rule win_bumblebee_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2024-10-31"
        version = "1"
        description = "Detects win.bumblebee."
        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.bumblebee"
        malpedia_rule_date = "20241030"
        malpedia_hash = "26e26953c49c8efafbf72a38076855d578e0a2e4"
        malpedia_version = "20241030"
        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 = { 0f849b010000 be80030000 488d4c2470 448bc6 }
            // n = 4, score = 3100
            //   0f849b010000         | dec                 eax
            //   be80030000           | cmp                 ecx, 1
            //   488d4c2470           | dec                 eax
            //   448bc6               | mov                 ecx, dword ptr [edx]

        $sequence_1 = { 488b4108 488bd9 4183c9ff 4889442428 }
            // n = 4, score = 3100
            //   488b4108             | lea                 ecx, [0xdfc60]
            //   488bd9               | dec                 eax
            //   4183c9ff             | cmp                 eax, 0x1c
            //   4889442428           | ja                  0x28a

        $sequence_2 = { ff15???????? 90 33c0 488b5c2448 }
            // n = 4, score = 3100
            //   ff15????????         |                     
            //   90                   | lea                 eax, [edx - 0x37]
            //   33c0                 | mov                 dword ptr [esp + 0x20], 0x78
            //   488b5c2448           | dec                 esp

        $sequence_3 = { 4881ec20040000 488b05???????? 4833c4 48898518030000 4c8bf1 }
            // n = 5, score = 3100
            //   4881ec20040000       | mov                 ebp, esp
            //   488b05????????       |                     
            //   4833c4               | dec                 ecx
            //   48898518030000       | add                 ebp, esi
            //   4c8bf1               | inc                 ecx

        $sequence_4 = { b8c0000000 4803fe ba64860000 66395304 8d4810 0f44c1 }
            // n = 6, score = 3100
            //   b8c0000000           | lea                 eax, [0x2280b]
            //   4803fe               | dec                 eax
            //   ba64860000           | mov                 dword ptr [esp + 0x28], eax
            //   66395304             | dec                 eax
            //   8d4810               | mov                 dword ptr [esp + 0x20], ebx
            //   0f44c1               | je                  0x225

        $sequence_5 = { 498bce ffd0 85c0 0f8895000000 8b7b28 b8c0000000 4803fe }
            // n = 7, score = 3100
            //   498bce               | dec                 eax
            //   ffd0                 | mov                 dword ptr [ebp + 0xb10], 0x16
            //   85c0                 | dec                 eax
            //   0f8895000000         | lea                 eax, [0x1a25f4]
            //   8b7b28               | dec                 eax
            //   b8c0000000           | mov                 dword ptr [ebp + 0xb18], eax
            //   4803fe               | dec                 eax

        $sequence_6 = { 488bd8 c744243802000000 488d442450 4889442430 4c8bc6 488d842498000000 488bd5 }
            // n = 7, score = 3100
            //   488bd8               | inc                 ebp
            //   c744243802000000     | xor                 eax, eax
            //   488d442450           | dec                 eax
            //   4889442430           | mov                 esi, edx
            //   4c8bc6               | dec                 esp
            //   488d842498000000     | mov                 esi, ecx
            //   488bd5               | dec                 esp

        $sequence_7 = { 4885d2 7411 4883c208 4883c108 }
            // n = 4, score = 3100
            //   4885d2               | dec                 ecx
            //   7411                 | shr                 ecx, 0x1a
            //   4883c208             | inc                 ebp
            //   4883c108             | mov                 edx, eax

        $sequence_8 = { 48833b00 480f453b 488bcb e8???????? 488bc7 488b8d18030000 4833cc }
            // n = 7, score = 3100
            //   48833b00             | inc                 edx
            //   480f453b             | dec                 eax
            //   488bcb               | sub                 eax, edx
            //   e8????????           |                     
            //   488bc7               | dec                 eax
            //   488b8d18030000       | cmp                 eax, 1
            //   4833cc               | jae                 0x164

        $sequence_9 = { 33db 4d8bf0 4c8bea 48895d48 8bf1 48895dc8 33d2 }
            // n = 7, score = 3100
            //   33db                 | dec                 eax
            //   4d8bf0               | mov                 ecx, edi
            //   4c8bea               | mov                 dword ptr [esp + 0x20], 0xb3
            //   48895d48             | inc                 esp
            //   8bf1                 | mov                 eax, edx
            //   48895dc8             | dec                 esp
            //   33d2                 | lea                 ecx, [0xff460]

    condition:
        7 of them and filesize < 4825088
}

rule win_bumblebee_w0 {
    meta:
        author = "@AndreGironda"
        description = "BumbleBee / win.bumblebee"
        reference_md5 = "e6a046d1baa7cd2100bdf48102b8a144"
	    date = "March 29, 2022"
	    tlp = "White"

    malpedia_rule_date = "20220330"
    malpedia_hash = ""
	malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.bumblebee"
	malpedia_version = "20220330"
	malpedia_license = "CC BY-NC-SA 4.0"
	malpedia_sharing = "TLP:WHITE"
    strings:
	$hex_140001d53 = { 48 8b 05 06 44 00 00 41 81 ea 06 28 00 00 49 31 80 48 02 00 00 49 8b 80 c8 00 00 00 48 05 28 01 00 00 48 01 41 08 49 8b }
	$hex_18000927a = { 48 8d 4c 24 50 e8 cc cc ff ff 90 4c 8d 45 b0 48 8d 54 24 50 48 8d 8d 00 01 00 00 e8 26 d3 ff ff 90 48 8b 44 24 68 48 83 f8 10 72 4a 48 ff c0 48 }
    condition:
        any of them
}