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 = "2023-01-25" 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 = "20230124" malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686" malpedia_version = "20230125" 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 = { 488b8c2480000000 488b8948030000 833c8100 0f8482000000 } // n = 4, score = 100 // 488b8c2480000000 | dec eax // 488b8948030000 | mov ecx, dword ptr [esp + 0x80] // 833c8100 | dec eax // 0f8482000000 | mov ecx, dword ptr [ecx + 0x348] $sequence_1 = { 7433 4863842414040000 8b848420040000 8b8c2444040000 } // n = 4, score = 100 // 7433 | call dword ptr [esp + 0x58] // 4863842414040000 | mov byte ptr [esp + 0x28], 0x4b // 8b848420040000 | inc ecx // 8b8c2444040000 | mov eax, 1 $sequence_2 = { 7529 48630424 488b4c2420 0fb6840134190000 } // n = 4, score = 100 // 7529 | movzx ecx, al // 48630424 | mov eax, dword ptr [esp + 0x48] // 488b4c2420 | dec eax // 0fb6840134190000 | mov ecx, dword ptr [esp + 0x60] $sequence_3 = { 0fb6493f c1e118 0bc1 8944245c } // n = 4, score = 100 // 0fb6493f | xor ecx, esp // c1e118 | dec eax // 0bc1 | mov ebx, dword ptr [esp + 0x2060] // 8944245c | dec eax $sequence_4 = { 488b4c2438 894114 488b442438 4883c020 } // n = 4, score = 100 // 488b4c2438 | jne 0x2b // 894114 | dec eax // 488b442438 | arpl word ptr [esp], ax // 4883c020 | dec eax $sequence_5 = { 03c8 8bc1 99 b9ff000000 } // n = 4, score = 100 // 03c8 | arpl word ptr [esp + 0x414], ax // 8bc1 | mov eax, dword ptr [esp + eax*4 + 0x420] // 99 | mov ecx, dword ptr [esp + 0x444] // b9ff000000 | dec eax $sequence_6 = { 488b4008 0fb64008 83f802 7c1a } // n = 4, score = 100 // 488b4008 | mov ecx, dword ptr [esp + 0x20] // 0fb64008 | movzx eax, byte ptr [ecx + eax + 0x1934] // 83f802 | je 0x35 // 7c1a | dec eax $sequence_7 = { 4833cc e8???????? 488b9c2460200000 4881c440200000 } // n = 4, score = 100 // 4833cc | cmp dword ptr [ecx + eax*4], 0 // e8???????? | // 488b9c2460200000 | je 0x88 // 4881c440200000 | dec eax condition: 7 of them and filesize < 765952 }
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