rule win_andromut_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.andromut."
        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.andromut"
        malpedia_rule_date = "20220805"
        malpedia_hash = "6ec06c64bcfdbeda64eff021c766b4ce34542b71"
        malpedia_version = "20220808"
        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 = { 75f9 2bca 51 6a00 57 e8???????? }
            // n = 6, score = 200
            //   75f9                 | jne                 0xfffffffb
            //   2bca                 | sub                 ecx, edx
            //   51                   | push                ecx
            //   6a00                 | push                0
            //   57                   | push                edi
            //   e8????????           |                     

        $sequence_1 = { 50 e8???????? 83c40c 8d8da4f9ffff 6a1f 5a }
            // n = 6, score = 200
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8d8da4f9ffff         | lea                 ecx, [ebp - 0x65c]
            //   6a1f                 | push                0x1f
            //   5a                   | pop                 edx

        $sequence_2 = { 8b441020 03c2 897df4 85ff 742f 8b30 33ff }
            // n = 7, score = 200
            //   8b441020             | mov                 eax, dword ptr [eax + edx + 0x20]
            //   03c2                 | add                 eax, edx
            //   897df4               | mov                 dword ptr [ebp - 0xc], edi
            //   85ff                 | test                edi, edi
            //   742f                 | je                  0x31
            //   8b30                 | mov                 esi, dword ptr [eax]
            //   33ff                 | xor                 edi, edi

        $sequence_3 = { 6a00 e8???????? ffb530f3ffff 83bd34f3ffff10 8d8520f3ffff 6a00 }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   e8????????           |                     
            //   ffb530f3ffff         | push                dword ptr [ebp - 0xcd0]
            //   83bd34f3ffff10       | cmp                 dword ptr [ebp - 0xccc], 0x10
            //   8d8520f3ffff         | lea                 eax, [ebp - 0xce0]
            //   6a00                 | push                0

        $sequence_4 = { 50 8995b8fbffff 898dbcfbffff e8???????? 83c40c 8d8dc0fbffff 6a05 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   8995b8fbffff         | mov                 dword ptr [ebp - 0x448], edx
            //   898dbcfbffff         | mov                 dword ptr [ebp - 0x444], ecx
            //   e8????????           |                     
            //   83c40c               | add                 esp, 0xc
            //   8d8dc0fbffff         | lea                 ecx, [ebp - 0x440]
            //   6a05                 | push                5

        $sequence_5 = { 8bc1 c1e10f d1e8 25ff7f0000 0bc1 23c7 0559d60000 }
            // n = 7, score = 200
            //   8bc1                 | mov                 eax, ecx
            //   c1e10f               | shl                 ecx, 0xf
            //   d1e8                 | shr                 eax, 1
            //   25ff7f0000           | and                 eax, 0x7fff
            //   0bc1                 | or                  eax, ecx
            //   23c7                 | and                 eax, edi
            //   0559d60000           | add                 eax, 0xd659

        $sequence_6 = { 0bc1 25ffff0000 48 357ee00000 05d26fffff 03c2 8bc8 }
            // n = 7, score = 200
            //   0bc1                 | or                  eax, ecx
            //   25ffff0000           | and                 eax, 0xffff
            //   48                   | dec                 eax
            //   357ee00000           | xor                 eax, 0xe07e
            //   05d26fffff           | add                 eax, 0xffff6fd2
            //   03c2                 | add                 eax, edx
            //   8bc8                 | mov                 ecx, eax

        $sequence_7 = { 03c6 8bc8 c1e003 c1e90d 83e107 0bc8 }
            // n = 6, score = 200
            //   03c6                 | add                 eax, esi
            //   8bc8                 | mov                 ecx, eax
            //   c1e003               | shl                 eax, 3
            //   c1e90d               | shr                 ecx, 0xd
            //   83e107               | and                 ecx, 7
            //   0bc8                 | or                  ecx, eax

        $sequence_8 = { 23c7 33c2 8bc8 c1e00f }
            // n = 4, score = 200
            //   23c7                 | and                 eax, edi
            //   33c2                 | xor                 eax, edx
            //   8bc8                 | mov                 ecx, eax
            //   c1e00f               | shl                 eax, 0xf

        $sequence_9 = { e8???????? 85c0 7417 50 ff15???????? }
            // n = 5, score = 200
            //   e8????????           |                     
            //   85c0                 | test                eax, eax
            //   7417                 | je                  0x19
            //   50                   | push                eax
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 368640
}