rule win_pandora_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.pandora."
        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.pandora"
        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 = { 0fb6c8 41c1e108 420fb68411401b0600 4433c8 41c1e108 418bc6 c1e808 }
            // n = 7, score = 100
            //   0fb6c8               | lea                 eax, [ebp - 0x29]
            //   41c1e108             | dec                 eax
            //   420fb68411401b0600     | lea    eax, [ebp - 0x29]
            //   4433c8               | dec                 ebp
            //   41c1e108             | mov                 ecx, esi
            //   418bc6               | dec                 eax
            //   c1e808               | mov                 ecx, dword ptr [ebp + 0x67]

        $sequence_1 = { 440bd0 410fb6410d 41c1e208 440bd0 410fb6410c 41c1e208 440bd0 }
            // n = 7, score = 100
            //   440bd0               | test                eax, eax
            //   410fb6410d           | jne                 0xa9e
            //   41c1e208             | pop                 esi
            //   440bd0               | dec                 eax
            //   410fb6410c           | sub                 esp, 0x28
            //   41c1e208             | dec                 eax
            //   440bd0               | lea                 edi, [esi + 0x78000]

        $sequence_2 = { bf94ffffff 8bc7 85c0 0f883c010000 488bcb 482bce 4883f901 }
            // n = 7, score = 100
            //   bf94ffffff           | mov                 dword ptr [edi + eax*4], edx
            //   8bc7                 | dec                 eax
            //   85c0                 | lea                 ecx, [ecx + 0x10]
            //   0f883c010000         | mov                 edx, dword ptr [ecx]
            //   488bcb               | inc                 ecx
            //   482bce               | mov                 eax, edi
            //   4883f901             | dec                 eax

        $sequence_3 = { 498db578100600 0f11442430 4903f1 4c8d542444 498bfb 0f1f00 443836 }
            // n = 7, score = 100
            //   498db578100600       | inc                 esp
            //   0f11442430           | add                 ebx, eax
            //   4903f1               | add                 ebx, edi
            //   4c8d542444           | inc                 ecx
            //   498bfb               | rol                 eax, 9
            //   0f1f00               | inc                 esp
            //   443836               | add                 eax, edi

        $sequence_4 = { 7ccf 418bd2 4c8d05c5c20500 41b90a000000 8bc2 418910 2480 }
            // n = 7, score = 100
            //   7ccf                 | dec                 eax
            //   418bd2               | sub                 esp, 0x48
            //   4c8d05c5c20500       | test                byte ptr [ecx + 0xa4], 0x10
            //   41b90a000000         | dec                 ebp
            //   8bc2                 | mov                 esp, ecx
            //   418910               | inc                 eax
            //   2480                 | push                ebx

        $sequence_5 = { 488d1df3fa0200 eb07 488d1dd2fa0200 4883a4249800000000 4084f6 740b b903000000 }
            // n = 7, score = 100
            //   488d1df3fa0200       | dec                 esp
            //   eb07                 | mov                 dword ptr [eax], esi
            //   488d1dd2fa0200       | dec                 ebp
            //   4883a4249800000000     | test    esi, esi
            //   4084f6               | jne                 0x2009
            //   740b                 | xor                 eax, eax
            //   b903000000           | ret                 

        $sequence_6 = { 4863c2 418911 4d8d4904 44890484 0fb6c2 02c0 0fb6c8 }
            // n = 7, score = 100
            //   4863c2               | js                  0x14ab
            //   418911               | nop                 dword ptr [eax + eax]
            //   4d8d4904             | dec                 esp
            //   44890484             | mov                 eax, edi
            //   0fb6c2               | dec                 eax
            //   02c0                 | lea                 edx, [ebp - 0x19]
            //   0fb6c8               | dec                 eax

        $sequence_7 = { 4133cb 41c1c802 03c3 8b5c2438 03c8 4403d1 8bca }
            // n = 7, score = 100
            //   4133cb               | test                ebx, ebx
            //   41c1c802             | jne                 0x1c9e
            //   03c3                 | dec                 eax
            //   8b5c2438             | lea                 ecx, [ebp - 0x31]
            //   03c8                 | mov                 ebx, eax
            //   4403d1               | test                eax, eax
            //   8bca                 | jne                 0x1a76

        $sequence_8 = { 41b801000000 498d542458 498d4c2458 e8???????? 8bd8 85c0 0f85d9010000 }
            // n = 7, score = 100
            //   41b801000000         | dec                 esp
            //   498d542458           | mov                 dword ptr [eax - 0x20], esi
            //   498d4c2458           | dec                 esp
            //   e8????????           |                     
            //   8bd8                 | mov                 esi, ecx
            //   85c0                 | dec                 esp
            //   0f85d9010000         | mov                 dword ptr [eax - 0x28], edi

        $sequence_9 = { 488d2d90150300 488d4d30 4533c0 baa00f0000 e8???????? 488b05???????? }
            // n = 6, score = 100
            //   488d2d90150300       | mov                 ebx, eax
            //   488d4d30             | jne                 0x44e
            //   4533c0               | dec                 eax
            //   baa00f0000           | lea                 ecx, [edi + 8]
            //   e8????????           |                     
            //   488b05????????       |                     

    condition:
        7 of them and filesize < 1032192
}