Actor(s): Lazarus Group
There is no description at this point.
rule win_hoplight_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.hoplight." 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.hoplight" 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 = { 488b4c2460 e8???????? 8b442428 488d0d5e680200 } // n = 4, score = 100 // 488b4c2460 | mov dword ptr [esp + 0xf8], eax // e8???????? | // 8b442428 | mov dword ptr [esp + 0x28], 0 // 488d0d5e680200 | dec eax $sequence_1 = { 488b5260 8b0481 894208 488b842480000000 } // n = 4, score = 100 // 488b5260 | mov eax, dword ptr [esp + 0x110] // 8b0481 | dec eax // 894208 | mov ecx, dword ptr [esp + 0x60] // 488b842480000000 | mov eax, dword ptr [esp + 0x28] $sequence_2 = { 8b442424 25ff000000 8bc0 488d0d87740200 } // n = 4, score = 100 // 8b442424 | mov eax, dword ptr [esp + 0x24] // 25ff000000 | and eax, 0xff // 8bc0 | mov eax, eax // 488d0d87740200 | dec eax $sequence_3 = { 4889542420 4d8bc8 488b442440 4c8bc0 } // n = 4, score = 100 // 4889542420 | mov edx, dword ptr [edx + 0x60] // 4d8bc8 | mov eax, dword ptr [ecx + eax*4] // 488b442440 | mov dword ptr [edx + 8], eax // 4c8bc0 | dec eax $sequence_4 = { 4c8bb42498040000 488b8d80030000 4833cc e8???????? } // n = 4, score = 100 // 4c8bb42498040000 | dec eax // 488b8d80030000 | lea ecx, [0x2685e] // 4833cc | dec eax // e8???????? | $sequence_5 = { 488d4c2460 e8???????? 488b842470020000 488b4060 } // n = 4, score = 100 // 488d4c2460 | mov eax, dword ptr [esp + 0x80] // e8???????? | // 488b842470020000 | dec esp // 488b4060 | mov esi, dword ptr [esp + 0x498] $sequence_6 = { 4833c4 48898424f8000000 c744242800000000 488b842410010000 } // n = 4, score = 100 // 4833c4 | lea ecx, [0x27487] // 48898424f8000000 | dec eax // c744242800000000 | xor eax, esp // 488b842410010000 | dec eax $sequence_7 = { 4c8d05883c0300 488bd0 488b4c2450 e8???????? } // n = 4, score = 100 // 4c8d05883c0300 | dec eax // 488bd0 | mov ecx, dword ptr [ebp + 0x380] // 488b4c2450 | dec eax // e8???????? | condition: 7 of them and filesize < 765952 }
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