rule win_powersniff_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-07-11"
        version = "1"
        description = "Detects win.powersniff."
        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.powersniff"
        malpedia_rule_date = "20230705"
        malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41"
        malpedia_version = "20230715"
        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 = { 720c c705????????02000000 eb11 3d00400000 720a c705????????03000000 }
            // n = 6, score = 100
            //   720c                 | jb                  0xe
            //   c705????????02000000     |     
            //   eb11                 | jmp                 0x13
            //   3d00400000           | cmp                 eax, 0x4000
            //   720a                 | jb                  0xc
            //   c705????????03000000     |     

        $sequence_1 = { 83ec5c a1???????? 56 57 33f6 6a44 8945f8 }
            // n = 7, score = 100
            //   83ec5c               | sub                 esp, 0x5c
            //   a1????????           |                     
            //   56                   | push                esi
            //   57                   | push                edi
            //   33f6                 | xor                 esi, esi
            //   6a44                 | push                0x44
            //   8945f8               | mov                 dword ptr [ebp - 8], eax

        $sequence_2 = { e9???????? 51 53 55 57 }
            // n = 5, score = 100
            //   e9????????           |                     
            //   51                   | push                ecx
            //   53                   | push                ebx
            //   55                   | push                ebp
            //   57                   | push                edi

        $sequence_3 = { ff7614 ff15???????? 5f 5e 5d c21400 }
            // n = 6, score = 100
            //   ff7614               | push                dword ptr [esi + 0x14]
            //   ff15????????         |                     
            //   5f                   | pop                 edi
            //   5e                   | pop                 esi
            //   5d                   | pop                 ebp
            //   c21400               | ret                 0x14

        $sequence_4 = { 897c2410 393d???????? 7578 8b35???????? }
            // n = 4, score = 100
            //   897c2410             | mov                 dword ptr [esp + 0x10], edi
            //   393d????????         |                     
            //   7578                 | jne                 0x7a
            //   8b35????????         |                     

        $sequence_5 = { 0fb6f3 8b5df4 c1ea18 8b149590780010 3314b5907c0010 c1eb08 }
            // n = 6, score = 100
            //   0fb6f3               | movzx               esi, bl
            //   8b5df4               | mov                 ebx, dword ptr [ebp - 0xc]
            //   c1ea18               | shr                 edx, 0x18
            //   8b149590780010       | mov                 edx, dword ptr [edx*4 + 0x10007890]
            //   3314b5907c0010       | xor                 edx, dword ptr [esi*4 + 0x10007c90]
            //   c1eb08               | shr                 ebx, 8

        $sequence_6 = { 7f36 03ce 813950450000 752c }
            // n = 4, score = 100
            //   7f36                 | jg                  0x38
            //   03ce                 | add                 ecx, esi
            //   813950450000         | cmp                 dword ptr [ecx], 0x4550
            //   752c                 | jne                 0x2e

        $sequence_7 = { 8b75f0 33349d90840010 8bda 3330 c1eb08 8975f0 }
            // n = 6, score = 100
            //   8b75f0               | mov                 esi, dword ptr [ebp - 0x10]
            //   33349d90840010       | xor                 esi, dword ptr [ebx*4 + 0x10008490]
            //   8bda                 | mov                 ebx, edx
            //   3330                 | xor                 esi, dword ptr [eax]
            //   c1eb08               | shr                 ebx, 8
            //   8975f0               | mov                 dword ptr [ebp - 0x10], esi

        $sequence_8 = { 8d442410 50 8d442418 50 8974241c }
            // n = 5, score = 100
            //   8d442410             | lea                 eax, [esp + 0x10]
            //   50                   | push                eax
            //   8d442418             | lea                 eax, [esp + 0x18]
            //   50                   | push                eax
            //   8974241c             | mov                 dword ptr [esp + 0x1c], esi

        $sequence_9 = { eb51 6a00 68424d5352 8d45fc 50 }
            // n = 5, score = 100
            //   eb51                 | jmp                 0x53
            //   6a00                 | push                0
            //   68424d5352           | push                0x52534d42
            //   8d45fc               | lea                 eax, [ebp - 4]
            //   50                   | push                eax

    condition:
        7 of them and filesize < 90112
}