Actor(s): Naikon
There is no description at this point.
rule win_sys10_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.sys10." 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.sys10" 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 = { 57 52 53 ffd5 85c0 } // n = 5, score = 200 // 57 | push edi // 52 | push edx // 53 | push ebx // ffd5 | call ebp // 85c0 | test eax, eax $sequence_1 = { 51 6800400000 52 50 e8???????? 8bf8 } // n = 6, score = 200 // 51 | push ecx // 6800400000 | push 0x4000 // 52 | push edx // 50 | push eax // e8???????? | // 8bf8 | mov edi, eax $sequence_2 = { ffd7 8b5304 52 ffd7 8b4308 50 ffd7 } // n = 7, score = 200 // ffd7 | call edi // 8b5304 | mov edx, dword ptr [ebx + 4] // 52 | push edx // ffd7 | call edi // 8b4308 | mov eax, dword ptr [ebx + 8] // 50 | push eax // ffd7 | call edi $sequence_3 = { 7407 53 ff15???????? 8b06 50 } // n = 5, score = 200 // 7407 | je 9 // 53 | push ebx // ff15???????? | // 8b06 | mov eax, dword ptr [esi] // 50 | push eax $sequence_4 = { 85c0 7406 33c0 83c40c c3 8b442408 8d4c2404 } // n = 7, score = 200 // 85c0 | test eax, eax // 7406 | je 8 // 33c0 | xor eax, eax // 83c40c | add esp, 0xc // c3 | ret // 8b442408 | mov eax, dword ptr [esp + 8] // 8d4c2404 | lea ecx, [esp + 4] $sequence_5 = { 6a00 8bf8 ffd3 894610 89442418 8d4608 8d54240c } // n = 7, score = 200 // 6a00 | push 0 // 8bf8 | mov edi, eax // ffd3 | call ebx // 894610 | mov dword ptr [esi + 0x10], eax // 89442418 | mov dword ptr [esp + 0x18], eax // 8d4608 | lea eax, [esi + 8] // 8d54240c | lea edx, [esp + 0xc] $sequence_6 = { 50 8d8c245c040000 68???????? 51 } // n = 4, score = 200 // 50 | push eax // 8d8c245c040000 | lea ecx, [esp + 0x45c] // 68???????? | // 51 | push ecx $sequence_7 = { 894c242c 89742438 ff15???????? 6aff 57 ff15???????? } // n = 6, score = 200 // 894c242c | mov dword ptr [esp + 0x2c], ecx // 89742438 | mov dword ptr [esp + 0x38], esi // ff15???????? | // 6aff | push -1 // 57 | push edi // ff15???????? | $sequence_8 = { 6a00 897c2434 894c242c 89742438 } // n = 4, score = 200 // 6a00 | push 0 // 897c2434 | mov dword ptr [esp + 0x34], edi // 894c242c | mov dword ptr [esp + 0x2c], ecx // 89742438 | mov dword ptr [esp + 0x38], esi $sequence_9 = { 33c0 59 c20c00 8b442410 c70044020000 b801000000 } // n = 6, score = 200 // 33c0 | xor eax, eax // 59 | pop ecx // c20c00 | ret 0xc // 8b442410 | mov eax, dword ptr [esp + 0x10] // c70044020000 | mov dword ptr [eax], 0x244 // b801000000 | mov eax, 1 condition: 7 of them and filesize < 286720 }
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