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rule win_goggles_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-04-08" version = "1" description = "Detects win.goggles." 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.goggles" malpedia_rule_date = "20220405" malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a" malpedia_version = "20220411" 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 = { 53 ffd7 85c0 75c7 8b6c2418 56 } // n = 6, score = 100 // 53 | push ebx // ffd7 | call edi // 85c0 | test eax, eax // 75c7 | jne 0xffffffc9 // 8b6c2418 | mov ebp, dword ptr [esp + 0x18] // 56 | push esi $sequence_1 = { f3a5 8bcd 8d94247c010000 83e103 f3a4 8bbc24c0080000 83c9ff } // n = 7, score = 100 // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // 8bcd | mov ecx, ebp // 8d94247c010000 | lea edx, dword ptr [esp + 0x17c] // 83e103 | and ecx, 3 // f3a4 | rep movsb byte ptr es:[edi], byte ptr [esi] // 8bbc24c0080000 | mov edi, dword ptr [esp + 0x8c0] // 83c9ff | or ecx, 0xffffffff $sequence_2 = { 4a 8a8110400010 88441eff 758b 8b442410 83f802 } // n = 6, score = 100 // 4a | dec edx // 8a8110400010 | mov al, byte ptr [ecx + 0x10004010] // 88441eff | mov byte ptr [esi + ebx - 1], al // 758b | jne 0xffffff8d // 8b442410 | mov eax, dword ptr [esp + 0x10] // 83f802 | cmp eax, 2 $sequence_3 = { 6a3a 50 ffd6 8b9c24c4080000 } // n = 4, score = 100 // 6a3a | push 0x3a // 50 | push eax // ffd6 | call esi // 8b9c24c4080000 | mov ebx, dword ptr [esp + 0x8c4] $sequence_4 = { 5b 8b542414 8bc7 c6041700 5f } // n = 5, score = 100 // 5b | pop ebx // 8b542414 | mov edx, dword ptr [esp + 0x14] // 8bc7 | mov eax, edi // c6041700 | mov byte ptr [edi + edx], 0 // 5f | pop edi $sequence_5 = { 52 51 ff15???????? 8a142b } // n = 4, score = 100 // 52 | push edx // 51 | push ecx // ff15???????? | // 8a142b | mov dl, byte ptr [ebx + ebp] $sequence_6 = { 6891010000 50 6a02 56 ffd5 } // n = 5, score = 100 // 6891010000 | push 0x191 // 50 | push eax // 6a02 | push 2 // 56 | push esi // ffd5 | call ebp $sequence_7 = { 56 57 03ea ffd3 57 6a04 8d44245c } // n = 7, score = 100 // 56 | push esi // 57 | push edi // 03ea | add ebp, edx // ffd3 | call ebx // 57 | push edi // 6a04 | push 4 // 8d44245c | lea eax, dword ptr [esp + 0x5c] $sequence_8 = { 8be8 8b442418 83c404 83f804 0f8cbd000000 8bc8 c1e902 } // n = 7, score = 100 // 8be8 | mov ebp, eax // 8b442418 | mov eax, dword ptr [esp + 0x18] // 83c404 | add esp, 4 // 83f804 | cmp eax, 4 // 0f8cbd000000 | jl 0xc3 // 8bc8 | mov ecx, eax // c1e902 | shr ecx, 2 $sequence_9 = { 33ff 85c9 894c2408 7e70 8b4c2414 8bc2 53 } // n = 7, score = 100 // 33ff | xor edi, edi // 85c9 | test ecx, ecx // 894c2408 | mov dword ptr [esp + 8], ecx // 7e70 | jle 0x72 // 8b4c2414 | mov ecx, dword ptr [esp + 0x14] // 8bc2 | mov eax, edx // 53 | push ebx condition: 7 of them and filesize < 57344 }
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