Actor(s): Winnti Umbrella
There is no description at this point.
rule win_pipemon_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-03-28" version = "1" description = "Detects win.pipemon." 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.pipemon" 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 = { 458bc5 498bd7 488bc8 e8???????? 4885c0 7412 } // n = 6, score = 100 // 458bc5 | dec eax // 498bd7 | lea ecx, [0x21363] // 488bc8 | test eax, eax // e8???????? | // 4885c0 | je 0x80 // 7412 | dec eax $sequence_1 = { 8b4de0 e8???????? e9???????? 488d0541360100 4a8b04e8 42f644303840 7409 } // n = 7, score = 100 // 8b4de0 | mov ecx, ebx // e8???????? | // e9???????? | // 488d0541360100 | dec eax // 4a8b04e8 | lea edx, [ebp + 0x400] // 42f644303840 | dec esp // 7409 | lea eax, [ebp - 0x21] $sequence_2 = { 488d8d00030000 e8???????? 85c0 0f85b1000000 4c8d8500040000 } // n = 5, score = 100 // 488d8d00030000 | lea edi, [0xffff0dce] // e8???????? | // 85c0 | dec ebp // 0f85b1000000 | mov esp, ecx // 4c8d8500040000 | dec ecx $sequence_3 = { 488d542468 488d4c2438 e8???????? 488b4c2438 e8???????? 498bc4 488b8d00080000 } // n = 7, score = 100 // 488d542468 | sub esp, 0x20 // 488d4c2438 | dec eax // e8???????? | // 488b4c2438 | mov ebx, ecx // e8???????? | // 498bc4 | dec eax // 488b8d00080000 | lea edi, [0xfffe700c] $sequence_4 = { 83caff 488d0d88470200 ff15???????? 85c0 751f } // n = 5, score = 100 // 83caff | inc ecx // 488d0d88470200 | pop esi // ff15???????? | // 85c0 | inc ecx // 751f | pop ebp $sequence_5 = { 33d2 33c9 ff15???????? 4c89642430 4489642428 } // n = 5, score = 100 // 33d2 | jne 0xef // 33c9 | dec eax // ff15???????? | // 4c89642430 | lea eax, [0x15cb2] // 4489642428 | dec eax $sequence_6 = { 8801 48ffc1 4983e801 75ee } // n = 4, score = 100 // 8801 | sar esi, 6 // 48ffc1 | dec esp // 4983e801 | lea ebp, [0x13966] // 75ee | and esi, 0x3f $sequence_7 = { 0f82b4010000 66ffc2 66413bd3 72d6 458bc7 410fb75a14 448b4d1c } // n = 7, score = 100 // 0f82b4010000 | mov dword ptr [esi], edi // 66ffc2 | xor edx, edx // 66413bd3 | lea ecx, [edx + 2] // 72d6 | jne 0x56d // 458bc7 | jmp 0x59d // 410fb75a14 | dec esp // 448b4d1c | lea eax, [ebp - 0x24] $sequence_8 = { 488d3d2c3b0100 482bfe 8a041f 8803 48ffc3 4883ed01 75f2 } // n = 7, score = 100 // 488d3d2c3b0100 | mov dword ptr [ebp - 8], eax // 482bfe | mov eax, 4 // 8a041f | mov dword ptr [ebp - 0x30], eax // 8803 | mov dword ptr [ebp - 0x2c], eax // 48ffc3 | dec eax // 4883ed01 | lea eax, [0x17625] // 75f2 | dec eax $sequence_9 = { 8945fb 448d4004 ff15???????? 85c0 7576 } // n = 5, score = 100 // 8945fb | dec eax // 448d4004 | lea edx, [ebx + 8] // ff15???????? | // 85c0 | dec eax // 7576 | mov ebx, ecx condition: 7 of them and filesize < 389120 }
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