There is no description at this point.
rule win_woodyrat_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.woodyrat." 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.woodyrat" malpedia_rule_date = "20231130" malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351" malpedia_version = "20230808" 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 = { 8b75ec 8985a4ebffff ffb5bcebffff e8???????? 8b7de4 83c404 837de800 } // n = 7, score = 100 // 8b75ec | mov esi, dword ptr [ebp - 0x14] // 8985a4ebffff | mov dword ptr [ebp - 0x145c], eax // ffb5bcebffff | push dword ptr [ebp - 0x1444] // e8???????? | // 8b7de4 | mov edi, dword ptr [ebp - 0x1c] // 83c404 | add esp, 4 // 837de800 | cmp dword ptr [ebp - 0x18], 0 $sequence_1 = { 8d4e4c 54 6a00 e8???????? 8bc8 e8???????? 8d4dd8 } // n = 7, score = 100 // 8d4e4c | lea ecx, [esi + 0x4c] // 54 | push esp // 6a00 | push 0 // e8???????? | // 8bc8 | mov ecx, eax // e8???????? | // 8d4dd8 | lea ecx, [ebp - 0x28] $sequence_2 = { 8d4710 50 8d45cc 50 e8???????? 84c0 7403 } // n = 7, score = 100 // 8d4710 | lea eax, [edi + 0x10] // 50 | push eax // 8d45cc | lea eax, [ebp - 0x34] // 50 | push eax // e8???????? | // 84c0 | test al, al // 7403 | je 5 $sequence_3 = { e8???????? c645fc03 8b55cc 83fa10 722c 8b4db8 42 } // n = 7, score = 100 // e8???????? | // c645fc03 | mov byte ptr [ebp - 4], 3 // 8b55cc | mov edx, dword ptr [ebp - 0x34] // 83fa10 | cmp edx, 0x10 // 722c | jb 0x2e // 8b4db8 | mov ecx, dword ptr [ebp - 0x48] // 42 | inc edx $sequence_4 = { 8b4328 8bd8 3bfb 742d 8b0f 8b01 ff5008 } // n = 7, score = 100 // 8b4328 | mov eax, dword ptr [ebx + 0x28] // 8bd8 | mov ebx, eax // 3bfb | cmp edi, ebx // 742d | je 0x2f // 8b0f | mov ecx, dword ptr [edi] // 8b01 | mov eax, dword ptr [ecx] // ff5008 | call dword ptr [eax + 8] $sequence_5 = { 8bc8 83781410 7202 8b08 83781004 753b 8b01 } // n = 7, score = 100 // 8bc8 | mov ecx, eax // 83781410 | cmp dword ptr [eax + 0x14], 0x10 // 7202 | jb 4 // 8b08 | mov ecx, dword ptr [eax] // 83781004 | cmp dword ptr [eax + 0x10], 4 // 753b | jne 0x3d // 8b01 | mov eax, dword ptr [ecx] $sequence_6 = { 83c408 8d4508 6a00 84db 7428 837d1c08 6800000002 } // n = 7, score = 100 // 83c408 | add esp, 8 // 8d4508 | lea eax, [ebp + 8] // 6a00 | push 0 // 84db | test bl, bl // 7428 | je 0x2a // 837d1c08 | cmp dword ptr [ebp + 0x1c], 8 // 6800000002 | push 0x2000000 $sequence_7 = { 50 e8???????? 8b7d80 83c404 e9???????? c645fc00 } // n = 6, score = 100 // 50 | push eax // e8???????? | // 8b7d80 | mov edi, dword ptr [ebp - 0x80] // 83c404 | add esp, 4 // e9???????? | // c645fc00 | mov byte ptr [ebp - 4], 0 $sequence_8 = { 7607 be55555515 eb07 03f1 3bf2 0f42f2 } // n = 6, score = 100 // 7607 | jbe 9 // be55555515 | mov esi, 0x15555555 // eb07 | jmp 9 // 03f1 | add esi, ecx // 3bf2 | cmp esi, edx // 0f42f2 | cmovb esi, edx $sequence_9 = { 745d 40 50 e8???????? 8bf0 8b45c8 40 } // n = 7, score = 100 // 745d | je 0x5f // 40 | inc eax // 50 | push eax // e8???????? | // 8bf0 | mov esi, eax // 8b45c8 | mov eax, dword ptr [ebp - 0x38] // 40 | inc eax condition: 7 of them and filesize < 785408 }
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