rule win_lilith_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2022-08-05"
        version = "1"
        description = "Detects win.lilith."
        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.lilith"
        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 = { 8b0d???????? e8???????? 6a00 6a01 ff37 ffd3 }
            // n = 6, score = 200
            //   8b0d????????         |                     
            //   e8????????           |                     
            //   6a00                 | push                0
            //   6a01                 | push                1
            //   ff37                 | push                dword ptr [edi]
            //   ffd3                 | call                ebx

        $sequence_1 = { 8bf1 8b4690 8d7e90 8b4004 c744309048ef4200 8b07 8b4804 }
            // n = 7, score = 200
            //   8bf1                 | mov                 esi, ecx
            //   8b4690               | mov                 eax, dword ptr [esi - 0x70]
            //   8d7e90               | lea                 edi, [esi - 0x70]
            //   8b4004               | mov                 eax, dword ptr [eax + 4]
            //   c744309048ef4200     | mov                 dword ptr [eax + esi - 0x70], 0x42ef48
            //   8b07                 | mov                 eax, dword ptr [edi]
            //   8b4804               | mov                 ecx, dword ptr [eax + 4]

        $sequence_2 = { 7831 8b1cc5d4984200 6a55 53 e8???????? 8bf8 59 }
            // n = 7, score = 200
            //   7831                 | js                  0x33
            //   8b1cc5d4984200       | mov                 ebx, dword ptr [eax*8 + 0x4298d4]
            //   6a55                 | push                0x55
            //   53                   | push                ebx
            //   e8????????           |                     
            //   8bf8                 | mov                 edi, eax
            //   59                   | pop                 ecx

        $sequence_3 = { 75f9 2bc2 50 8d8564ffffff 50 8d8d44ffffff e8???????? }
            // n = 7, score = 200
            //   75f9                 | jne                 0xfffffffb
            //   2bc2                 | sub                 eax, edx
            //   50                   | push                eax
            //   8d8564ffffff         | lea                 eax, [ebp - 0x9c]
            //   50                   | push                eax
            //   8d8d44ffffff         | lea                 ecx, [ebp - 0xbc]
            //   e8????????           |                     

        $sequence_4 = { e8???????? 83781408 7202 8b00 51 8bd6 }
            // n = 6, score = 200
            //   e8????????           |                     
            //   83781408             | cmp                 dword ptr [eax + 0x14], 8
            //   7202                 | jb                  4
            //   8b00                 | mov                 eax, dword ptr [eax]
            //   51                   | push                ecx
            //   8bd6                 | mov                 edx, esi

        $sequence_5 = { c745e498324200 50 8945fc 8d45e4 68???????? 50 }
            // n = 6, score = 200
            //   c745e498324200       | mov                 dword ptr [ebp - 0x1c], 0x423298
            //   50                   | push                eax
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   8d45e4               | lea                 eax, [ebp - 0x1c]
            //   68????????           |                     
            //   50                   | push                eax

        $sequence_6 = { 8bd7 c1fa06 8934b8 8bc7 83e03f 6bc830 8b0495a84b4300 }
            // n = 7, score = 200
            //   8bd7                 | mov                 edx, edi
            //   c1fa06               | sar                 edx, 6
            //   8934b8               | mov                 dword ptr [eax + edi*4], esi
            //   8bc7                 | mov                 eax, edi
            //   83e03f               | and                 eax, 0x3f
            //   6bc830               | imul                ecx, eax, 0x30
            //   8b0495a84b4300       | mov                 eax, dword ptr [edx*4 + 0x434ba8]

        $sequence_7 = { ff15???????? 33c0 c7471407000000 c7471000000000 668907 663903 }
            // n = 6, score = 200
            //   ff15????????         |                     
            //   33c0                 | xor                 eax, eax
            //   c7471407000000       | mov                 dword ptr [edi + 0x14], 7
            //   c7471000000000       | mov                 dword ptr [edi + 0x10], 0
            //   668907               | mov                 word ptr [edi], ax
            //   663903               | cmp                 word ptr [ebx], ax

        $sequence_8 = { 6a00 57 56 ff15???????? ff75a0 8b35???????? }
            // n = 6, score = 200
            //   6a00                 | push                0
            //   57                   | push                edi
            //   56                   | push                esi
            //   ff15????????         |                     
            //   ff75a0               | push                dword ptr [ebp - 0x60]
            //   8b35????????         |                     

        $sequence_9 = { 6a00 8d4508 c745e40f000000 50 }
            // n = 4, score = 200
            //   6a00                 | push                0
            //   8d4508               | lea                 eax, [ebp + 8]
            //   c745e40f000000       | mov                 dword ptr [ebp - 0x1c], 0xf
            //   50                   | push                eax

    condition:
        7 of them and filesize < 499712
}