There is no description at this point.
rule win_scanpos_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.scanpos." 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.scanpos" 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 = { 57 33f6 bf???????? 833cf5146b410001 751d 8d04f5106b4100 } // n = 6, score = 200 // 57 | push edi // 33f6 | xor esi, esi // bf???????? | // 833cf5146b410001 | cmp dword ptr [esi*8 + 0x416b14], 1 // 751d | jne 0x1f // 8d04f5106b4100 | lea eax, [esi*8 + 0x416b10] $sequence_1 = { 83f908 7229 f3a5 ff2495d0624000 8bc7 ba03000000 } // n = 6, score = 200 // 83f908 | cmp ecx, 8 // 7229 | jb 0x2b // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // ff2495d0624000 | jmp dword ptr [edx*4 + 0x4062d0] // 8bc7 | mov eax, edi // ba03000000 | mov edx, 3 $sequence_2 = { e8???????? 68???????? 8d4de4 51 c745e4e4114100 } // n = 5, score = 200 // e8???????? | // 68???????? | // 8d4de4 | lea ecx, [ebp - 0x1c] // 51 | push ecx // c745e4e4114100 | mov dword ptr [ebp - 0x1c], 0x4111e4 $sequence_3 = { 6a01 e8???????? 57 6800000080 } // n = 4, score = 200 // 6a01 | push 1 // e8???????? | // 57 | push edi // 6800000080 | push 0x80000000 $sequence_4 = { 57 8bf9 8bd8 2bfa 3bfb 761e } // n = 6, score = 200 // 57 | push edi // 8bf9 | mov edi, ecx // 8bd8 | mov ebx, eax // 2bfa | sub edi, edx // 3bfb | cmp edi, ebx // 761e | jbe 0x20 $sequence_5 = { 33ff 8955e8 3bc3 7c1c 7f04 } // n = 5, score = 200 // 33ff | xor edi, edi // 8955e8 | mov dword ptr [ebp - 0x18], edx // 3bc3 | cmp eax, ebx // 7c1c | jl 0x1e // 7f04 | jg 6 $sequence_6 = { 89742420 897c2424 c7442414e8414100 e8???????? f6c102 743c } // n = 6, score = 200 // 89742420 | mov dword ptr [esp + 0x20], esi // 897c2424 | mov dword ptr [esp + 0x24], edi // c7442414e8414100 | mov dword ptr [esp + 0x14], 0x4141e8 // e8???????? | // f6c102 | test cl, 2 // 743c | je 0x3e $sequence_7 = { 53 ff75e0 50 8b4224 } // n = 4, score = 200 // 53 | push ebx // ff75e0 | push dword ptr [ebp - 0x20] // 50 | push eax // 8b4224 | mov eax, dword ptr [edx + 0x24] $sequence_8 = { 7c12 7f04 3bca 760c 2bca 1bc7 } // n = 6, score = 200 // 7c12 | jl 0x14 // 7f04 | jg 6 // 3bca | cmp ecx, edx // 760c | jbe 0xe // 2bca | sub ecx, edx // 1bc7 | sbb eax, edi $sequence_9 = { 7444 b8???????? 668b10 663b11 } // n = 4, score = 200 // 7444 | je 0x46 // b8???????? | // 668b10 | mov dx, word ptr [eax] // 663b11 | cmp dx, word ptr [ecx] condition: 7 of them and filesize < 229376 }
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