rule win_solarbot_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.solarbot"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { c60033 8b85e0f7ffff 83c006 c60000 ff95e0f7ffff ffb5e0f7ffff e8???????? }
            // n = 7, score = 300
            //   c60033               | mov                 byte ptr [eax], 0x33
            //   8b85e0f7ffff         | mov                 eax, dword ptr [ebp - 0x820]
            //   83c006               | add                 eax, 6
            //   c60000               | mov                 byte ptr [eax], 0
            //   ff95e0f7ffff         | call                dword ptr [ebp - 0x820]
            //   ffb5e0f7ffff         | push                dword ptr [ebp - 0x820]
            //   e8????????           |                     

        $sequence_1 = { 7428 8d45fc 50 6808020000 57 }
            // n = 5, score = 300
            //   7428                 | je                  0x2a
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax
            //   6808020000           | push                0x208
            //   57                   | push                edi

        $sequence_2 = { 0f847c020000 6a00 57 56 ff75e8 6aff 8b45e4 }
            // n = 7, score = 300
            //   0f847c020000         | je                  0x282
            //   6a00                 | push                0
            //   57                   | push                edi
            //   56                   | push                esi
            //   ff75e8               | push                dword ptr [ebp - 0x18]
            //   6aff                 | push                -1
            //   8b45e4               | mov                 eax, dword ptr [ebp - 0x1c]

        $sequence_3 = { 0f8438010000 c6854cfeffff00 6a00 6a01 8d854cfeffff 50 ffb500fcffff }
            // n = 7, score = 300
            //   0f8438010000         | je                  0x13e
            //   c6854cfeffff00       | mov                 byte ptr [ebp - 0x1b4], 0
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   8d854cfeffff         | lea                 eax, [ebp - 0x1b4]
            //   50                   | push                eax
            //   ffb500fcffff         | push                dword ptr [ebp - 0x400]

        $sequence_4 = { ff75e0 6a00 6a00 6a00 6a00 6a00 }
            // n = 6, score = 300
            //   ff75e0               | push                dword ptr [ebp - 0x20]
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0
            //   6a00                 | push                0

        $sequence_5 = { 8975f8 897dfc 8b7d08 b000 b300 }
            // n = 5, score = 300
            //   8975f8               | mov                 dword ptr [ebp - 8], esi
            //   897dfc               | mov                 dword ptr [ebp - 4], edi
            //   8b7d08               | mov                 edi, dword ptr [ebp + 8]
            //   b000                 | mov                 al, 0
            //   b300                 | mov                 bl, 0

        $sequence_6 = { 8b85e0fdffff 0385d0fdffff 8b583c 83bdccfdffff01 7532 }
            // n = 5, score = 300
            //   8b85e0fdffff         | mov                 eax, dword ptr [ebp - 0x220]
            //   0385d0fdffff         | add                 eax, dword ptr [ebp - 0x230]
            //   8b583c               | mov                 ebx, dword ptr [eax + 0x3c]
            //   83bdccfdffff01       | cmp                 dword ptr [ebp - 0x234], 1
            //   7532                 | jne                 0x34

        $sequence_7 = { 55 89e5 83ec0c 64a130000000 8b400c 8945f8 8b45f8 }
            // n = 7, score = 300
            //   55                   | push                ebp
            //   89e5                 | mov                 ebp, esp
            //   83ec0c               | sub                 esp, 0xc
            //   64a130000000         | mov                 eax, dword ptr fs:[0x30]
            //   8b400c               | mov                 eax, dword ptr [eax + 0xc]
            //   8945f8               | mov                 dword ptr [ebp - 8], eax
            //   8b45f8               | mov                 eax, dword ptr [ebp - 8]

        $sequence_8 = { 0f8484000000 6a00 6a0c ffb5dcfdffff 8d85f4fdffff 50 6aff }
            // n = 7, score = 300
            //   0f8484000000         | je                  0x8a
            //   6a00                 | push                0
            //   6a0c                 | push                0xc
            //   ffb5dcfdffff         | push                dword ptr [ebp - 0x224]
            //   8d85f4fdffff         | lea                 eax, [ebp - 0x20c]
            //   50                   | push                eax
            //   6aff                 | push                -1

        $sequence_9 = { 8985f4feffff 8b95f4feffff 8b4278 0385f0feffff 8985f8feffff 8b5018 }
            // n = 6, score = 300
            //   8985f4feffff         | mov                 dword ptr [ebp - 0x10c], eax
            //   8b95f4feffff         | mov                 edx, dword ptr [ebp - 0x10c]
            //   8b4278               | mov                 eax, dword ptr [edx + 0x78]
            //   0385f0feffff         | add                 eax, dword ptr [ebp - 0x110]
            //   8985f8feffff         | mov                 dword ptr [ebp - 0x108], eax
            //   8b5018               | mov                 edx, dword ptr [eax + 0x18]

    condition:
        7 of them and filesize < 204800
}