There is no description at this point.
rule win_scranos_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.scranos." 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.scranos" 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 = { e8???????? 83c404 8b55cc 8d440201 8945cc ebb5 8b4de4 } // n = 7, score = 100 // e8???????? | // 83c404 | add esp, 4 // 8b55cc | mov edx, dword ptr [ebp - 0x34] // 8d440201 | lea eax, [edx + eax + 1] // 8945cc | mov dword ptr [ebp - 0x34], eax // ebb5 | jmp 0xffffffb7 // 8b4de4 | mov ecx, dword ptr [ebp - 0x1c] $sequence_1 = { 8b8e70010000 8d542430 52 8b966c010000 8d442438 50 8d86b0030000 } // n = 7, score = 100 // 8b8e70010000 | mov ecx, dword ptr [esi + 0x170] // 8d542430 | lea edx, [esp + 0x30] // 52 | push edx // 8b966c010000 | mov edx, dword ptr [esi + 0x16c] // 8d442438 | lea eax, [esp + 0x38] // 50 | push eax // 8d86b0030000 | lea eax, [esi + 0x3b0] $sequence_2 = { eb13 8b4608 8b4e04 8b16 50 51 52 } // n = 7, score = 100 // eb13 | jmp 0x15 // 8b4608 | mov eax, dword ptr [esi + 8] // 8b4e04 | mov ecx, dword ptr [esi + 4] // 8b16 | mov edx, dword ptr [esi] // 50 | push eax // 51 | push ecx // 52 | push edx $sequence_3 = { e8???????? 83c428 e9???????? 8b55ec 8b42e4 50 8b4df4 } // n = 7, score = 100 // e8???????? | // 83c428 | add esp, 0x28 // e9???????? | // 8b55ec | mov edx, dword ptr [ebp - 0x14] // 8b42e4 | mov eax, dword ptr [edx - 0x1c] // 50 | push eax // 8b4df4 | mov ecx, dword ptr [ebp - 0xc] $sequence_4 = { e8???????? 83c40c 85c0 0f8515070000 8b54241c 52 56 } // n = 7, score = 100 // e8???????? | // 83c40c | add esp, 0xc // 85c0 | test eax, eax // 0f8515070000 | jne 0x71b // 8b54241c | mov edx, dword ptr [esp + 0x1c] // 52 | push edx // 56 | push esi $sequence_5 = { 89834c010000 7523 8b542410 52 8d442420 50 8d8bc8000000 } // n = 7, score = 100 // 89834c010000 | mov dword ptr [ebx + 0x14c], eax // 7523 | jne 0x25 // 8b542410 | mov edx, dword ptr [esp + 0x10] // 52 | push edx // 8d442420 | lea eax, [esp + 0x20] // 50 | push eax // 8d8bc8000000 | lea ecx, [ebx + 0xc8] $sequence_6 = { 8b4d24 e8???????? 8945a0 8b4da0 894d9c c745fc00000000 8d55ac } // n = 7, score = 100 // 8b4d24 | mov ecx, dword ptr [ebp + 0x24] // e8???????? | // 8945a0 | mov dword ptr [ebp - 0x60], eax // 8b4da0 | mov ecx, dword ptr [ebp - 0x60] // 894d9c | mov dword ptr [ebp - 0x64], ecx // c745fc00000000 | mov dword ptr [ebp - 4], 0 // 8d55ac | lea edx, [ebp - 0x54] $sequence_7 = { 8b55e8 8b849544ffffff 89448d8c 8b4de8 8b948d30ffffff 8b4248 8b4de8 } // n = 7, score = 100 // 8b55e8 | mov edx, dword ptr [ebp - 0x18] // 8b849544ffffff | mov eax, dword ptr [ebp + edx*4 - 0xbc] // 89448d8c | mov dword ptr [ebp + ecx*4 - 0x74], eax // 8b4de8 | mov ecx, dword ptr [ebp - 0x18] // 8b948d30ffffff | mov edx, dword ptr [ebp + ecx*4 - 0xd0] // 8b4248 | mov eax, dword ptr [edx + 0x48] // 8b4de8 | mov ecx, dword ptr [ebp - 0x18] $sequence_8 = { 8b6c2410 57 8b7d00 8b87840c0000 81c7680c0000 8d4f0c 8944240c } // n = 7, score = 100 // 8b6c2410 | mov ebp, dword ptr [esp + 0x10] // 57 | push edi // 8b7d00 | mov edi, dword ptr [ebp] // 8b87840c0000 | mov eax, dword ptr [edi + 0xc84] // 81c7680c0000 | add edi, 0xc68 // 8d4f0c | lea ecx, [edi + 0xc] // 8944240c | mov dword ptr [esp + 0xc], eax $sequence_9 = { c645fc00 8d4dc8 e8???????? c745fcffffffff 8d4da8 e8???????? 8b4594 } // n = 7, score = 100 // c645fc00 | mov byte ptr [ebp - 4], 0 // 8d4dc8 | lea ecx, [ebp - 0x38] // e8???????? | // c745fcffffffff | mov dword ptr [ebp - 4], 0xffffffff // 8d4da8 | lea ecx, [ebp - 0x58] // e8???????? | // 8b4594 | mov eax, dword ptr [ebp - 0x6c] condition: 7 of them and filesize < 2859008 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below. Changes regarding references should be proposed on the Malpedia library page.
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY