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 = "2022-04-08" 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 = "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 = { 03442440 488b4c2430 3b81acaf0100 7615 } // n = 4, score = 100 // 03442440 | dec eax // 488b4c2430 | mov dword ptr [esp + 0x24], eax // 3b81acaf0100 | add eax, dword ptr [esp + 0x40] // 7615 | dec eax $sequence_1 = { 488bf8 4883feff 0f84d1000000 4883f8ff } // n = 4, score = 100 // 488bf8 | or eax, 0xfffffbc0 // 4883feff | jmp 0xd // 0f84d1000000 | dec eax // 4883f8ff | mov dword ptr [esp + 0x20], eax $sequence_2 = { 4889442420 41b924000000 4533c0 33d2 } // n = 4, score = 100 // 4889442420 | mov eax, dword ptr [esp + 0xe0] // 41b924000000 | mov dword ptr [eax], 0 // 4533c0 | je 0xd // 33d2 | mov eax, dword ptr [esp + 0x44] $sequence_3 = { 8b442424 ffc8 89442424 e9???????? } // n = 4, score = 100 // 8b442424 | mov eax, dword ptr [esp + 0x70] // ffc8 | mov eax, dword ptr [eax + 0x6afb8] // 89442424 | mov eax, dword ptr [esp + 0x24] // e9???????? | $sequence_4 = { 740b 8b442444 0dc0fbffff eb02 } // n = 4, score = 100 // 740b | xor eax, esp // 8b442444 | dec eax // 0dc0fbffff | mov dword ptr [esp + 0xa8], eax // eb02 | dec eax $sequence_5 = { 488bc1 4889442420 c744242c00000000 eb0a } // n = 4, score = 100 // 488bc1 | inc ecx // 4889442420 | mov ecx, 0x24 // c744242c00000000 | inc ebp // eb0a | xor eax, eax $sequence_6 = { 4839442430 0f826cfeffff 488b442470 8b80b8af0600 } // n = 4, score = 100 // 4839442430 | dec eax // 0f826cfeffff | cmp dword ptr [esp + 0x30], eax // 488b442470 | jb 0xfffffe72 // 8b80b8af0600 | dec eax $sequence_7 = { 4833c4 48898424a8000000 488b8424e0000000 c70000000000 } // n = 4, score = 100 // 4833c4 | mov ecx, dword ptr [esp + 0x30] // 48898424a8000000 | cmp eax, dword ptr [ecx + 0x1afac] // 488b8424e0000000 | jbe 0x17 // c70000000000 | dec eax condition: 7 of them and filesize < 765952 }
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