rule win_satana_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.satana."
        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.satana"
        malpedia_rule_date = "20230124"
        malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686"
        malpedia_version = "20230125"
        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 = { 99 bfff000000 f7ff 8a9258fd4000 }
            // n = 4, score = 100
            //   99                   | cdq                 
            //   bfff000000           | mov                 edi, 0xff
            //   f7ff                 | idiv                edi
            //   8a9258fd4000         | mov                 dl, byte ptr [edx + 0x40fd58]

        $sequence_1 = { 8b4508 8b0d???????? 0fb615???????? 83c40c 68???????? 8b3d???????? 8d7004 }
            // n = 7, score = 100
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   8b0d????????         |                     
            //   0fb615????????       |                     
            //   83c40c               | add                 esp, 0xc
            //   68????????           |                     
            //   8b3d????????         |                     
            //   8d7004               | lea                 esi, [eax + 4]

        $sequence_2 = { 8945e0 660fefc0 660fd600 660fd64008 660fd64010 }
            // n = 5, score = 100
            //   8945e0               | mov                 dword ptr [ebp - 0x20], eax
            //   660fefc0             | pxor                xmm0, xmm0
            //   660fd600             | movq                qword ptr [eax], xmm0
            //   660fd64008           | movq                qword ptr [eax + 8], xmm0
            //   660fd64010           | movq                qword ptr [eax + 0x10], xmm0

        $sequence_3 = { ff15???????? a3???????? 85c0 7409 ffd0 }
            // n = 5, score = 100
            //   ff15????????         |                     
            //   a3????????           |                     
            //   85c0                 | test                eax, eax
            //   7409                 | je                  0xb
            //   ffd0                 | call                eax

        $sequence_4 = { 0fb64dff 0fb689a83f4100 884dff 8b5dfc }
            // n = 4, score = 100
            //   0fb64dff             | movzx               ecx, byte ptr [ebp - 1]
            //   0fb689a83f4100       | movzx               ecx, byte ptr [ecx + 0x413fa8]
            //   884dff               | mov                 byte ptr [ebp - 1], cl
            //   8b5dfc               | mov                 ebx, dword ptr [ebp - 4]

        $sequence_5 = { 83ffff 7454 53 56 }
            // n = 4, score = 100
            //   83ffff               | cmp                 edi, -1
            //   7454                 | je                  0x56
            //   53                   | push                ebx
            //   56                   | push                esi

        $sequence_6 = { e8???????? f30f7e05???????? 8a0d???????? 660fd645e8 f30f7e05???????? 83c40c 660fd645f0 }
            // n = 7, score = 100
            //   e8????????           |                     
            //   f30f7e05????????     |                     
            //   8a0d????????         |                     
            //   660fd645e8           | movq                qword ptr [ebp - 0x18], xmm0
            //   f30f7e05????????     |                     
            //   83c40c               | add                 esp, 0xc
            //   660fd645f0           | movq                qword ptr [ebp - 0x10], xmm0

        $sequence_7 = { 50 e8???????? 83c404 68???????? ff15???????? 6a4e }
            // n = 6, score = 100
            //   50                   | push                eax
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   68????????           |                     
            //   ff15????????         |                     
            //   6a4e                 | push                0x4e

        $sequence_8 = { 8bf8 83ffff 7454 53 56 6a00 57 }
            // n = 7, score = 100
            //   8bf8                 | mov                 edi, eax
            //   83ffff               | cmp                 edi, -1
            //   7454                 | je                  0x56
            //   53                   | push                ebx
            //   56                   | push                esi
            //   6a00                 | push                0
            //   57                   | push                edi

        $sequence_9 = { 8a11 3a16 7563 83f801 7615 8a5101 }
            // n = 6, score = 100
            //   8a11                 | mov                 dl, byte ptr [ecx]
            //   3a16                 | cmp                 dl, byte ptr [esi]
            //   7563                 | jne                 0x65
            //   83f801               | cmp                 eax, 1
            //   7615                 | jbe                 0x17
            //   8a5101               | mov                 dl, byte ptr [ecx + 1]

    condition:
        7 of them and filesize < 221184
}