $sequence_19 = { 6a00 ffd6 50 68???????? 6aff }
            // n = 5, score = 500
            //   6a00                 | add                 esp, 4
            //   ffd6                 | push                0
            //   50                   | push                -1
            //   68????????           |                     
            //   6aff                 | add                 esp, 4

        $sequence_20 = { 33d2 33c9 488b05???????? ff90f0000000 488905???????? }
            // n = 5, score = 500
            //   33d2                 | dec                 eax
            //   33c9                 | mov                 dword ptr [esp + 0x20], eax
            //   488b05????????       |                     
            //   ff90f0000000         | inc                 ecx
            //   488905????????       |                     

        $sequence_21 = { 488b15???????? 488d4c2438 e8???????? 89442430 }
            // n = 4, score = 500
            //   488b15????????       |                     
            //   488d4c2438           | call                dword ptr [eax + 0xe8]
            //   e8????????           |                     
            //   89442430             | mov                 edx, 0x2710

        $sequence_22 = { 488b05???????? ff90e8000000 ba10270000 488b0d???????? 488b05???????? ff5010 }
            // n = 6, score = 500
            //   488b05????????       |                     
            //   ff90e8000000         | mov                 ecx, 3
            //   ba10270000           | inc                 ebp
            //   488b0d????????       |                     
            //   488b05????????       |                     
            //   ff5010               | xor                 eax, eax

        $sequence_23 = { 4883c010 4883c428 c3 48890d???????? c3 }
            // n = 5, score = 500
            //   4883c010             | dec                 eax
            //   4883c428             | add                 eax, 0x10
            //   c3                   | dec                 eax
            //   48890d????????       |                     
            //   c3                   | add                 esp, 0x28

        $sequence_24 = { 8b442458 89442428 488b442450 4889442420 41b903000000 4533c0 488b15???????? }
            // n = 7, score = 500
            //   8b442458             | ret                 
            //   89442428             | ret                 
            //   488b442450           | mov                 eax, dword ptr [esp + 0x58]
            //   4889442420           | mov                 dword ptr [esp + 0x28], eax
            //   41b903000000         | dec                 eax
            //   4533c0               | mov                 eax, dword ptr [esp + 0x50]
            //   488b15????????       |                     

        $sequence_25 = { 6800010000 6a00 68???????? e8???????? 6800020000 6a00 68???????? }
            // n = 7, score = 500
            //   6800010000           | mov                 ebp, esp
            //   6a00                 | push                ecx
            //   68????????           |                     
            //   e8????????           |                     
            //   6800020000           | sub                 dword ptr [ebp + 8], 4
            //   6a00                 | push                ebx
            //   68????????           |                     

        $sequence_26 = { ff15???????? 6a10 6a01 68???????? 68???????? }
            // n = 5, score = 500
            //   ff15????????         |                     
            //   6a10                 | push                esi
            //   6a01                 | mov                 esi, dword ptr [ebp + 0xc]
            //   68????????           |                     
            //   68????????           |                     

        $sequence_27 = { 8b35???????? 83c404 6a00 68???????? 6aff 68???????? 6a00 }
            // n = 7, score = 500
            //   8b35????????         |                     
            //   83c404               | add                 esp, 0xc
            //   6a00                 | mov                 eax, 1
            //   68????????           |                     
            //   6aff                 | mov                 ecx, dword ptr [ebp - 0x10]
            //   68????????           |                     
            //   6a00                 | mov                 dword ptr fs:[0], ecx

        $sequence_28 = { 7cd5 68???????? e8???????? 8b4dfc }
            // n = 4, score = 400
            //   7cd5                 | mov                 ecx, dword ptr [ebp - 4]
            //   68????????           |                     
            //   e8????????           |                     
            //   8b4dfc               | pop                 edi

        $sequence_29 = { 8b4dfc 5f 5e 33cd b8???????? 5b e8???????? }
            // n = 7, score = 400
            //   8b4dfc               | push                0
            //   5f                   | push                0
            //   5e                   | call                esi
            //   33cd                 | push                eax
            //   b8????????           |                     
            //   5b                   | call                esi
            //   e8????????           |                     

        $sequence_30 = { ff512c 8bf0 f7de 1bf6 }
            // n = 4, score = 200
            //   ff512c               | push                eax
            //   8bf0                 | call                dword ptr [ecx + 0x2c]
            //   f7de                 | mov                 ecx, esi
            //   1bf6                 | mov                 ebx, eax

        $sequence_31 = { 741f 6a07 68???????? e8???????? 85c0 }
            // n = 5, score = 200
            //   741f                 | mov                 ecx, dword ptr [ebp - 4]
            //   6a07                 | mov                 ecx, dword ptr [ebp - 4]
            //   68????????           |                     
            //   e8????????           |                     
            //   85c0                 | pop                 edi

        $sequence_32 = { 83ec10 53 56 57 894df0 ff15???????? }
            // n = 6, score = 200
            //   83ec10               | pop                 esi
            //   53                   | xor                 ecx, ebp
            //   56                   | call                esi
            //   57                   | mov                 ecx, dword ptr [ebp - 4]
            //   894df0               | pop                 edi
            //   ff15????????         |                     

        $sequence_33 = { 8bf1 8b06 50 8b08 ff9180000000 }
            // n = 5, score = 200
            //   8bf1                 | push                edi
            //   8b06                 | mov                 dword ptr [ebp - 0x10], ecx
            //   50                   | mov                 dword ptr [ebp - 4], eax
            //   8b08                 | je                  0x21
            //   ff9180000000         | push                7

        $sequence_34 = { 8b85e4feffff 8945f0 8b4df0 e8???????? }
            // n = 4, score = 200
            //   8b85e4feffff         | mov                 ebx, eax
            //   8945f0               | push                edi
            //   8b4df0               | push                eax
            //   e8????????           |                     

        $sequence_35 = { 57 50 ff512c 8bce 8bd8 }
            // n = 5, score = 200
            //   57                   | pop                 esi
            //   50                   | xor                 ecx, ebp
            //   ff512c               | jl                  0xffffffd7
            //   8bce                 | mov                 ecx, dword ptr [ebp - 4]
            //   8bd8                 | add                 esp, 4

        $sequence_36 = { c785ecfeffff01000000 c785e8feffffe197af54 0f6e85e8feffff 0f72f002 }
            // n = 4, score = 200
            //   c785ecfeffff01000000     | push    edi
            //   c785e8feffffe197af54     | push    eax
            //   0f6e85e8feffff       | call                dword ptr [ecx + 0x2c]
            //   0f72f002             | mov                 ecx, esi

        $sequence_37 = { ff15???????? 8945fc 8b45f0 8945f4 8b45f4 50 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   8945fc               | push                edi
            //   8b45f0               | call                dword ptr [ecx + 0x2c]
            //   8945f4               | mov                 esi, eax
            //   8b45f4               | neg                 esi
            //   50                   | sbb                 esi, esi

        $sequence_38 = { 8bce e8???????? 8b3d???????? 8d5630 52 6a00 }
            // n = 6, score = 100
            //   8bce                 | pop                 esi
            //   e8????????           |                     
            //   8b3d????????         |                     
            //   8d5630               | test                eax, eax
            //   52                   | add                 esp, 0xc
            //   6a00                 | mov                 eax, 1

        $sequence_39 = { 8b442410 8b4e2c 8b1d???????? 50 51 ffd3 }
            // n = 6, score = 100
            //   8b442410             | call                edi
            //   8b4e2c               | test                eax, eax
            //   8b1d????????         |                     
            //   50                   | mov                 dword ptr [esi + 0x2c], eax
            //   51                   | jne                 0x2f
            //   ffd3                 | mov                 ecx, dword ptr [esp + 0x24]

        $sequence_40 = { 896e0c a1???????? 8d54241c 8b08 }
            // n = 4, score = 100
            //   896e0c               | sub                 dword ptr [ebp + 8], 4
            //   a1????????           |                     
            //   8d54241c             | push                ebx
            //   8b08                 | push                esi

        $sequence_41 = { 8965f0 83ec10 8bdc 8965e0 6a00 }
            // n = 5, score = 100
            //   8965f0               | sub                 edx, ecx
            //   83ec10               | cmp                 edx, 1
            //   8bdc                 | ja                  7
            //   8965e0               | call                ebp
            //   6a00                 | mov                 ecx, esi

        $sequence_42 = { 51 56 8d4da8 ff15???????? }
            // n = 4, score = 100
            //   51                   | lea                 edx, [esi + 0x30]
            //   56                   | push                edx
            //   8d4da8               | push                0
            //   ff15????????         |                     

        $sequence_43 = { 8a54241c 8816 896e04 896e08 896e0c }
            // n = 5, score = 100
            //   8a54241c             | mov                 ecx, dword ptr [ebp - 0x10]
            //   8816                 | mov                 dword ptr fs:[0], ecx
            //   896e04               | pop                 ecx
            //   896e08               | pop                 edi
            //   896e0c               | pop                 esi

        $sequence_44 = { 8b4c2424 2bd1 83fa01 7702 ffd5 }
            // n = 5, score = 100
            //   8b4c2424             | push                4
            //   2bd1                 | push                ecx
            //   83fa01               | push                0x202
            //   7702                 | push                eax
            //   ffd5                 | jl                  0xffffffe2

        $sequence_45 = { 6a00 50 ffd7 85c0 89462c 7526 }
            // n = 6, score = 100
            //   6a00                 | mov                 esi, dword ptr [ebp + 0xc]
            //   50                   | push                eax
            //   ffd7                 | push                0xd
            //   85c0                 | je                  0x13
            //   89462c               | push                4
            //   7526                 | je                  0x13

    condition:
        7 of them and filesize < 1586176
}