rule win_eddiestealer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-05-04"
        version = "1"
        description = "Detects win.eddiestealer."
        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.eddiestealer"
        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 = { 4c897110 48c7411801000000 e8???????? 83bc248000000006 0f8578260000 e8???????? 488b4808 }
            // n = 7, score = 100
            //   4c897110             | dec                 eax
            //   48c7411801000000     | lea                 edi, [esp + 0x270]
            //   e8????????           |                     
            //   83bc248000000006     | dec                 eax
            //   0f8578260000         | mov                 ecx, edi
            //   e8????????           |                     
            //   488b4808             | dec                 eax

        $sequence_1 = { c702818a2dbe 488d442470 8b10 e8???????? 0f29b424b0000000 0f29b424c0000000 0f11b424cc000000 }
            // n = 7, score = 100
            //   c702818a2dbe         | lea                 ecx, [esp + 0x40]
            //   488d442470           | inc                 ecx
            //   8b10                 | cmp                 dword ptr [edi], 6
            //   e8????????           |                     
            //   0f29b424b0000000     | jne                 0x450
            //   0f29b424c0000000     | mov                 byte ptr [esi], 1
            //   0f11b424cc000000     | mov                 byte ptr [esi + 1], bl

        $sequence_2 = { e8???????? b003 31c9 483b0b 701d 488b442450 48894628 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   b003                 | lea                 eax, [0x36c24]
            //   31c9                 | jne                 0x11c5
            //   483b0b               | dec                 eax
            //   701d                 | mov                 ecx, esi
            //   488b442450           | dec                 eax
            //   48894628             | mov                 edx, ebx

        $sequence_3 = { 660f6f842410010000 f30f7f02 488b8c241e010000 48894a0e 4c8d8424d0030000 498900 49895008 }
            // n = 7, score = 100
            //   660f6f842410010000     | pop    esp
            //   f30f7f02             | inc                 ecx
            //   488b8c241e010000     | pop                 ebp
            //   48894a0e             | dec                 esp
            //   4c8d8424d0030000     | mov                 dword ptr [esi], esp
            //   498900               | dec                 eax
            //   49895008             | mov                 dword ptr [esi + 8], ebp

        $sequence_4 = { 89c2 d1c2 31c2 b8311b0000 29d0 25f9ff0000 4801c8 }
            // n = 7, score = 100
            //   89c2                 | dec                 esp
            //   d1c2                 | mov                 ecx, edx
            //   31c2                 | dec                 ecx
            //   b8311b0000           | cmova               ecx, ebx
            //   29d0                 | inc                 ebp
            //   25f9ff0000           | test                bh, bh
            //   4801c8               | dec                 esp

        $sequence_5 = { 81fa00fc0000 0f8270010000 c745fc00000000 4983c504 81e1ff030000 c1e110 25ff030000 }
            // n = 7, score = 100
            //   81fa00fc0000         | mov                 edx, esi
            //   0f8270010000         | dec                 ebp
            //   c745fc00000000       | mov                 eax, ebp
            //   4983c504             | dec                 esp
            //   81e1ff030000         | mov                 ecx, ebp
            //   c1e110               | dec                 esp
            //   25ff030000           | mov                 eax, dword ptr [esp + 0x1a8]

        $sequence_6 = { 488945c0 48894610 0f1106 488d155b420200 4889f0 4883c478 5e }
            // n = 7, score = 100
            //   488945c0             | inc                 esp
            //   48894610             | xor                 eax, eax
            //   0f1106               | dec                 eax
            //   488d155b420200       | add                 eax, ecx
            //   4889f0               | ret                 
            //   4883c478             | inc                 edx
            //   5e                   | movzx               eax, dx

        $sequence_7 = { 488901 4c8d442440 498908 488d05ee200400 4889442420 488d0d46fd0400 4c8d0db3270300 }
            // n = 7, score = 100
            //   488901               | mov                 dword ptr [eax], ecx
            //   4c8d442440           | dec                 eax
            //   498908               | lea                 edx, [esp + 0x260]
            //   488d05ee200400       | dec                 eax
            //   4889442420           | mov                 ecx, dword ptr [edx + 0x30]
            //   488d0d46fd0400       | dec                 esp
            //   4c8d0db3270300       | lea                 eax, [esp + 0x708]

        $sequence_8 = { ba01000000 488d4c2458 4531c0 e8???????? 488d8c2410010000 4889da e8???????? }
            // n = 7, score = 100
            //   ba01000000           | inc                 ecx
            //   488d4c2458           | test                cl, 1
            //   4531c0               | je                  0x1c16
            //   e8????????           |                     
            //   488d8c2410010000     | inc                 esp
            //   4889da               | movzx               ecx, byte ptr [edx + ecx]
            //   e8????????           |                     

        $sequence_9 = { e8???????? 4889f1 e8???????? 4885c0 0f8550170000 48b80100000002000000 4c8d6570 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   4889f1               | mov                 dword ptr [ebp + 0x1fb0], eax
            //   e8????????           |                     
            //   4885c0               | pop                 edi
            //   0f8550170000         | pop                 esi
            //   48b80100000002000000     | inc    ecx
            //   4c8d6570             | pop                 esi

    condition:
        7 of them and filesize < 1316864
}