There is no description at this point.
rule win_neutrino_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2021-10-07" version = "1" description = "Detects win.neutrino." 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.neutrino" malpedia_rule_date = "20211007" malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535" malpedia_version = "20211008" 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 = { ff15???????? c1e010 50 ff15???????? } // n = 4, score = 2300 // ff15???????? | // c1e010 | shl eax, 0x10 // 50 | push eax // ff15???????? | $sequence_1 = { 85c0 741b e8???????? 85c0 7412 e8???????? 85c0 } // n = 7, score = 1800 // 85c0 | test eax, eax // 741b | je 0x1d // e8???????? | // 85c0 | test eax, eax // 7412 | je 0x14 // e8???????? | // 85c0 | test eax, eax $sequence_2 = { 50 6a05 6a03 e8???????? } // n = 4, score = 1600 // 50 | push eax // 6a05 | push 5 // 6a03 | push 3 // e8???????? | $sequence_3 = { 50 6a0b 6a07 e8???????? } // n = 4, score = 1600 // 50 | push eax // 6a0b | push 0xb // 6a07 | push 7 // e8???????? | $sequence_4 = { 83fa01 7509 8b4508 83c001 894508 8b4dfc 3b4d14 } // n = 7, score = 1500 // 83fa01 | cmp edx, 1 // 7509 | jne 0xb // 8b4508 | mov eax, dword ptr [ebp + 8] // 83c001 | add eax, 1 // 894508 | mov dword ptr [ebp + 8], eax // 8b4dfc | mov ecx, dword ptr [ebp - 4] // 3b4d14 | cmp ecx, dword ptr [ebp + 0x14] $sequence_5 = { 0404 0404 0404 0402 0202 0202 } // n = 6, score = 1500 // 0404 | add al, 4 // 0404 | add al, 4 // 0404 | add al, 4 // 0402 | add al, 2 // 0202 | add al, byte ptr [edx] // 0202 | add al, byte ptr [edx] $sequence_6 = { 6a00 ff15???????? 6880000000 ff15???????? } // n = 4, score = 1500 // 6a00 | push 0 // ff15???????? | // 6880000000 | push 0x80 // ff15???????? | $sequence_7 = { 52 ff15???????? 83f8ff 7504 32c0 eb02 b001 } // n = 7, score = 1500 // 52 | push edx // ff15???????? | // 83f8ff | cmp eax, -1 // 7504 | jne 6 // 32c0 | xor al, al // eb02 | jmp 4 // b001 | mov al, 1 $sequence_8 = { e9???????? 6a01 ff15???????? 85c0 } // n = 4, score = 1500 // e9???????? | // 6a01 | push 1 // ff15???????? | // 85c0 | test eax, eax $sequence_9 = { 50 ff15???????? 837dfc00 0f95c0 8be5 } // n = 5, score = 1500 // 50 | push eax // ff15???????? | // 837dfc00 | cmp dword ptr [ebp - 4], 0 // 0f95c0 | setne al // 8be5 | mov esp, ebp $sequence_10 = { 3bc2 740b 8b45fc 83c001 8945fc ebdb 8b4dfc } // n = 7, score = 1500 // 3bc2 | cmp eax, edx // 740b | je 0xd // 8b45fc | mov eax, dword ptr [ebp - 4] // 83c001 | add eax, 1 // 8945fc | mov dword ptr [ebp - 4], eax // ebdb | jmp 0xffffffdd // 8b4dfc | mov ecx, dword ptr [ebp - 4] $sequence_11 = { 0fbe08 85c9 7439 8b550c 8955fc 8b45fc 0fbe08 } // n = 7, score = 1500 // 0fbe08 | movsx ecx, byte ptr [eax] // 85c9 | test ecx, ecx // 7439 | je 0x3b // 8b550c | mov edx, dword ptr [ebp + 0xc] // 8955fc | mov dword ptr [ebp - 4], edx // 8b45fc | mov eax, dword ptr [ebp - 4] // 0fbe08 | movsx ecx, byte ptr [eax] $sequence_12 = { 8955f4 ebaf 8b45f4 a3???????? 8b45f8 2b45f4 f7d8 } // n = 7, score = 1500 // 8955f4 | mov dword ptr [ebp - 0xc], edx // ebaf | jmp 0xffffffb1 // 8b45f4 | mov eax, dword ptr [ebp - 0xc] // a3???????? | // 8b45f8 | mov eax, dword ptr [ebp - 8] // 2b45f4 | sub eax, dword ptr [ebp - 0xc] // f7d8 | neg eax $sequence_13 = { 010404 0202 020402 0404 0404 0404 } // n = 6, score = 1500 // 010404 | add dword ptr [esp + eax], eax // 0202 | add al, byte ptr [edx] // 020402 | add al, byte ptr [edx + eax] // 0404 | add al, 4 // 0404 | add al, 4 // 0404 | add al, 4 $sequence_14 = { 6a00 6a00 e8???????? 83c40c 0fb6c0 } // n = 5, score = 1500 // 6a00 | push 0 // 6a00 | push 0 // e8???????? | // 83c40c | add esp, 0xc // 0fb6c0 | movzx eax, al $sequence_15 = { 0fb655e7 52 8b45e0 50 e8???????? } // n = 5, score = 1500 // 0fb655e7 | movzx edx, byte ptr [ebp - 0x19] // 52 | push edx // 8b45e0 | mov eax, dword ptr [ebp - 0x20] // 50 | push eax // e8???????? | $sequence_16 = { 0404 010404 0202 020402 } // n = 4, score = 1500 // 0404 | add al, 4 // 010404 | add dword ptr [esp + eax], eax // 0202 | add al, byte ptr [edx] // 020402 | add al, byte ptr [edx + eax] $sequence_17 = { 8955fc 8b45fc 0fbe08 85c9 741b 8b55fc 0fbe02 } // n = 7, score = 1500 // 8955fc | mov dword ptr [ebp - 4], edx // 8b45fc | mov eax, dword ptr [ebp - 4] // 0fbe08 | movsx ecx, byte ptr [eax] // 85c9 | test ecx, ecx // 741b | je 0x1d // 8b55fc | mov edx, dword ptr [ebp - 4] // 0fbe02 | movsx eax, byte ptr [edx] $sequence_18 = { 8b45fc 83c001 8945fc 8b4d08 83c101 894d08 0fb6550c } // n = 7, score = 1500 // 8b45fc | mov eax, dword ptr [ebp - 4] // 83c001 | add eax, 1 // 8945fc | mov dword ptr [ebp - 4], eax // 8b4d08 | mov ecx, dword ptr [ebp + 8] // 83c101 | add ecx, 1 // 894d08 | mov dword ptr [ebp + 8], ecx // 0fb6550c | movzx edx, byte ptr [ebp + 0xc] $sequence_19 = { 83c6fb a5 66a5 eb01 a5 } // n = 5, score = 1300 // 83c6fb | add esi, -5 // a5 | movsd dword ptr es:[edi], dword ptr [esi] // 66a5 | movsw word ptr es:[edi], word ptr [esi] // eb01 | jmp 3 // a5 | movsd dword ptr es:[edi], dword ptr [esi] $sequence_20 = { 33d2 81e100f0ffff eb08 3bc1 7409 8bd0 8b00 } // n = 7, score = 1300 // 33d2 | xor edx, edx // 81e100f0ffff | and ecx, 0xfffff000 // eb08 | jmp 0xa // 3bc1 | cmp eax, ecx // 7409 | je 0xb // 8bd0 | mov edx, eax // 8b00 | mov eax, dword ptr [eax] $sequence_21 = { 8d85b8feffff 50 68???????? ff15???????? } // n = 4, score = 1100 // 8d85b8feffff | lea eax, dword ptr [ebp - 0x148] // 50 | push eax // 68???????? | // ff15???????? | $sequence_22 = { 55 8bec 81ecf80f0000 837d0800 } // n = 4, score = 1100 // 55 | push ebp // 8bec | mov ebp, esp // 81ecf80f0000 | sub esp, 0xff8 // 837d0800 | cmp dword ptr [ebp + 8], 0 $sequence_23 = { 83c40c 6804010000 8d85f8fdffff 50 } // n = 4, score = 1000 // 83c40c | add esp, 0xc // 6804010000 | push 0x104 // 8d85f8fdffff | lea eax, dword ptr [ebp - 0x208] // 50 | push eax $sequence_24 = { 53 e8???????? 8d8508f0ffff 50 e8???????? 59 59 } // n = 7, score = 900 // 53 | push ebx // e8???????? | // 8d8508f0ffff | lea eax, dword ptr [ebp - 0xff8] // 50 | push eax // e8???????? | // 59 | pop ecx // 59 | pop ecx $sequence_25 = { 84c0 740f 8b45f8 85c0 7408 } // n = 5, score = 900 // 84c0 | test al, al // 740f | je 0x11 // 8b45f8 | mov eax, dword ptr [ebp - 8] // 85c0 | test eax, eax // 7408 | je 0xa $sequence_26 = { 8930 8b4518 2bf7 8930 } // n = 4, score = 900 // 8930 | mov dword ptr [eax], esi // 8b4518 | mov eax, dword ptr [ebp + 0x18] // 2bf7 | sub esi, edi // 8930 | mov dword ptr [eax], esi $sequence_27 = { b301 ff750c e8???????? 59 8ac3 e9???????? } // n = 6, score = 900 // b301 | mov bl, 1 // ff750c | push dword ptr [ebp + 0xc] // e8???????? | // 59 | pop ecx // 8ac3 | mov al, bl // e9???????? | $sequence_28 = { 85c0 7408 c6040600 8bc6 eb02 33c0 } // n = 6, score = 900 // 85c0 | test eax, eax // 7408 | je 0xa // c6040600 | mov byte ptr [esi + eax], 0 // 8bc6 | mov eax, esi // eb02 | jmp 4 // 33c0 | xor eax, eax $sequence_29 = { 8bc6 2bc3 50 53 ff75fc } // n = 5, score = 800 // 8bc6 | mov eax, esi // 2bc3 | sub eax, ebx // 50 | push eax // 53 | push ebx // ff75fc | push dword ptr [ebp - 4] $sequence_30 = { 7522 be???????? ff15???????? 57 8906 ff15???????? 83c604 } // n = 7, score = 800 // 7522 | jne 0x24 // be???????? | // ff15???????? | // 57 | push edi // 8906 | mov dword ptr [esi], eax // ff15???????? | // 83c604 | add esi, 4 $sequence_31 = { 5b c9 c3 83c004 74ed 8b4d0c } // n = 6, score = 800 // 5b | pop ebx // c9 | leave // c3 | ret // 83c004 | add eax, 4 // 74ed | je 0xffffffef // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] $sequence_32 = { 8bd8 59 59 85db 7405 83c303 } // n = 6, score = 800 // 8bd8 | mov ebx, eax // 59 | pop ecx // 59 | pop ecx // 85db | test ebx, ebx // 7405 | je 7 // 83c303 | add ebx, 3 $sequence_33 = { c3 6a01 ff15???????? 59 } // n = 4, score = 800 // c3 | ret // 6a01 | push 1 // ff15???????? | // 59 | pop ecx condition: 7 of them and filesize < 507904 }
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