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 = "2023-03-29" 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 = "20230328" malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d" malpedia_version = "20230407" 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 = { 03c8 8bc1 8944245c 8b442460 } // n = 4, score = 100 // 03c8 | test eax, eax // 8bc1 | jge 0xe // 8944245c | inc ebp // 8b442460 | lea eax, [esp + 1] $sequence_1 = { 41b840000000 488bd0 488d8c2470010000 e8???????? } // n = 4, score = 100 // 41b840000000 | jae 0xf // 488bd0 | mov dword ptr [esp + 0x134], 1 // 488d8c2470010000 | inc ecx // e8???????? | $sequence_2 = { 7507 b800000100 eb6b 8b8424b0020000 } // n = 4, score = 100 // 7507 | lea ecx, [esp + 0x170] // b800000100 | add eax, dword ptr [esp + 0x34] // eb6b | mov ecx, dword ptr [esp + 0xc] // 8b8424b0020000 | lea eax, [ecx + eax + 0x4787c62a] $sequence_3 = { 448b7b48 89442450 4885c9 0f85be000000 } // n = 4, score = 100 // 448b7b48 | inc esp // 89442450 | mov edi, dword ptr [ebx + 0x48] // 4885c9 | mov dword ptr [esp + 0x50], eax // 0f85be000000 | dec eax $sequence_4 = { 8b00 3944241c 730d c784243401000001000000 } // n = 4, score = 100 // 8b00 | test ecx, ecx // 3944241c | jne 0xc4 // 730d | mov eax, dword ptr [eax] // c784243401000001000000 | cmp dword ptr [esp + 0x1c], eax $sequence_5 = { 458d442401 33d2 33c9 4c89642448 } // n = 4, score = 100 // 458d442401 | jmp 0x72 // 33d2 | mov eax, dword ptr [esp + 0x2b0] // 33c9 | dec eax // 4c89642448 | mov ecx, dword ptr [esp + 0x50] $sequence_6 = { 488b4c2450 e8???????? 85c0 7d0a } // n = 4, score = 100 // 488b4c2450 | mov dword ptr [esp + 0xc], eax // e8???????? | // 85c0 | jne 9 // 7d0a | mov eax, 0x10000 $sequence_7 = { 03442434 8b4c240c 8d84012ac68747 8944240c } // n = 4, score = 100 // 03442434 | mov eax, 0x40 // 8b4c240c | dec eax // 8d84012ac68747 | mov edx, eax // 8944240c | dec eax condition: 7 of them and filesize < 765952 }
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