rule win_hermeticwiper_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        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 = "20260422"
        malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14"
        malpedia_version = "20260504"
        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 = { 33d2 f7f1 89459c ffd3 8b3d???????? 50 }
            // n = 6, score = 200
            //   33d2                 | xor                 edx, edx
            //   f7f1                 | div                 ecx
            //   89459c               | mov                 dword ptr [ebp - 0x64], eax
            //   ffd3                 | call                ebx
            //   8b3d????????         |                     
            //   50                   | push                eax

        $sequence_1 = { 8d5710 894c244c 8b7f08 89542430 8d54245c 8b4c2430 57 }
            // n = 7, score = 200
            //   8d5710               | lea                 edx, [edi + 0x10]
            //   894c244c             | mov                 dword ptr [esp + 0x4c], ecx
            //   8b7f08               | mov                 edi, dword ptr [edi + 8]
            //   89542430             | mov                 dword ptr [esp + 0x30], edx
            //   8d54245c             | lea                 edx, [esp + 0x5c]
            //   8b4c2430             | mov                 ecx, dword ptr [esp + 0x30]
            //   57                   | push                edi

        $sequence_2 = { 8b4de4 897060 897864 895858 }
            // n = 4, score = 200
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   897060               | mov                 dword ptr [eax + 0x60], esi
            //   897864               | mov                 dword ptr [eax + 0x64], edi
            //   895858               | mov                 dword ptr [eax + 0x58], ebx

        $sequence_3 = { 50 53 ff15???????? 8bf0 85f6 0f88bf000000 }
            // n = 6, score = 200
            //   50                   | push                eax
            //   53                   | push                ebx
            //   ff15????????         |                     
            //   8bf0                 | mov                 esi, eax
            //   85f6                 | test                esi, esi
            //   0f88bf000000         | js                  0xc5

        $sequence_4 = { 8b7c2414 83c404 e9???????? 8b7c2410 e9???????? }
            // n = 5, score = 200
            //   8b7c2414             | mov                 edi, dword ptr [esp + 0x14]
            //   83c404               | add                 esp, 4
            //   e9????????           |                     
            //   8b7c2410             | mov                 edi, dword ptr [esp + 0x10]
            //   e9????????           |                     

        $sequence_5 = { 894854 8b4de4 897060 897864 895858 }
            // n = 5, score = 200
            //   894854               | mov                 dword ptr [eax + 0x54], ecx
            //   8b4de4               | mov                 ecx, dword ptr [ebp - 0x1c]
            //   897060               | mov                 dword ptr [eax + 0x60], esi
            //   897864               | mov                 dword ptr [eax + 0x64], edi
            //   895858               | mov                 dword ptr [eax + 0x58], ebx

        $sequence_6 = { 3931 762b 8d7918 6a00 52 ff7704 }
            // n = 6, score = 200
            //   3931                 | cmp                 dword ptr [ecx], esi
            //   762b                 | jbe                 0x2d
            //   8d7918               | lea                 edi, [ecx + 0x18]
            //   6a00                 | push                0
            //   52                   | push                edx
            //   ff7704               | push                dword ptr [edi + 4]

        $sequence_7 = { 8bc8 8bfa 8b45e8 3bc3 }
            // n = 4, score = 200
            //   8bc8                 | mov                 ecx, eax
            //   8bfa                 | mov                 edi, edx
            //   8b45e8               | mov                 eax, dword ptr [ebp - 0x18]
            //   3bc3                 | cmp                 eax, ebx

        $sequence_8 = { 50 ff15???????? 8d8578fcffff 8d5002 668b08 83c002 6685c9 }
            // n = 7, score = 200
            //   50                   | push                eax
            //   ff15????????         |                     
            //   8d8578fcffff         | lea                 eax, [ebp - 0x388]
            //   8d5002               | lea                 edx, [eax + 2]
            //   668b08               | mov                 cx, word ptr [eax]
            //   83c002               | add                 eax, 2
            //   6685c9               | test                cx, cx

        $sequence_9 = { 8d4c2414 68???????? 51 8944241c ffd7 85c0 7509 }
            // n = 7, score = 200
            //   8d4c2414             | lea                 ecx, [esp + 0x14]
            //   68????????           |                     
            //   51                   | push                ecx
            //   8944241c             | mov                 dword ptr [esp + 0x1c], eax
            //   ffd7                 | call                edi
            //   85c0                 | test                eax, eax
            //   7509                 | jne                 0xb

    condition:
        7 of them and filesize < 247808
}