There is no description at this point.
rule elf_hideandseek_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects elf.hideandseek." 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/elf.hideandseek" 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 = { 8b442424 39742420 7504 89c6 eb21 39442420 } // n = 6, score = 100 // 8b442424 | mov eax, dword ptr [esp + 0x24] // 39742420 | cmp dword ptr [esp + 0x20], esi // 7504 | jne 6 // 89c6 | mov esi, eax // eb21 | jmp 0x23 // 39442420 | cmp dword ptr [esp + 0x20], eax $sequence_1 = { 40 663b47f0 668947ee 7238 52 52 } // n = 6, score = 100 // 40 | inc eax // 663b47f0 | cmp ax, word ptr [edi - 0x10] // 668947ee | mov word ptr [edi - 0x12], ax // 7238 | jb 0x3a // 52 | push edx // 52 | push edx $sequence_2 = { 50 e8???????? 58 5a 6a40 8d8424b0210000 50 } // n = 7, score = 100 // 50 | push eax // e8???????? | // 58 | pop eax // 5a | pop edx // 6a40 | push 0x40 // 8d8424b0210000 | lea eax, [esp + 0x21b0] // 50 | push eax $sequence_3 = { be04000000 83c410 84c0 7519 e9???????? } // n = 5, score = 100 // be04000000 | mov esi, 4 // 83c410 | add esp, 0x10 // 84c0 | test al, al // 7519 | jne 0x1b // e9???????? | $sequence_4 = { 89c3 85c0 0f8525010000 8b442430 8d742428 f60001 0f8454ffffff } // n = 7, score = 100 // 89c3 | mov ebx, eax // 85c0 | test eax, eax // 0f8525010000 | jne 0x12b // 8b442430 | mov eax, dword ptr [esp + 0x30] // 8d742428 | lea esi, [esp + 0x28] // f60001 | test byte ptr [eax], 1 // 0f8454ffffff | je 0xffffff5a $sequence_5 = { 8b45f4 8a4df0 d3e8 89d7 8a4de4 09c7 8b75f4 } // n = 7, score = 100 // 8b45f4 | mov eax, dword ptr [ebp - 0xc] // 8a4df0 | mov cl, byte ptr [ebp - 0x10] // d3e8 | shr eax, cl // 89d7 | mov edi, edx // 8a4de4 | mov cl, byte ptr [ebp - 0x1c] // 09c7 | or edi, eax // 8b75f4 | mov esi, dword ptr [ebp - 0xc] $sequence_6 = { 56 57 e8???????? 83c410 85c0 7510 50 } // n = 7, score = 100 // 56 | push esi // 57 | push edi // e8???????? | // 83c410 | add esp, 0x10 // 85c0 | test eax, eax // 7510 | jne 0x12 // 50 | push eax $sequence_7 = { 53 83ec1c 8b5c2430 8b7c2438 8b6c243c 8b742440 85db } // n = 7, score = 100 // 53 | push ebx // 83ec1c | sub esp, 0x1c // 8b5c2430 | mov ebx, dword ptr [esp + 0x30] // 8b7c2438 | mov edi, dword ptr [esp + 0x38] // 8b6c243c | mov ebp, dword ptr [esp + 0x3c] // 8b742440 | mov esi, dword ptr [esp + 0x40] // 85db | test ebx, ebx $sequence_8 = { 8b1f 89d8 0faf06 85c0 792c 56 57 } // n = 7, score = 100 // 8b1f | mov ebx, dword ptr [edi] // 89d8 | mov eax, ebx // 0faf06 | imul eax, dword ptr [esi] // 85c0 | test eax, eax // 792c | jns 0x2e // 56 | push esi // 57 | push edi $sequence_9 = { e8???????? eb09 50 57 56 56 e8???????? } // n = 7, score = 100 // e8???????? | // eb09 | jmp 0xb // 50 | push eax // 57 | push edi // 56 | push esi // 56 | push esi // e8???????? | condition: 7 of them and filesize < 196608 }
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