Actor(s): Lazarus Group
There is no description at this point.
rule win_slickshoes_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2024-10-31" version = "1" description = "Detects win.slickshoes." 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.slickshoes" malpedia_rule_date = "20241030" malpedia_hash = "26e26953c49c8efafbf72a38076855d578e0a2e4" malpedia_version = "20241030" 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 = { b976b1d971 60 f9 66b884f9 61 668bf8 6681ef5cec } // n = 7, score = 100 // b976b1d971 | mov ecx, 0x71d9b176 // 60 | pushal // f9 | stc // 66b884f9 | mov ax, 0xf984 // 61 | popal // 668bf8 | mov di, ax // 6681ef5cec | sub di, 0xec5c $sequence_1 = { ff3424 5d 57 89e7 81c704000000 83c704 57 } // n = 7, score = 100 // ff3424 | push dword ptr [esp] // 5d | pop ebp // 57 | push edi // 89e7 | mov edi, esp // 81c704000000 | add edi, 4 // 83c704 | add edi, 4 // 57 | push edi $sequence_2 = { ff3424 8b1c24 83c404 56 890424 54 58 } // n = 7, score = 100 // ff3424 | push dword ptr [esp] // 8b1c24 | mov ebx, dword ptr [esp] // 83c404 | add esp, 4 // 56 | push esi // 890424 | mov dword ptr [esp], eax // 54 | push esp // 58 | pop eax $sequence_3 = { e9???????? 21d8 e9???????? 813424e58bf74a e9???????? 5d 81c35678f537 } // n = 7, score = 100 // e9???????? | // 21d8 | and eax, ebx // e9???????? | // 813424e58bf74a | xor dword ptr [esp], 0x4af78be5 // e9???????? | // 5d | pop ebp // 81c35678f537 | add ebx, 0x37f57856 $sequence_4 = { e9???????? 81c404000000 e9???????? 890c24 50 c70424fddfed59 892c24 } // n = 7, score = 100 // e9???????? | // 81c404000000 | add esp, 4 // e9???????? | // 890c24 | mov dword ptr [esp], ecx // 50 | push eax // c70424fddfed59 | mov dword ptr [esp], 0x59eddffd // 892c24 | mov dword ptr [esp], ebp $sequence_5 = { be00040000 bf0a000000 8913 be00040000 09fe 89fe 81ce00040000 } // n = 7, score = 100 // be00040000 | mov esi, 0x400 // bf0a000000 | mov edi, 0xa // 8913 | mov dword ptr [ebx], edx // be00040000 | mov esi, 0x400 // 09fe | or esi, edi // 89fe | mov esi, edi // 81ce00040000 | or esi, 0x400 $sequence_6 = { e9???????? ba2682ff7f 53 bb15b4fb3a 81c3b5b7ff7d e9???????? 56 } // n = 7, score = 100 // e9???????? | // ba2682ff7f | mov edx, 0x7fff8226 // 53 | push ebx // bb15b4fb3a | mov ebx, 0x3afbb415 // 81c3b5b7ff7d | add ebx, 0x7dffb7b5 // e9???????? | // 56 | push esi $sequence_7 = { e9???????? c1e708 e9???????? 89df e9???????? 59 50 } // n = 7, score = 100 // e9???????? | // c1e708 | shl edi, 8 // e9???????? | // 89df | mov edi, ebx // e9???????? | // 59 | pop ecx // 50 | push eax $sequence_8 = { 9d 7c77 52 c199????????f3 30e3 61 d6 } // n = 7, score = 100 // 9d | popfd // 7c77 | jl 0x79 // 52 | push edx // c199????????f3 | // 30e3 | xor bl, ah // 61 | popal // d6 | salc $sequence_9 = { e9???????? 313c24 333c24 e9???????? 870c24 8b2424 e9???????? } // n = 7, score = 100 // e9???????? | // 313c24 | xor dword ptr [esp], edi // 333c24 | xor edi, dword ptr [esp] // e9???????? | // 870c24 | xchg dword ptr [esp], ecx // 8b2424 | mov esp, dword ptr [esp] // e9???????? | condition: 7 of them and filesize < 11198464 }
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