rule win_mylobot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.mylobot."
        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.mylobot"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { 8d442428 50 57 e8???????? ffb424d4030000 ffb424d4030000 57 }
            // n = 7, score = 1000
            //   8d442428             | lea                 eax, [esp + 0x28]
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     
            //   ffb424d4030000       | push                dword ptr [esp + 0x3d4]
            //   ffb424d4030000       | push                dword ptr [esp + 0x3d4]
            //   57                   | push                edi

        $sequence_1 = { 8b742408 57 8d7e74 57 56 ff766c e8???????? }
            // n = 7, score = 1000
            //   8b742408             | mov                 esi, dword ptr [esp + 8]
            //   57                   | push                edi
            //   8d7e74               | lea                 edi, [esi + 0x74]
            //   57                   | push                edi
            //   56                   | push                esi
            //   ff766c               | push                dword ptr [esi + 0x6c]
            //   e8????????           |                     

        $sequence_2 = { 8d442434 50 8d44243c 50 8d942448020000 e8???????? 59 }
            // n = 7, score = 1000
            //   8d442434             | lea                 eax, [esp + 0x34]
            //   50                   | push                eax
            //   8d44243c             | lea                 eax, [esp + 0x3c]
            //   50                   | push                eax
            //   8d942448020000       | lea                 edx, [esp + 0x248]
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_3 = { 56 ffd3 8b0d???????? 55 894174 8d442414 50 }
            // n = 7, score = 1000
            //   56                   | push                esi
            //   ffd3                 | call                ebx
            //   8b0d????????         |                     
            //   55                   | push                ebp
            //   894174               | mov                 dword ptr [ecx + 0x74], eax
            //   8d442414             | lea                 eax, [esp + 0x14]
            //   50                   | push                eax

        $sequence_4 = { c6005c 8b4508 40 894508 68???????? 50 e8???????? }
            // n = 7, score = 1000
            //   c6005c               | mov                 byte ptr [eax], 0x5c
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   40                   | inc                 eax
            //   894508               | mov                 dword ptr [ebp + 8], eax
            //   68????????           |                     
            //   50                   | push                eax
            //   e8????????           |                     

        $sequence_5 = { 8d842494040000 50 e8???????? 8d8424c9010000 03c7 50 8d8424cc000000 }
            // n = 7, score = 1000
            //   8d842494040000       | lea                 eax, [esp + 0x494]
            //   50                   | push                eax
            //   e8????????           |                     
            //   8d8424c9010000       | lea                 eax, [esp + 0x1c9]
            //   03c7                 | add                 eax, edi
            //   50                   | push                eax
            //   8d8424cc000000       | lea                 eax, [esp + 0xcc]

        $sequence_6 = { 59 59 83ff06 7ca3 56 e8???????? 59 }
            // n = 7, score = 1000
            //   59                   | pop                 ecx
            //   59                   | pop                 ecx
            //   83ff06               | cmp                 edi, 6
            //   7ca3                 | jl                  0xffffffa5
            //   56                   | push                esi
            //   e8????????           |                     
            //   59                   | pop                 ecx

        $sequence_7 = { 74bd 56 57 53 ff15???????? 8bc7 5f }
            // n = 7, score = 1000
            //   74bd                 | je                  0xffffffbf
            //   56                   | push                esi
            //   57                   | push                edi
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   8bc7                 | mov                 eax, edi
            //   5f                   | pop                 edi

        $sequence_8 = { 2bc2 0fb6140e 52 d1f8 8d0447 }
            // n = 5, score = 800
            //   2bc2                 | sub                 eax, edx
            //   0fb6140e             | movzx               edx, byte ptr [esi + ecx]
            //   52                   | push                edx
            //   d1f8                 | sar                 eax, 1
            //   8d0447               | lea                 eax, [edi + eax*2]

        $sequence_9 = { 6806020000 50 8d8dc2fdffff 51 c745fc00000000 668985c0fdffff }
            // n = 6, score = 800
            //   6806020000           | push                0x206
            //   50                   | push                eax
            //   8d8dc2fdffff         | lea                 ecx, [ebp - 0x23e]
            //   51                   | push                ecx
            //   c745fc00000000       | mov                 dword ptr [ebp - 4], 0
            //   668985c0fdffff       | mov                 word ptr [ebp - 0x240], ax

        $sequence_10 = { 8b5108 50 ffd2 8b45fc 3bc3 7408 }
            // n = 6, score = 800
            //   8b5108               | mov                 edx, dword ptr [ecx + 8]
            //   50                   | push                eax
            //   ffd2                 | call                edx
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]
            //   3bc3                 | cmp                 eax, ebx
            //   7408                 | je                  0xa

        $sequence_11 = { 782c 8b17 8b4208 57 ffd0 8b45fc }
            // n = 6, score = 800
            //   782c                 | js                  0x2e
            //   8b17                 | mov                 edx, dword ptr [edi]
            //   8b4208               | mov                 eax, dword ptr [edx + 8]
            //   57                   | push                edi
            //   ffd0                 | call                eax
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_12 = { 33db eb7c 50 ffd7 8b8ee4000000 }
            // n = 5, score = 800
            //   33db                 | xor                 ebx, ebx
            //   eb7c                 | jmp                 0x7e
            //   50                   | push                eax
            //   ffd7                 | call                edi
            //   8b8ee4000000         | mov                 ecx, dword ptr [esi + 0xe4]

        $sequence_13 = { 0f8593000000 33d2 6a62 52 8d84249a000000 }
            // n = 5, score = 800
            //   0f8593000000         | jne                 0x99
            //   33d2                 | xor                 edx, edx
            //   6a62                 | push                0x62
            //   52                   | push                edx
            //   8d84249a000000       | lea                 eax, [esp + 0x9a]

        $sequence_14 = { 83c408 85c0 740d 6a22 56 ffd7 }
            // n = 6, score = 800
            //   83c408               | add                 esp, 8
            //   85c0                 | test                eax, eax
            //   740d                 | je                  0xf
            //   6a22                 | push                0x22
            //   56                   | push                esi
            //   ffd7                 | call                edi

        $sequence_15 = { 3bfa 75c7 8b4c240c 53 53 53 }
            // n = 6, score = 800
            //   3bfa                 | cmp                 edi, edx
            //   75c7                 | jne                 0xffffffc9
            //   8b4c240c             | mov                 ecx, dword ptr [esp + 0xc]
            //   53                   | push                ebx
            //   53                   | push                ebx
            //   53                   | push                ebx

    condition:
        7 of them and filesize < 8028160
}