Actor(s): MosesStaff
There is no description at this point.
rule win_strifewater_rat_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.strifewater_rat." 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.strifewater_rat" 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 = { 480fbfc2 488d0c00 0fb70419 66413bc0 75e5 664103d2 } // n = 6, score = 100 // 480fbfc2 | mov word ptr [ebp + 0x140], si // 488d0c00 | jmp 0x1ba2 // 0fb70419 | dec eax // 66413bc0 | mov dword ptr [ebp + 0x168], 0xf // 75e5 | dec esp // 664103d2 | mov dword ptr [ebp + 0x160], edi $sequence_1 = { 6644393c5a 75f6 85db 0f84cf000000 488b07 488bf5 } // n = 6, score = 100 // 6644393c5a | dec eax // 75f6 | mov dword ptr [esp + 0x28], esi // 85db | dec eax // 0f84cf000000 | lea eax, [0x8e80a] // 488b07 | dec eax // 488bf5 | mov dword ptr [esp + 0x20], eax $sequence_2 = { 89442448 8d78ff 488d05ccfbf9ff 0fb68cb832b30800 0fb6b4b833b30800 8bd9 48c1e302 } // n = 7, score = 100 // 89442448 | test eax, eax // 8d78ff | jne 0x22a // 488d05ccfbf9ff | dec eax // 0fb68cb832b30800 | lea ecx, [0x1c7cc] // 0fb6b4b833b30800 | cmp si, word ptr [ecx] // 8bd9 | dec eax // 48c1e302 | mov ecx, dword ptr [ebp + 0xa0] $sequence_3 = { 488d0535ea0500 488906 eb03 498bf6 4c8b05???????? 4d85c0 } // n = 6, score = 100 // 488d0535ea0500 | dec eax // 488906 | mov dword ptr [ebp + 0x330], eax // eb03 | dec esp // 498bf6 | mov dword ptr [esp + 0x48], ecx // 4c8b05???????? | // 4d85c0 | dec esp $sequence_4 = { f20f5cca f2410f590cc1 660f28d1 660f28c1 4c8d0d9ba30100 f20f101d???????? f20f100d???????? } // n = 7, score = 100 // f20f5cca | dec eax // f2410f590cc1 | lea edx, [0x6f3df] // 660f28d1 | dec eax // 660f28c1 | lea ecx, [esp + 0x20] // 4c8d0d9ba30100 | dec eax // f20f101d???????? | // f20f100d???????? | $sequence_5 = { 85c0 0f4ed0 488d4c2430 e8???????? 488d15ece40600 } // n = 5, score = 100 // 85c0 | mov eax, ebx // 0f4ed0 | dec eax // 488d4c2430 | lea eax, [ebp - 0x18] // e8???????? | // 488d15ece40600 | dec eax $sequence_6 = { 4883ec20 488d05fb800300 488bd9 488901 488d05566d0300 48894110 f6c201 } // n = 7, score = 100 // 4883ec20 | lea edx, [0x2a5c1] // 488d05fb800300 | dec eax // 488bd9 | mov ebx, eax // 488901 | dec eax // 488d05566d0300 | test eax, eax // 48894110 | mov ecx, 4 // f6c201 | dec esp $sequence_7 = { 48897820 4156 4883ec20 458bf1 418bd8 488bfa 4c8d0da3360200 } // n = 7, score = 100 // 48897820 | lea ecx, [esp + 0x20] // 4156 | int3 // 4883ec20 | dec eax // 458bf1 | lea ecx, [esp + 0x38] // 418bd8 | dec eax // 488bfa | lea edx, [0x56582] // 4c8d0da3360200 | dec eax $sequence_8 = { 488d4c2440 e8???????? cc 488d158b630400 488d4c2440 e8???????? } // n = 6, score = 100 // 488d4c2440 | and dword ptr [eax + 8], 0 // e8???????? | // cc | dec eax // 488d158b630400 | lea eax, [0x6a97e] // 488d4c2440 | dec eax // e8???????? | $sequence_9 = { 488d5f18 488b07 4889442420 448b4f08 448b4710 488bd3 8b4f38 } // n = 7, score = 100 // 488d5f18 | lea ecx, [0x3e2d5] // 488b07 | test byte ptr [ecx + 0x38], 0x20 // 4889442420 | je 0x5d5 // 448b4f08 | xor edx, edx // 448b4710 | inc ecx // 488bd3 | mov ecx, ecx // 8b4f38 | dec eax condition: 7 of them and filesize < 1552384 }
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