Actor(s): Turla
There is no description at this point.
rule win_lightneuron_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.lightneuron." 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.lightneuron" 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 = { e8???????? 488b05???????? 488b15???????? 4885c0 4c8bc6 488bcf 480f45d0 } // n = 7, score = 100 // e8???????? | // 488b05???????? | // 488b15???????? | // 4885c0 | dec eax // 4c8bc6 | mov ecx, dword ptr [edi + 8] // 488bcf | mov edx, 0x93 // 480f45d0 | jmp 0x1155 $sequence_1 = { b920000000 e8???????? 4889442420 48837c242000 7502 eb70 488b4c2420 } // n = 7, score = 100 // b920000000 | mov dword ptr [esp + 0x60], esi // e8???????? | // 4889442420 | mov ecx, dword ptr [ebx] // 48837c242000 | cmp ecx, 0xc42c // 7502 | je 0x16db // eb70 | cmp ecx, 0xc42d // 488b4c2420 | je 0x16db $sequence_2 = { eb3e 488b4808 e8???????? 488b7c2460 488bcf ff15???????? 8bf0 } // n = 7, score = 100 // eb3e | dec esp // 488b4808 | mov eax, dword ptr [esp + 0x30] // e8???????? | // 488b7c2460 | jmp 0x1dc8 // 488bcf | dec eax // ff15???????? | // 8bf0 | test ebp, ebp $sequence_3 = { b8b0040000 4883c420 5b c3 488b05???????? 488b15???????? 41b802000000 } // n = 7, score = 100 // b8b0040000 | inc esp // 4883c420 | mov eax, eax // 5b | mov dword ptr [esp + 0x20], edi // c3 | dec eax // 488b05???????? | // 488b15???????? | // 41b802000000 | test eax, eax $sequence_4 = { 44891b eb08 488bb42450010000 488b9c2448010000 4885db 0f8498000000 488b9424e0000000 } // n = 7, score = 100 // 44891b | inc ecx // eb08 | cmp edi, 1 // 488bb42450010000 | jne 0x176d // 488b9c2448010000 | dec eax // 4885db | mov ecx, eax // 0f8498000000 | dec eax // 488b9424e0000000 | test eax, eax $sequence_5 = { 488b4808 ff15???????? 8d4801 e8???????? 4c8be8 4885c0 740d } // n = 7, score = 100 // 488b4808 | mov dword ptr [esp + 0x70], edi // ff15???????? | // 8d4801 | inc esp // e8???????? | // 4c8be8 | mov dword ptr [esp + 0x68], esi // 4885c0 | dec eax // 740d | mov edi, eax $sequence_6 = { 410fb6c3 4533b48cc0ed0300 4533b48480d50300 418bc0 45337500 c1e808 } // n = 6, score = 100 // 410fb6c3 | xor edx, edx // 4533b48cc0ed0300 | dec eax // 4533b48480d50300 | mov edi, dword ptr [esp + 0xb0] // 418bc0 | dec eax // 45337500 | test edi, edi // c1e808 | je 0x60f $sequence_7 = { 4885c0 488bcf 480f45d8 4c89742438 ff15???????? 4863d0 488d442438 } // n = 7, score = 100 // 4885c0 | mov eax, dword ptr [edx + 0x20] // 488bcf | dec eax // 480f45d8 | mov dword ptr [esp + 0x20], ecx // 4c89742438 | dec eax // ff15???????? | // 4863d0 | mov eax, dword ptr [edx + 0x10] // 488d442438 | dec eax $sequence_8 = { ff15???????? 8b1d???????? 488d0d8eb40300 8935???????? ff15???????? e8???????? 488d0d76b40300 } // n = 7, score = 100 // ff15???????? | // 8b1d???????? | // 488d0d8eb40300 | dec ecx // 8935???????? | // ff15???????? | // e8???????? | // 488d0d76b40300 | mov ecx, dword ptr [esp + 0xa0] $sequence_9 = { 0fb6442460 8801 488b442470 4883c001 4889442470 eb19 488b842480000000 } // n = 7, score = 100 // 0fb6442460 | dec eax // 8801 | mov ecx, dword ptr [esp + 0x68] // 488b442470 | dec esp // 4883c001 | arpl word ptr [esp + 0x24], bx // 4889442470 | dec eax // eb19 | mov eax, dword ptr [esp + 0x68] // 488b842480000000 | inc esp condition: 7 of them and filesize < 573440 }
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