Actor(s): Lazarus Group
There is no description at this point.
rule win_lcpdot_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.lcpdot." 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.lcpdot" 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 = { 418943c4 498943c8 488b19 488b7108 } // n = 4, score = 100 // 418943c4 | xor edx, edx // 498943c8 | inc ecx // 488b19 | mov eax, 0x7fe // 488b7108 | xor edi, edi $sequence_1 = { 4863d1 488d0d36150100 488bc2 83e21f 48c1f805 486bd258 488b04c1 } // n = 7, score = 100 // 4863d1 | mov edx, dword ptr [edi + 8] // 488d0d36150100 | dec eax // 488bc2 | mov ecx, edi // 83e21f | dec eax // 48c1f805 | mov edx, 0x4bc6a7ee // 486bd258 | aaa // 488b04c1 | mov dword ptr [ecx], eax $sequence_2 = { 4885c0 7461 4c8938 bae8030000 b940000000 48897008 ff15???????? } // n = 7, score = 100 // 4885c0 | lea edx, [0xa7dc] // 7461 | dec eax // 4c8938 | mov ecx, esi // bae8030000 | dec eax // b940000000 | mov eax, esi // 48897008 | dec eax // ff15???????? | $sequence_3 = { 488bd7 41b8e8030000 e8???????? 488b7540 4c8d442420 488b5608 } // n = 6, score = 100 // 488bd7 | jne 0x27a // 41b8e8030000 | inc ebx // e8???????? | // 488b7540 | cmp ebx, 3 // 4c8d442420 | jb 0x216 // 488b5608 | dec eax $sequence_4 = { 488b5720 48895018 448b4728 488d572c } // n = 4, score = 100 // 488b5720 | dec eax // 48895018 | lea edi, [esp + 0x40] // 448b4728 | dec eax // 488d572c | or ecx, 0xffffffff $sequence_5 = { 488d0d4fde0000 e8???????? 85c0 755a } // n = 4, score = 100 // 488d0d4fde0000 | dec eax // e8???????? | // 85c0 | mov dword ptr [esp + 0x7a], eax // 755a | mov dword ptr [ebp - 0x7e], eax $sequence_6 = { 41837b1014 731c bb78000000 0f1f8000000000 b960ea0000 ff15???????? } // n = 6, score = 100 // 41837b1014 | lea eax, [0x12edf] // 731c | jmp 0xab9 // bb78000000 | dec eax // 0f1f8000000000 | add eax, 0x10 // b960ea0000 | dec eax // ff15???????? | $sequence_7 = { 4881c4c0100000 415c 5f 5e } // n = 4, score = 100 // 4881c4c0100000 | inc esp // 415c | lea eax, [edx + 0x10] // 5f | je 0x101 // 5e | mov ecx, 0x1f4 $sequence_8 = { 498bce 4903d5 e8???????? 85c0 } // n = 4, score = 100 // 498bce | mov eax, dword ptr [ebx + 0x40] // 4903d5 | dec eax // e8???????? | // 85c0 | mov dword ptr [eax + 8], eax $sequence_9 = { 4883c9ff 33c0 488d7b3c 66f2af 48f7d1 39832c040000 7517 } // n = 7, score = 100 // 4883c9ff | dec eax // 33c0 | mov ecx, dword ptr [esp + 0x30] // 488d7b3c | dec eax // 66f2af | test ecx, ecx // 48f7d1 | dec eax // 39832c040000 | mov ebx, dword ptr [esp + 0x470] // 7517 | dec eax condition: 7 of them and filesize < 257024 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below.
Please propose all changes regarding references on the Malpedia library page
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY