There is no description at this point.
rule win_pebbledash_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.pebbledash." 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.pebbledash" malpedia_rule_date = "20230705" malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41" malpedia_version = "20230715" 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 = { 8b11 52 e8???????? 83c404 8b8594baffff c74004ffffffff 8b8d94baffff } // n = 7, score = 100 // 8b11 | mov edx, dword ptr [ecx] // 52 | push edx // e8???????? | // 83c404 | add esp, 4 // 8b8594baffff | mov eax, dword ptr [ebp - 0x456c] // c74004ffffffff | mov dword ptr [eax + 4], 0xffffffff // 8b8d94baffff | mov ecx, dword ptr [ebp - 0x456c] $sequence_1 = { eb7d 8b8db0f9ffff 83e110 85c9 742c 8b95a8f9ffff 52 } // n = 7, score = 100 // eb7d | jmp 0x7f // 8b8db0f9ffff | mov ecx, dword ptr [ebp - 0x650] // 83e110 | and ecx, 0x10 // 85c9 | test ecx, ecx // 742c | je 0x2e // 8b95a8f9ffff | mov edx, dword ptr [ebp - 0x658] // 52 | push edx $sequence_2 = { 8d8598f3ffff 50 b9???????? e8???????? e9???????? 8b8d84efffff 8d540902 } // n = 7, score = 100 // 8d8598f3ffff | lea eax, [ebp - 0xc68] // 50 | push eax // b9???????? | // e8???????? | // e9???????? | // 8b8d84efffff | mov ecx, dword ptr [ebp - 0x107c] // 8d540902 | lea edx, [ecx + ecx + 2] $sequence_3 = { 55 8bec 83ec0c 894df4 8b45f4 837804ff 7468 } // n = 7, score = 100 // 55 | push ebp // 8bec | mov ebp, esp // 83ec0c | sub esp, 0xc // 894df4 | mov dword ptr [ebp - 0xc], ecx // 8b45f4 | mov eax, dword ptr [ebp - 0xc] // 837804ff | cmp dword ptr [eax + 4], -1 // 7468 | je 0x6a $sequence_4 = { 8b4d08 8b9144af0100 8d440204 8b4d08 898144af0100 8b5508 c78248af010000000000 } // n = 7, score = 100 // 8b4d08 | mov ecx, dword ptr [ebp + 8] // 8b9144af0100 | mov edx, dword ptr [ecx + 0x1af44] // 8d440204 | lea eax, [edx + eax + 4] // 8b4d08 | mov ecx, dword ptr [ebp + 8] // 898144af0100 | mov dword ptr [ecx + 0x1af44], eax // 8b5508 | mov edx, dword ptr [ebp + 8] // c78248af010000000000 | mov dword ptr [edx + 0x1af48], 0 $sequence_5 = { 3b4804 0f84a5000000 8b9594baffff 837a04ff 7411 8b8594baffff 8b08 } // n = 7, score = 100 // 3b4804 | cmp ecx, dword ptr [eax + 4] // 0f84a5000000 | je 0xab // 8b9594baffff | mov edx, dword ptr [ebp - 0x456c] // 837a04ff | cmp dword ptr [edx + 4], -1 // 7411 | je 0x13 // 8b8594baffff | mov eax, dword ptr [ebp - 0x456c] // 8b08 | mov ecx, dword ptr [eax] $sequence_6 = { 85c0 7511 8b8598fdffff 50 ff15???????? 33c0 } // n = 6, score = 100 // 85c0 | test eax, eax // 7511 | jne 0x13 // 8b8598fdffff | mov eax, dword ptr [ebp - 0x268] // 50 | push eax // ff15???????? | // 33c0 | xor eax, eax $sequence_7 = { e8???????? 8945fc 8b4d0c 2b4d08 83c101 894df8 8b45fc } // n = 7, score = 100 // e8???????? | // 8945fc | mov dword ptr [ebp - 4], eax // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] // 2b4d08 | sub ecx, dword ptr [ebp + 8] // 83c101 | add ecx, 1 // 894df8 | mov dword ptr [ebp - 8], ecx // 8b45fc | mov eax, dword ptr [ebp - 4] $sequence_8 = { 8b858cefffff 50 8b8d88efffff 51 b9???????? e8???????? 85c0 } // n = 7, score = 100 // 8b858cefffff | mov eax, dword ptr [ebp - 0x1074] // 50 | push eax // 8b8d88efffff | mov ecx, dword ptr [ebp - 0x1078] // 51 | push ecx // b9???????? | // e8???????? | // 85c0 | test eax, eax $sequence_9 = { 81c200000300 52 e8???????? 83c40c 8b45fc } // n = 5, score = 100 // 81c200000300 | add edx, 0x30000 // 52 | push edx // e8???????? | // 83c40c | add esp, 0xc // 8b45fc | mov eax, dword ptr [ebp - 4] condition: 7 of them and filesize < 360448 }
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