There is no description at this point.
rule win_noxplayer_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.noxplayer." 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.noxplayer" malpedia_rule_date = "20231130" malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351" malpedia_version = "20230808" 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 = { 488941b0 488b42b8 41b8a8000000 488941b8 488b42c0 488941c0 8b42c8 } // n = 7, score = 100 // 488941b0 | cmp byte ptr [ebx + 0x29], 0 // 488b42b8 | dec esp // 41b8a8000000 | mov eax, ebx // 488941b8 | jne 0x1f3 // 488b42c0 | dec eax // 488941c0 | mov eax, dword ptr [ebx + 0x10] // 8b42c8 | cmp byte ptr [eax + 0x29], 0 $sequence_1 = { 413bd0 7511 48ffc1 4883c004 4883f904 7ce7 32c0 } // n = 7, score = 100 // 413bd0 | dec eax // 7511 | mov ecx, esi // 48ffc1 | dec eax // 4883c004 | mov eax, dword ptr [esi + 0x38] // 4883f904 | dec eax // 7ce7 | mov ebx, dword ptr [eax] // 32c0 | dec esp $sequence_2 = { 4803c1 48898398000000 488b4350 488b4818 48898bb0000000 0f28742470 440f28442460 } // n = 7, score = 100 // 4803c1 | je 0xecb // 48898398000000 | mov dword ptr [esp + 0x58], 0x40 // 488b4350 | inc esp // 488b4818 | mov dword ptr [esp + 0x60], esp // 48898bb0000000 | dec esp // 0f28742470 | lea eax, [esp + 0x58] // 440f28442460 | dec eax $sequence_3 = { e8???????? 488d542450 b904010000 ff15???????? 4c8d05403b0300 488d4c2450 ba04010000 } // n = 7, score = 100 // e8???????? | // 488d542450 | dec eax // b904010000 | mov dword ptr [ebx + 0x10], edi // ff15???????? | // 4c8d05403b0300 | dec eax // 488d4c2450 | mov edx, dword ptr [esi + 8] // ba04010000 | dec eax $sequence_4 = { 4c8d4e34 4c8b442458 488bd6 488b4e58 e8???????? 488d5614 488b4e50 } // n = 7, score = 100 // 4c8d4e34 | dec eax // 4c8b442458 | mov eax, dword ptr [ecx + 0x1f0] // 488bd6 | inc ecx // 488b4e58 | push esp // e8???????? | // 488d5614 | dec eax // 488b4e50 | sub esp, 0x50 $sequence_5 = { 488d5557 498d4c2408 e8???????? 488bd8 488d45b7 483bd8 7422 } // n = 7, score = 100 // 488d5557 | jne 0x45c // 498d4c2408 | dec eax // e8???????? | // 488bd8 | arpl cx, bx // 488d45b7 | inc ecx // 483bd8 | cmp dword ptr [esp + ebx*4 + 0x39570], 0 // 7422 | jne 0x483 $sequence_6 = { 488bf2 488bf9 488d91c0000000 488d4c2428 e8???????? 90 488dafa0000000 } // n = 7, score = 100 // 488bf2 | cmp byte ptr [eax + 0x1d], 0 // 488bf9 | jne 0x6b // 488d91c0000000 | nop dword ptr [eax] // 488d4c2428 | dec eax // e8???????? | // 90 | mov eax, dword ptr [edi + 0x20] // 488dafa0000000 | dec eax $sequence_7 = { 4c894c2470 488b4508 4c3bc8 740f 418b4918 390e 7c07 } // n = 7, score = 100 // 4c894c2470 | jl 0x4a1 // 488b4508 | dec eax // 4c3bc8 | lea ebx, [esp + 0x70] // 740f | jmp 0x4b1 // 418b4918 | dec eax // 390e | mov dword ptr [esp + 0x88], eax // 7c07 | dec eax $sequence_8 = { 8d4801 488d93b8000000 8b02 3bc8 741b 8b83c0000000 488b8b88000000 } // n = 7, score = 100 // 8d4801 | dec eax // 488d93b8000000 | mov dword ptr [esp + 0x58], esi // 8b02 | dec ecx // 3bc8 | mov esi, eax // 741b | dec eax // 8b83c0000000 | mov edi, edx // 488b8b88000000 | dec eax $sequence_9 = { 4489642460 4c8d442458 488d542460 488bc8 e8???????? eb03 498bc5 } // n = 7, score = 100 // 4489642460 | sub esp, 0x20 // 4c8d442458 | dec eax // 488d542460 | lea eax, [0x34487] // 488bc8 | mov ebx, edx // e8???????? | // eb03 | dec eax // 498bc5 | mov edi, ecx condition: 7 of them and filesize < 742400 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below. Changes regarding references should be proposed on the Malpedia library page.
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY