There is no description at this point.
rule win_whiskerspy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-03-28" version = "1" description = "Detects win.whiskerspy." 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.whiskerspy" malpedia_rule_date = "20230328" malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d" malpedia_version = "20230407" 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 = { 33ff 8b06 8bcf d3e8 a801 } // n = 5, score = 300 // 33ff | xor edi, edi // 8b06 | mov eax, dword ptr [esi] // 8bcf | mov ecx, edi // d3e8 | shr eax, cl // a801 | test al, 1 $sequence_1 = { 4c8d9c2460010000 498b5b10 498b7318 498b7b20 4d8b7328 } // n = 5, score = 200 // 4c8d9c2460010000 | dec eax // 498b5b10 | lea edx, [esp + 0x48] // 498b7318 | inc ecx // 498b7b20 | cmp esi, edi // 4d8b7328 | jne 0x3e $sequence_2 = { 4c8d8590000000 488d55c8 488d4d98 ff15???????? } // n = 4, score = 200 // 4c8d8590000000 | dec esp // 488d55c8 | lea eax, [ebp + 0x90] // 488d4d98 | dec eax // ff15???????? | $sequence_3 = { 4c8d85b4010000 c785b401000080f10000 498bce 418d511b } // n = 4, score = 200 // 4c8d85b4010000 | lea ecx, [ebp - 0x68] // c785b401000080f10000 | xorps xmm0, xmm0 // 498bce | xor eax, eax // 418d511b | dec esp $sequence_4 = { 4c8d8d80010000 488d442460 33c9 4889442420 } // n = 4, score = 200 // 4c8d8d80010000 | dec esp // 488d442460 | lea eax, [ebp + 0x1b4] // 33c9 | mov dword ptr [ebp + 0x1b4], 0xf180 // 4889442420 | dec ecx $sequence_5 = { 4c8d9c24b0010000 498b5b30 498b7340 498b7b48 410f2873f0 } // n = 5, score = 200 // 4c8d9c24b0010000 | jne 0x3e // 498b5b30 | inc ecx // 498b7340 | mov eax, ebp // 498b7b48 | dec esp // 410f2873f0 | lea ecx, [ebp + 0x98] $sequence_6 = { 4c8d8de0000000 4489742428 488d9538020000 41b802000000 } // n = 4, score = 200 // 4c8d8de0000000 | lea ecx, [ebp + 0x180] // 4489742428 | dec eax // 488d9538020000 | lea eax, [esp + 0x60] // 41b802000000 | xor ecx, ecx $sequence_7 = { 4c8d8d98000000 488d542448 413bf7 7534 } // n = 4, score = 200 // 4c8d8d98000000 | inc ecx // 488d542448 | lea edx, [ecx + 0x1b] // 413bf7 | xor edx, edx // 7534 | dec eax $sequence_8 = { 015dd0 eb09 51 8d4dcc } // n = 4, score = 100 // 015dd0 | inc ecx // eb09 | cmp esi, edi // 51 | jne 0x3e // 8d4dcc | inc ecx $sequence_9 = { 0130 8b7510 83794c00 8bd3 } // n = 4, score = 100 // 0130 | dec eax // 8b7510 | lea eax, [esp + 0x60] // 83794c00 | xor ecx, ecx // 8bd3 | dec eax $sequence_10 = { 0144241c 2bd8 83c410 8bd3 } // n = 4, score = 100 // 0144241c | mov dword ptr [esp + 0x20], eax // 2bd8 | inc esp // 83c410 | lea eax, [edx + 1] // 8bd3 | dec esp $sequence_11 = { 015508 85ff 0f8f6cffffff 7c08 } // n = 4, score = 100 // 015508 | lea ecx, [ebp + 0x98] // 85ff | dec eax // 0f8f6cffffff | lea edx, [esp + 0x48] // 7c08 | inc ecx $sequence_12 = { 0110 eb23 8b4508 8b11 } // n = 4, score = 100 // 0110 | inc ecx // eb23 | lea edx, [ecx + 0x1b] // 8b4508 | dec esp // 8b11 | lea eax, [ebp + 0x1b4] $sequence_13 = { 015de8 eb09 50 8d4de4 } // n = 4, score = 100 // 015de8 | mov dword ptr [esp + 0x28], esi // eb09 | dec eax // 50 | lea edx, [ebp + 0x238] // 8d4de4 | inc ecx $sequence_14 = { 0110 8b4508 eb25 8b01 ff501c 0fb7c8 b8ffff0000 } // n = 7, score = 100 // 0110 | inc ecx // 8b4508 | lea edx, [ecx + 0x1b] // eb25 | dec esp // 8b01 | lea eax, [ebp + 0x1b4] // ff501c | mov dword ptr [ebp + 0x1b4], 0xf180 // 0fb7c8 | dec ecx // b8ffff0000 | mov ecx, esi condition: 7 of them and filesize < 591872 }
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