rule win_fickerstealer_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2020-12-22"
        version = "1"
        description = "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.fickerstealer"
        malpedia_rule_date = "20201222"
        malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130"
        malpedia_version = "20201023"
        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 = { 899d94fdffff 8b9d74ffffff 899d98fdffff 8b5dec 899d9cfdffff 8b5dcc 899da0fdffff }
            // n = 7, score = 100
            //   899d94fdffff         | mov                 dword ptr [ebp - 0x26c], ebx
            //   8b9d74ffffff         | mov                 ebx, dword ptr [ebp - 0x8c]
            //   899d98fdffff         | mov                 dword ptr [ebp - 0x268], ebx
            //   8b5dec               | mov                 ebx, dword ptr [ebp - 0x14]
            //   899d9cfdffff         | mov                 dword ptr [ebp - 0x264], ebx
            //   8b5dcc               | mov                 ebx, dword ptr [ebp - 0x34]
            //   899da0fdffff         | mov                 dword ptr [ebp - 0x260], ebx

        $sequence_1 = { 89460c 31f6 eb3b 8bb42458030000 8b942454030000 898c2404070000 89842408070000 }
            // n = 7, score = 100
            //   89460c               | mov                 dword ptr [esi + 0xc], eax
            //   31f6                 | xor                 esi, esi
            //   eb3b                 | jmp                 0x3d
            //   8bb42458030000       | mov                 esi, dword ptr [esp + 0x358]
            //   8b942454030000       | mov                 edx, dword ptr [esp + 0x354]
            //   898c2404070000       | mov                 dword ptr [esp + 0x704], ecx
            //   89842408070000       | mov                 dword ptr [esp + 0x708], eax

        $sequence_2 = { 56 0fb6450c 8b4d10 8b5508 31f6 46 }
            // n = 6, score = 100
            //   56                   | push                esi
            //   0fb6450c             | movzx               eax, byte ptr [ebp + 0xc]
            //   8b4d10               | mov                 ecx, dword ptr [ebp + 0x10]
            //   8b5508               | mov                 edx, dword ptr [ebp + 8]
            //   31f6                 | xor                 esi, esi
            //   46                   | inc                 esi

        $sequence_3 = { 59 89d3 eba1 c644240803 eb2f 8b44241c 8b4c2420 }
            // n = 7, score = 100
            //   59                   | pop                 ecx
            //   89d3                 | mov                 ebx, edx
            //   eba1                 | jmp                 0xffffffa3
            //   c644240803           | mov                 byte ptr [esp + 8], 3
            //   eb2f                 | jmp                 0x31
            //   8b44241c             | mov                 eax, dword ptr [esp + 0x1c]
            //   8b4c2420             | mov                 ecx, dword ptr [esp + 0x20]

        $sequence_4 = { f20f1145e4 8b4008 8945ec 837de400 0f84a6000000 8b45ec f20f1045e4 }
            // n = 7, score = 100
            //   f20f1145e4           | movsd               qword ptr [ebp - 0x1c], xmm0
            //   8b4008               | mov                 eax, dword ptr [eax + 8]
            //   8945ec               | mov                 dword ptr [ebp - 0x14], eax
            //   837de400             | cmp                 dword ptr [ebp - 0x1c], 0
            //   0f84a6000000         | je                  0xac
            //   8b45ec               | mov                 eax, dword ptr [ebp - 0x14]
            //   f20f1045e4           | movsd               xmm0, qword ptr [ebp - 0x1c]

        $sequence_5 = { f20f104714 f20f11442470 f20f10470c f20f11442468 f20f104704 f20f11442460 0f8418030000 }
            // n = 7, score = 100
            //   f20f104714           | movsd               xmm0, qword ptr [edi + 0x14]
            //   f20f11442470         | movsd               qword ptr [esp + 0x70], xmm0
            //   f20f10470c           | movsd               xmm0, qword ptr [edi + 0xc]
            //   f20f11442468         | movsd               qword ptr [esp + 0x68], xmm0
            //   f20f104704           | movsd               xmm0, qword ptr [edi + 4]
            //   f20f11442460         | movsd               qword ptr [esp + 0x60], xmm0
            //   0f8418030000         | je                  0x31e

        $sequence_6 = { 8d8424a80a0000 50 53 e8???????? 50 57 e8???????? }
            // n = 7, score = 100
            //   8d8424a80a0000       | lea                 eax, [esp + 0xaa8]
            //   50                   | push                eax
            //   53                   | push                ebx
            //   e8????????           |                     
            //   50                   | push                eax
            //   57                   | push                edi
            //   e8????????           |                     

        $sequence_7 = { ebd0 8db424001d0000 68f0000000 8d8424a4040000 50 56 e8???????? }
            // n = 7, score = 100
            //   ebd0                 | jmp                 0xffffffd2
            //   8db424001d0000       | lea                 esi, [esp + 0x1d00]
            //   68f0000000           | push                0xf0
            //   8d8424a4040000       | lea                 eax, [esp + 0x4a4]
            //   50                   | push                eax
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_8 = { e8???????? c7471001000000 f20f1045e8 f20f114610 f20f1045d8 f20f104de0 f20f114e08 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   c7471001000000       | mov                 dword ptr [edi + 0x10], 1
            //   f20f1045e8           | movsd               xmm0, qword ptr [ebp - 0x18]
            //   f20f114610           | movsd               qword ptr [esi + 0x10], xmm0
            //   f20f1045d8           | movsd               xmm0, qword ptr [ebp - 0x28]
            //   f20f104de0           | movsd               xmm1, qword ptr [ebp - 0x20]
            //   f20f114e08           | movsd               qword ptr [esi + 8], xmm1

        $sequence_9 = { 31f0 8945a4 8b4738 31c6 8945c8 8b45a8 8975d0 }
            // n = 7, score = 100
            //   31f0                 | xor                 eax, esi
            //   8945a4               | mov                 dword ptr [ebp - 0x5c], eax
            //   8b4738               | mov                 eax, dword ptr [edi + 0x38]
            //   31c6                 | xor                 esi, eax
            //   8945c8               | mov                 dword ptr [ebp - 0x38], eax
            //   8b45a8               | mov                 eax, dword ptr [ebp - 0x58]
            //   8975d0               | mov                 dword ptr [ebp - 0x30], esi

    condition:
        7 of them and filesize < 598016
}