rule win_magniber_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.magniber."
        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.magniber"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 8b55fc 8b8270040000 3b45f8 733c b902000000 }
            // n = 5, score = 400
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   8b8270040000         | mov                 eax, dword ptr [edx + 0x470]
            //   3b45f8               | cmp                 eax, dword ptr [ebp - 8]
            //   733c                 | jae                 0x3e
            //   b902000000           | mov                 ecx, 2

        $sequence_1 = { 8b4514 50 e8???????? 83c410 b801000000 eb02 }
            // n = 6, score = 400
            //   8b4514               | mov                 eax, dword ptr [ebp + 0x14]
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   b801000000           | mov                 eax, 1
            //   eb02                 | jmp                 4

        $sequence_2 = { 51 ff15???????? 68???????? 8d9564f7ffff 52 }
            // n = 5, score = 400
            //   51                   | push                ecx
            //   ff15????????         |                     
            //   68????????           |                     
            //   8d9564f7ffff         | lea                 edx, [ebp - 0x89c]
            //   52                   | push                edx

        $sequence_3 = { c785a0feffff109d4000 c785a4feffff189d4000 c785a8feffff209d4000 c785acfeffff289d4000 }
            // n = 4, score = 400
            //   c785a0feffff109d4000     | mov    dword ptr [ebp - 0x160], 0x409d10
            //   c785a4feffff189d4000     | mov    dword ptr [ebp - 0x15c], 0x409d18
            //   c785a8feffff209d4000     | mov    dword ptr [ebp - 0x158], 0x409d20
            //   c785acfeffff289d4000     | mov    dword ptr [ebp - 0x154], 0x409d28

        $sequence_4 = { 83c408 eb02 eb05 e9???????? 8b45e4 50 }
            // n = 6, score = 400
            //   83c408               | add                 esp, 8
            //   eb02                 | jmp                 4
            //   eb05                 | jmp                 7
            //   e9????????           |                     
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]
            //   50                   | push                eax

        $sequence_5 = { 50 ff15???????? 50 8d8d8cf9ffff 51 6a00 }
            // n = 6, score = 400
            //   50                   | push                eax
            //   ff15????????         |                     
            //   50                   | push                eax
            //   8d8d8cf9ffff         | lea                 ecx, [ebp - 0x674]
            //   51                   | push                ecx
            //   6a00                 | push                0

        $sequence_6 = { 8945fc 837dfc00 7430 c745f000000000 c745e804000000 }
            // n = 5, score = 400
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   837dfc00             | cmp                 dword ptr [ebp - 4], 0
            //   7430                 | je                  0x32
            //   c745f000000000       | mov                 dword ptr [ebp - 0x10], 0
            //   c745e804000000       | mov                 dword ptr [ebp - 0x18], 4

        $sequence_7 = { 740c 8b55fc c7420c00400000 eb0a 8b45fc }
            // n = 5, score = 400
            //   740c                 | je                  0xe
            //   8b55fc               | mov                 edx, dword ptr [ebp - 4]
            //   c7420c00400000       | mov                 dword ptr [edx + 0xc], 0x4000
            //   eb0a                 | jmp                 0xc
            //   8b45fc               | mov                 eax, dword ptr [ebp - 4]

        $sequence_8 = { d331 4e4e54 70ac 52 f8 a6 }
            // n = 6, score = 100
            //   d331                 | mov                 dh, 0x36
            //   4e4e54               | sal                 dword ptr [ecx], cl
            //   70ac                 | dec                 esi
            //   52                   | dec                 esi
            //   f8                   | push                esp
            //   a6                   | jo                  0xffffffae

        $sequence_9 = { 29aed0515fa6 8d4f0e 7f4c c82cd1c6 1a32 b636 }
            // n = 6, score = 100
            //   29aed0515fa6         | loop                0x26
            //   8d4f0e               | sub                 dword ptr [esi - 0x59a0ae30], ebp
            //   7f4c                 | lea                 ecx, [edi + 0xe]
            //   c82cd1c6             | jg                  0x51
            //   1a32                 | enter               -0x2ed4, -0x3a
            //   b636                 | sbb                 dh, byte ptr [edx]

        $sequence_10 = { f8 a6 6e d89bcb299b94 }
            // n = 4, score = 100
            //   f8                   | sub                 byte ptr [edi + 0x44], bl
            //   a6                   | rol                 edi, 0xd
            //   6e                   | loopne              0xfffffffa
            //   d89bcb299b94         | sub                 dword ptr [esi - 0x59a0ae30], ebp

        $sequence_11 = { 3e6c 21746c2e 4834b0 184026 e221 a1????????05eef081 }
            // n = 6, score = 100
            //   3e6c                 | insb                byte ptr es:[edi], dx
            //   21746c2e             | and                 dword ptr [esp + ebp*2 + 0x2e], esi
            //   4834b0               | dec                 eax
            //   184026               | xor                 al, 0xb0
            //   e221                 | sbb                 byte ptr [eax + 0x26], al
            //   a1????????05eef081     |     

        $sequence_12 = { 52 fc 285f44 c1c70d }
            // n = 4, score = 100
            //   52                   | push                edx
            //   fc                   | cld                 
            //   285f44               | sub                 byte ptr [edi + 0x44], bl
            //   c1c70d               | rol                 edi, 0xd

        $sequence_13 = { 56 18cb 52 fc }
            // n = 4, score = 100
            //   56                   | enter               -0x2ed4, -0x3a
            //   18cb                 | sbb                 dh, byte ptr [edx]
            //   52                   | sbb                 bl, cl
            //   fc                   | push                edx

        $sequence_14 = { e8???????? 32cb 5a b3b1 }
            // n = 4, score = 100
            //   e8????????           |                     
            //   32cb                 | lea                 ecx, [edi + 0xe]
            //   5a                   | jg                  0x57
            //   b3b1                 | enter               -0x2ed4, -0x3a

        $sequence_15 = { e221 a1????????05eef081 e0f8 29aed0515fa6 8d4f0e 7f4c }
            // n = 6, score = 100
            //   e221                 | push                edx
            //   a1????????05eef081     |     
            //   e0f8                 | clc                 
            //   29aed0515fa6         | cmpsb               byte ptr [esi], byte ptr es:[edi]
            //   8d4f0e               | outsb               dx, byte ptr [esi]
            //   7f4c                 | fcomp               dword ptr [ebx - 0x6b64d635]

    condition:
        7 of them and filesize < 117760
}