rule win_minibrowse_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.minibrowse."
        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.minibrowse"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        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 = { 480335???????? 48b8e2603ff4395df8be 48034638 4c895c2420 4c89542428 ffd0 488b8c2490000000 }
            // n = 7, score = 100
            //   480335????????       |                     
            //   48b8e2603ff4395df8be     | dec    eax
            //   48034638             | mov                 edx, 0x100951de
            //   4c895c2420           | daa                 
            //   4c89542428           | call                0xb848b176
            //   ffd0                 | stc                 
            //   488b8c2490000000     | sub                 dword ptr [ecx + 0xc], esi

        $sequence_1 = { 8911 a801 7502 eb76 488b4c2430 48baa728895e60b786ac 480315???????? }
            // n = 7, score = 100
            //   8911                 | mov                 edi, 0x895a4df2
            //   a801                 | adc                 dword ptr [eax - 0x14fd8aff], ebp
            //   7502                 | jo                  0x82
            //   eb76                 | mov                 ecx, dword ptr [ebp - 0x38]
            //   488b4c2430           | dec                 eax
            //   48baa728895e60b786ac     | mov    eax, dword ptr [ecx]
            //   480315????????       |                     

        $sequence_2 = { 48b9ce93e58e6a5a462a 48030d???????? 8911 a801 0f8547f8ffff e9???????? 50 }
            // n = 7, score = 100
            //   48b9ce93e58e6a5a462a     | sub    cl, byte ptr [eax - 0x48]
            //   48030d????????       |                     
            //   8911                 | out                 0x20, eax
            //   a801                 | mov                 dword ptr [eax - 0xddd70aa], 0x10410348
            //   0f8547f8ffff         | call                eax
            //   e9????????           |                     
            //   50                   | mov                 edx, dword ptr [esp + 0x44]

        $sequence_3 = { 4883ec20 488daa80000000 488b4dc8 488b05???????? 48ba8e1191315beee731 488b0410 48ba1ee7120d163eea41 }
            // n = 7, score = 100
            //   4883ec20             | mov                 ecx, dword ptr [ebp - 0x50]
            //   488daa80000000       | dec                 eax
            //   488b4dc8             | mov                 edx, 0x664c0bcd
            //   488b05????????       |                     
            //   48ba8e1191315beee731     | out    dx, eax
            //   488b0410             | mov                 ch, 0x8d
            //   48ba1ee7120d163eea41     | push    ecx

        $sequence_4 = { 480305???????? 8b08 83c105 83e905 48b8815350e1f7179614 480305???????? 8908 }
            // n = 7, score = 100
            //   480305????????       |                     
            //   8b08                 | push                cs
            //   83c105               | mov                 dword ptr [eax], ecx
            //   83e905               | mov                 ecx, dword ptr [eax]
            //   48b8815350e1f7179614     | add    ecx, 5
            //   480305????????       |                     
            //   8908                 | sub                 ecx, 5

        $sequence_5 = { 48894c2420 488b4c2420 488d0553da0700 488901 4883c108 48ba296cc479161bf764 480315???????? }
            // n = 7, score = 100
            //   48894c2420           | dec                 eax
            //   488b4c2420           | mov                 ecx, dword ptr [esp + 0x20]
            //   488d0553da0700       | dec                 eax
            //   488901               | cmp                 eax, dword ptr [ecx]
            //   4883c108             | jae                 0x31a
            //   48ba296cc479161bf764     | dec    eax
            //   480315????????       |                     

        $sequence_6 = { 480315???????? 48b8b372f595351574f8 48034220 ffd0 48898424d8000000 4883bc24e000000000 0f84ad010000 }
            // n = 7, score = 100
            //   480315????????       |                     
            //   48b8b372f595351574f8     | mov    eax, dword ptr [esp + 0x28]
            //   48034220             | dec                 eax
            //   ffd0                 | mov                 edx, eax
            //   48898424d8000000     | dec                 eax
            //   4883bc24e000000000     | mov    eax, 0xaec2eba8
            //   0f84ad010000         | cmp                 bh, dl

        $sequence_7 = { 480305???????? 8908 48b8103178b3a851a993 480305???????? 8b08 83f12a 83f12a }
            // n = 7, score = 100
            //   480305????????       |                     
            //   8908                 | dec                 eax
            //   48b8103178b3a851a993     | mov    eax, 0xe5221202
            //   480305????????       |                     
            //   8b08                 | mov                 ch, 0x2b
            //   83f12a               | movsd               dword ptr es:[edi], dword ptr [esi]
            //   83f12a               | pop                 ds

        $sequence_8 = { 668908 48b8a6720885e83801e2 480305???????? 8b00 6bc003 b903000000 31d2 }
            // n = 7, score = 100
            //   668908               | js                  0x231
            //   48b8a6720885e83801e2     | adc    eax, 0x420348ef
            //   480305????????       |                     
            //   8b00                 | adc                 byte ptr [ebp - 0x3d], bl
            //   6bc003               | dec                 eax
            //   b903000000           | mov                 ecx, dword ptr [ebp - 0x38]
            //   31d2                 | dec                 eax

        $sequence_9 = { 488d4dd8 ffd0 488945d0 48b98790f8e3abd08f01 48030d???????? 48b8fce7365cb8517baf 48034108 }
            // n = 7, score = 100
            //   488d4dd8             | jmp                 0x13
            //   ffd0                 | dec                 eax
            //   488945d0             | mov                 ecx, 0x9a6c5e52
            //   48b98790f8e3abd08f01     | or    al, 0xd3
            //   48030d????????       |                     
            //   48b8fce7365cb8517baf     | pop    ebp
            //   48034108             | imul                ecx, dword ptr [eax - 0x48], 0x36

    condition:
        7 of them and filesize < 1779712
}