Actor(s): Higaisa
There is no description at this point.
rule win_unidentified_076_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.unidentified_076." 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.unidentified_076" 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 = { 488b4618 48897858 488b4618 48894050 488b4e18 4863414c 4803c1 } // n = 7, score = 100 // 488b4618 | mov eax, eax // 48897858 | mov dword ptr [esp + 0x28], 1 // 488b4618 | mov dword ptr [esp + 0x20], 0x400 // 48894050 | xor esi, esi // 488b4e18 | dec eax // 4863414c | mov ecx, edi // 4803c1 | inc esp $sequence_1 = { 498bd7 89442428 895c2420 41ff9240030000 85c0 7926 } // n = 6, score = 100 // 498bd7 | mov ecx, ebx // 89442428 | jmp 0x8c7 // 895c2420 | inc ecx // 41ff9240030000 | cmp eax, 0x2c // 85c0 | jae 0x856 // 7926 | inc ecx $sequence_2 = { 483b3f 75d4 488dbb88000000 eb27 488b17 488b0a } // n = 6, score = 100 // 483b3f | mov edi, ecx // 75d4 | dec ecx // 488dbb88000000 | mov edi, eax // eb27 | dec eax // 488b17 | mov ebp, ecx // 488b0a | dec ebp $sequence_3 = { 8bef e9???????? 4180ff51 0f8541010000 } // n = 4, score = 100 // 8bef | call dword ptr [edx + 0x180] // e9???????? | // 4180ff51 | inc ebx // 0f8541010000 | dec eax $sequence_4 = { 443be3 0f8c3effffff 33c0 488b5c2450 488b6c2458 } // n = 5, score = 100 // 443be3 | add eax, 0x1370 // 0f8c3effffff | dec eax // 33c0 | mov edx, ebx // 488b5c2450 | mov dword ptr [esp + 0x30], edx // 488b6c2458 | dec eax $sequence_5 = { 488b87c8000000 8b9068050000 ebb6 4c8b06 488b8f68020000 41b900008000 ba0e660000 } // n = 7, score = 100 // 488b87c8000000 | dec eax // 8b9068050000 | lea edx, [0x7085] // ebb6 | dec eax // 4c8b06 | lea ecx, [ebp + 0xa90] // 488b8f68020000 | dec eax // 41b900008000 | lea edx, [0x7192] // ba0e660000 | dec eax $sequence_6 = { 0f85ab000000 4533ff 4c8bf7 8d7001 4885ff 0f84af000000 4183ff14 } // n = 7, score = 100 // 0f85ab000000 | call dword ptr [eax] // 4533ff | dec eax // 4c8bf7 | mov esi, eax // 8d7001 | inc esp // 4885ff | lea ecx, [edi + 0x18] // 0f84af000000 | inc ebp // 4183ff14 | xor eax, eax $sequence_7 = { 448b434c 443b4374 7837 b9581b0000 394b78 } // n = 5, score = 100 // 448b434c | mov dword ptr [ebx + 0xf4], esi // 443b4374 | mov dword ptr [ebx + 0x24], 2 // 7837 | dec eax // b9581b0000 | mov dword ptr [ebx + 0xe8], esi // 394b78 | mov dword ptr [ebx + 0x7c], 0x14 $sequence_8 = { 4885ff 7472 488b86c8000000 33d2 488bcf 448d4220 ff9020070000 } // n = 7, score = 100 // 4885ff | dec eax // 7472 | mov edx, dword ptr [esi + 0x1348] // 488b86c8000000 | dec esp // 33d2 | mov eax, dword ptr [esi + 0xc8] // 488bcf | dec eax // 448d4220 | add ecx, 0x214 // ff9020070000 | dec eax $sequence_9 = { 488bcb e8???????? 488bcb e8???????? 488bcb 85c0 751e } // n = 7, score = 100 // 488bcb | xor edx, edx // e8???????? | // 488bcb | dec eax // e8???????? | // 488bcb | lea ecx, [edi + 0x6c8] // 85c0 | mov edx, 0x1f7 // 751e | call dword ptr [eax + 0x7f0] condition: 7 of them and filesize < 114688 }
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