rule win_sendsafe_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2023-01-25"
        version = "1"
        description = "Detects win.sendsafe."
        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.sendsafe"
        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 = { ffd2 83c404 8945fc 837dfcff 7504 33c0 eb0d }
            // n = 7, score = 200
            //   ffd2                 | call                edx
            //   83c404               | add                 esp, 4
            //   8945fc               | mov                 dword ptr [ebp - 4], eax
            //   837dfcff             | cmp                 dword ptr [ebp - 4], -1
            //   7504                 | jne                 6
            //   33c0                 | xor                 eax, eax
            //   eb0d                 | jmp                 0xf

        $sequence_1 = { e9???????? c745e45c945b00 a1???????? eb5e ff775c 56 e8???????? }
            // n = 7, score = 200
            //   e9????????           |                     
            //   c745e45c945b00       | mov                 dword ptr [ebp - 0x1c], 0x5b945c
            //   a1????????           |                     
            //   eb5e                 | jmp                 0x60
            //   ff775c               | push                dword ptr [edi + 0x5c]
            //   56                   | push                esi
            //   e8????????           |                     

        $sequence_2 = { 7509 c745a001000000 eb07 c745a000000000 0fb655a0 85d2 7516 }
            // n = 7, score = 200
            //   7509                 | jne                 0xb
            //   c745a001000000       | mov                 dword ptr [ebp - 0x60], 1
            //   eb07                 | jmp                 9
            //   c745a000000000       | mov                 dword ptr [ebp - 0x60], 0
            //   0fb655a0             | movzx               edx, byte ptr [ebp - 0x60]
            //   85d2                 | test                edx, edx
            //   7516                 | jne                 0x18

        $sequence_3 = { eb07 c745f800000000 0fb655f8 85d2 7417 8b4508 83781410 }
            // n = 7, score = 200
            //   eb07                 | jmp                 9
            //   c745f800000000       | mov                 dword ptr [ebp - 8], 0
            //   0fb655f8             | movzx               edx, byte ptr [ebp - 8]
            //   85d2                 | test                edx, edx
            //   7417                 | je                  0x19
            //   8b4508               | mov                 eax, dword ptr [ebp + 8]
            //   83781410             | cmp                 dword ptr [eax + 0x14], 0x10

        $sequence_4 = { e8???????? 83c408 8985f8feffff 83bdf8feffff00 7430 8b8df8feffff c60100 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c408               | add                 esp, 8
            //   8985f8feffff         | mov                 dword ptr [ebp - 0x108], eax
            //   83bdf8feffff00       | cmp                 dword ptr [ebp - 0x108], 0
            //   7430                 | je                  0x32
            //   8b8df8feffff         | mov                 ecx, dword ptr [ebp - 0x108]
            //   c60100               | mov                 byte ptr [ecx], 0

        $sequence_5 = { f20f1045e4 f20f5805???????? f20f1145e4 f20f10459c 660f2f45e4 0f87b0fdffff f20f1045dc }
            // n = 7, score = 200
            //   f20f1045e4           | movsd               xmm0, qword ptr [ebp - 0x1c]
            //   f20f5805????????     |                     
            //   f20f1145e4           | movsd               qword ptr [ebp - 0x1c], xmm0
            //   f20f10459c           | movsd               xmm0, qword ptr [ebp - 0x64]
            //   660f2f45e4           | comisd              xmm0, xmmword ptr [ebp - 0x1c]
            //   0f87b0fdffff         | ja                  0xfffffdb6
            //   f20f1045dc           | movsd               xmm0, qword ptr [ebp - 0x24]

        $sequence_6 = { e8???????? 83c404 8985a813ffff 8b85c413ffff 0fbe08 83f90d 7537 }
            // n = 7, score = 200
            //   e8????????           |                     
            //   83c404               | add                 esp, 4
            //   8985a813ffff         | mov                 dword ptr [ebp - 0xec58], eax
            //   8b85c413ffff         | mov                 eax, dword ptr [ebp - 0xec3c]
            //   0fbe08               | movsx               ecx, byte ptr [eax]
            //   83f90d               | cmp                 ecx, 0xd
            //   7537                 | jne                 0x39

        $sequence_7 = { e9???????? e8???????? 8bd0 89542434 85d2 7511 684f060000 }
            // n = 7, score = 200
            //   e9????????           |                     
            //   e8????????           |                     
            //   8bd0                 | mov                 edx, eax
            //   89542434             | mov                 dword ptr [esp + 0x34], edx
            //   85d2                 | test                edx, edx
            //   7511                 | jne                 0x13
            //   684f060000           | push                0x64f

        $sequence_8 = { ffb0f0000000 6a0d 56 e8???????? 83c410 85c0 0f8e23020000 }
            // n = 7, score = 200
            //   ffb0f0000000         | push                dword ptr [eax + 0xf0]
            //   6a0d                 | push                0xd
            //   56                   | push                esi
            //   e8????????           |                     
            //   83c410               | add                 esp, 0x10
            //   85c0                 | test                eax, eax
            //   0f8e23020000         | jle                 0x229

        $sequence_9 = { ff15???????? 8b4df8 2b4118 6955f460ea0000 3bc2 771a 837de800 }
            // n = 7, score = 200
            //   ff15????????         |                     
            //   8b4df8               | mov                 ecx, dword ptr [ebp - 8]
            //   2b4118               | sub                 eax, dword ptr [ecx + 0x18]
            //   6955f460ea0000       | imul                edx, dword ptr [ebp - 0xc], 0xea60
            //   3bc2                 | cmp                 eax, edx
            //   771a                 | ja                  0x1c
            //   837de800             | cmp                 dword ptr [ebp - 0x18], 0

    condition:
        7 of them and filesize < 3743744
}