There is no description at this point.
rule win_r980_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.r980." 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.r980" 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 = { c3 8b4de0 e9???????? 8d4da0 e9???????? e8???????? c3 } // n = 7, score = 200 // c3 | ret // 8b4de0 | mov ecx, dword ptr [ebp - 0x20] // e9???????? | // 8d4da0 | lea ecx, [ebp - 0x60] // e9???????? | // e8???????? | // c3 | ret $sequence_1 = { 84c0 7438 8b7510 85f6 7431 8b5f24 8d4f18 } // n = 7, score = 200 // 84c0 | test al, al // 7438 | je 0x3a // 8b7510 | mov esi, dword ptr [ebp + 0x10] // 85f6 | test esi, esi // 7431 | je 0x33 // 8b5f24 | mov ebx, dword ptr [edi + 0x24] // 8d4f18 | lea ecx, [edi + 0x18] $sequence_2 = { 837de800 7530 8b5614 83fa10 7204 8b06 eb02 } // n = 7, score = 200 // 837de800 | cmp dword ptr [ebp - 0x18], 0 // 7530 | jne 0x32 // 8b5614 | mov edx, dword ptr [esi + 0x14] // 83fa10 | cmp edx, 0x10 // 7204 | jb 6 // 8b06 | mov eax, dword ptr [esi] // eb02 | jmp 4 $sequence_3 = { 8bce 6a00 50 e8???????? 8b4508 8930 8b4df4 } // n = 7, score = 200 // 8bce | mov ecx, esi // 6a00 | push 0 // 50 | push eax // e8???????? | // 8b4508 | mov eax, dword ptr [ebp + 8] // 8930 | mov dword ptr [eax], esi // 8b4df4 | mov ecx, dword ptr [ebp - 0xc] $sequence_4 = { 50 8bce e8???????? c745fc01000000 8b7de8 85ff } // n = 6, score = 200 // 50 | push eax // 8bce | mov ecx, esi // e8???????? | // c745fc01000000 | mov dword ptr [ebp - 4], 1 // 8b7de8 | mov edi, dword ptr [ebp - 0x18] // 85ff | test edi, edi $sequence_5 = { 897944 eb05 bb01000000 56 c745fc00000000 e8???????? 83c404 } // n = 7, score = 200 // 897944 | mov dword ptr [ecx + 0x44], edi // eb05 | jmp 7 // bb01000000 | mov ebx, 1 // 56 | push esi // c745fc00000000 | mov dword ptr [ebp - 4], 0 // e8???????? | // 83c404 | add esp, 4 $sequence_6 = { c1e812 0cf0 0fb6c0 50 e8???????? 8bc3 8bcf } // n = 7, score = 200 // c1e812 | shr eax, 0x12 // 0cf0 | or al, 0xf0 // 0fb6c0 | movzx eax, al // 50 | push eax // e8???????? | // 8bc3 | mov eax, ebx // 8bcf | mov ecx, edi $sequence_7 = { f6c302 742c 8b45e8 83e3fd 83f808 720d 40 } // n = 7, score = 200 // f6c302 | test bl, 2 // 742c | je 0x2e // 8b45e8 | mov eax, dword ptr [ebp - 0x18] // 83e3fd | and ebx, 0xfffffffd // 83f808 | cmp eax, 8 // 720d | jb 0xf // 40 | inc eax $sequence_8 = { 57 8d4e18 e8???????? 8b4618 8d4d0c 034624 6a01 } // n = 7, score = 200 // 57 | push edi // 8d4e18 | lea ecx, [esi + 0x18] // e8???????? | // 8b4618 | mov eax, dword ptr [esi + 0x18] // 8d4d0c | lea ecx, [ebp + 0xc] // 034624 | add eax, dword ptr [esi + 0x24] // 6a01 | push 1 $sequence_9 = { 8945ec 8b75c4 8d8544ffffff 50 8d45c8 c645fc07 50 } // n = 7, score = 200 // 8945ec | mov dword ptr [ebp - 0x14], eax // 8b75c4 | mov esi, dword ptr [ebp - 0x3c] // 8d8544ffffff | lea eax, [ebp - 0xbc] // 50 | push eax // 8d45c8 | lea eax, [ebp - 0x38] // c645fc07 | mov byte ptr [ebp - 4], 7 // 50 | push eax condition: 7 of them and filesize < 3178496 }
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