rule win_hermeticwiper_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-03-28"
        version = "1"
        description = "Detects win.hermeticwiper."
        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.hermeticwiper"
        malpedia_rule_date = "20230328"
        malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d"
        malpedia_version = "20230407"
        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 = { ff15???????? 89442424 85c0 744c 8b7c2410 }
            // n = 5, score = 200
            //   ff15????????         |                     
            //   89442424             | mov                 dword ptr [esp + 0x24], eax
            //   85c0                 | test                eax, eax
            //   744c                 | je                  0x4e
            //   8b7c2410             | mov                 edi, dword ptr [esp + 0x10]

        $sequence_1 = { 8be5 5d c3 8b4dfc 8d0476 }
            // n = 5, score = 200
            //   8be5                 | mov                 esp, ebp
            //   5d                   | pop                 ebp
            //   c3                   | ret                 
            //   8b4dfc               | mov                 ecx, dword ptr [ebp - 4]
            //   8d0476               | lea                 eax, [esi + esi*2]

        $sequence_2 = { 8b742420 83c404 85f6 0f846c010000 }
            // n = 4, score = 200
            //   8b742420             | mov                 esi, dword ptr [esp + 0x20]
            //   83c404               | add                 esp, 4
            //   85f6                 | test                esi, esi
            //   0f846c010000         | je                  0x172

        $sequence_3 = { 8d85e8fdffff 50 6803000080 ffd7 85c0 7552 8945fc }
            // n = 7, score = 200
            //   8d85e8fdffff         | lea                 eax, [ebp - 0x218]
            //   50                   | push                eax
            //   6803000080           | push                0x80000003
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax
            //   7552                 | jne                 0x54
            //   8945fc               | mov                 dword ptr [ebp - 4], eax

        $sequence_4 = { 56 ff15???????? 50 ff15???????? 85c0 7429 }
            // n = 6, score = 200
            //   56                   | push                esi
            //   ff15????????         |                     
            //   50                   | push                eax
            //   ff15????????         |                     
            //   85c0                 | test                eax, eax
            //   7429                 | je                  0x2b

        $sequence_5 = { 8b4e56 8b4652 894c2418 8d4c2414 }
            // n = 4, score = 200
            //   8b4e56               | mov                 ecx, dword ptr [esi + 0x56]
            //   8b4652               | mov                 eax, dword ptr [esi + 0x52]
            //   894c2418             | mov                 dword ptr [esp + 0x18], ecx
            //   8d4c2414             | lea                 ecx, [esp + 0x14]

        $sequence_6 = { 83ee02 eb02 8bf3 397df0 7531 6a5c 6a00 }
            // n = 7, score = 200
            //   83ee02               | sub                 esi, 2
            //   eb02                 | jmp                 4
            //   8bf3                 | mov                 esi, ebx
            //   397df0               | cmp                 dword ptr [ebp - 0x10], edi
            //   7531                 | jne                 0x33
            //   6a5c                 | push                0x5c
            //   6a00                 | push                0

        $sequence_7 = { 50 e8???????? 8b442428 83c418 5f 5e }
            // n = 6, score = 200
            //   50                   | push                eax
            //   e8????????           |                     
            //   8b442428             | mov                 eax, dword ptr [esp + 0x28]
            //   83c418               | add                 esp, 0x18
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi

        $sequence_8 = { b9???????? 8bc7 0f1f8000000000 668b10 663b11 751e }
            // n = 6, score = 200
            //   b9????????           |                     
            //   8bc7                 | mov                 eax, edi
            //   0f1f8000000000       | nop                 dword ptr [eax]
            //   668b10               | mov                 dx, word ptr [eax]
            //   663b11               | cmp                 dx, word ptr [ecx]
            //   751e                 | jne                 0x20

        $sequence_9 = { 68???????? 7407 68???????? eb05 68???????? ff35???????? ff15???????? }
            // n = 7, score = 200
            //   68????????           |                     
            //   7407                 | je                  9
            //   68????????           |                     
            //   eb05                 | jmp                 7
            //   68????????           |                     
            //   ff35????????         |                     
            //   ff15????????         |                     

    condition:
        7 of them and filesize < 247808
}