Actor(s): Naikon
There is no description at this point.
rule win_sslmm_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.sslmm." 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.sslmm" 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 = { 83c408 68???????? 56 ffd3 3bc7 750d 5f } // n = 7, score = 400 // 83c408 | add esp, 8 // 68???????? | // 56 | push esi // ffd3 | call ebx // 3bc7 | cmp eax, edi // 750d | jne 0xf // 5f | pop edi $sequence_1 = { 51 89869c000000 e8???????? 8b9790000000 83c408 899690000000 8b878c000000 } // n = 7, score = 400 // 51 | push ecx // 89869c000000 | mov dword ptr [esi + 0x9c], eax // e8???????? | // 8b9790000000 | mov edx, dword ptr [edi + 0x90] // 83c408 | add esp, 8 // 899690000000 | mov dword ptr [esi + 0x90], edx // 8b878c000000 | mov eax, dword ptr [edi + 0x8c] $sequence_2 = { 33db 57 8b85ac000000 53 } // n = 4, score = 400 // 33db | xor ebx, ebx // 57 | push edi // 8b85ac000000 | mov eax, dword ptr [ebp + 0xac] // 53 | push ebx $sequence_3 = { 3bc6 7c7b 33d2 33c9 8d442454 be03000000 85d2 } // n = 7, score = 400 // 3bc6 | cmp eax, esi // 7c7b | jl 0x7d // 33d2 | xor edx, edx // 33c9 | xor ecx, ecx // 8d442454 | lea eax, [esp + 0x54] // be03000000 | mov esi, 3 // 85d2 | test edx, edx $sequence_4 = { 85c0 7448 6681384d5a 7541 8b483c 03c8 813950450000 } // n = 7, score = 400 // 85c0 | test eax, eax // 7448 | je 0x4a // 6681384d5a | cmp word ptr [eax], 0x5a4d // 7541 | jne 0x43 // 8b483c | mov ecx, dword ptr [eax + 0x3c] // 03c8 | add ecx, eax // 813950450000 | cmp dword ptr [ecx], 0x4550 $sequence_5 = { 6801010000 ff15???????? 83f8ff 750d 5f } // n = 5, score = 400 // 6801010000 | push 0x101 // ff15???????? | // 83f8ff | cmp eax, -1 // 750d | jne 0xf // 5f | pop edi $sequence_6 = { 3bfb 7c4e 8b442428 3bc3 } // n = 4, score = 400 // 3bfb | cmp edi, ebx // 7c4e | jl 0x50 // 8b442428 | mov eax, dword ptr [esp + 0x28] // 3bc3 | cmp eax, ebx $sequence_7 = { e8???????? 85c0 7538 8b442434 } // n = 4, score = 400 // e8???????? | // 85c0 | test eax, eax // 7538 | jne 0x3a // 8b442434 | mov eax, dword ptr [esp + 0x34] $sequence_8 = { 85c9 c70204000000 7410 c786a800000001000000 8986ac000000 } // n = 5, score = 400 // 85c9 | test ecx, ecx // c70204000000 | mov dword ptr [edx], 4 // 7410 | je 0x12 // c786a800000001000000 | mov dword ptr [esi + 0xa8], 1 // 8986ac000000 | mov dword ptr [esi + 0xac], eax $sequence_9 = { 6a01 52 8d9e94000000 ff15???????? 57 8903 e8???????? } // n = 7, score = 400 // 6a01 | push 1 // 52 | push edx // 8d9e94000000 | lea ebx, [esi + 0x94] // ff15???????? | // 57 | push edi // 8903 | mov dword ptr [ebx], eax // e8???????? | condition: 7 of them and filesize < 188416 }
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