There is no description at this point.
rule win_iispy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-05-16" version = "1" description = "Detects win.iispy." 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.iispy" malpedia_rule_date = "20220513" malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26" malpedia_version = "20220516" 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 = { c745c400000000 68???????? 8d4da0 c745b000000000 0f1145a0 c745b400000000 c745b800000000 } // n = 7, score = 100 // c745c400000000 | mov dword ptr [ebp - 0x3c], 0 // 68???????? | // 8d4da0 | lea ecx, [ebp - 0x60] // c745b000000000 | mov dword ptr [ebp - 0x50], 0 // 0f1145a0 | movups xmmword ptr [ebp - 0x60], xmm0 // c745b400000000 | mov dword ptr [ebp - 0x4c], 0 // c745b800000000 | mov dword ptr [ebp - 0x48], 0 $sequence_1 = { 894b1c 5f 5e 5b 8be5 5d c20800 } // n = 7, score = 100 // 894b1c | mov dword ptr [ebx + 0x1c], ecx // 5f | pop edi // 5e | pop esi // 5b | pop ebx // 8be5 | mov esp, ebp // 5d | pop ebp // c20800 | ret 8 $sequence_2 = { 6b45e430 8945e0 8d8010c60210 8945e4 803800 } // n = 5, score = 100 // 6b45e430 | imul eax, dword ptr [ebp - 0x1c], 0x30 // 8945e0 | mov dword ptr [ebp - 0x20], eax // 8d8010c60210 | lea eax, [eax + 0x1002c610] // 8945e4 | mov dword ptr [ebp - 0x1c], eax // 803800 | cmp byte ptr [eax], 0 $sequence_3 = { c745dc00000000 0f1145c4 6a0a 68???????? e8???????? 8b45c0 c745fc03000000 } // n = 7, score = 100 // c745dc00000000 | mov dword ptr [ebp - 0x24], 0 // 0f1145c4 | movups xmmword ptr [ebp - 0x3c], xmm0 // 6a0a | push 0xa // 68???????? | // e8???????? | // 8b45c0 | mov eax, dword ptr [ebp - 0x40] // c745fc03000000 | mov dword ptr [ebp - 4], 3 $sequence_4 = { ff75d4 e8???????? 83c404 6a01 ff75cc e8???????? 83c408 } // n = 7, score = 100 // ff75d4 | push dword ptr [ebp - 0x2c] // e8???????? | // 83c404 | add esp, 4 // 6a01 | push 1 // ff75cc | push dword ptr [ebp - 0x34] // e8???????? | // 83c408 | add esp, 8 $sequence_5 = { 83e803 0f84e9000000 83e801 747c 83e801 7415 } // n = 6, score = 100 // 83e803 | sub eax, 3 // 0f84e9000000 | je 0xef // 83e801 | sub eax, 1 // 747c | je 0x7e // 83e801 | sub eax, 1 // 7415 | je 0x17 $sequence_6 = { 85c0 c744241000000000 0f45c8 8d442410 51 } // n = 5, score = 100 // 85c0 | test eax, eax // c744241000000000 | mov dword ptr [esp + 0x10], 0 // 0f45c8 | cmovne ecx, eax // 8d442410 | lea eax, [esp + 0x10] // 51 | push ecx $sequence_7 = { f7d1 8bc2 234604 234e08 0bc8 660f7ec0 } // n = 6, score = 100 // f7d1 | not ecx // 8bc2 | mov eax, edx // 234604 | and eax, dword ptr [esi + 4] // 234e08 | and ecx, dword ptr [esi + 8] // 0bc8 | or ecx, eax // 660f7ec0 | movd eax, xmm0 $sequence_8 = { 8bc1 8b4804 8bd1 8b700c f7d2 2310 8bc6 } // n = 7, score = 100 // 8bc1 | mov eax, ecx // 8b4804 | mov ecx, dword ptr [eax + 4] // 8bd1 | mov edx, ecx // 8b700c | mov esi, dword ptr [eax + 0xc] // f7d2 | not edx // 2310 | and edx, dword ptr [eax] // 8bc6 | mov eax, esi $sequence_9 = { e8???????? c745fc03000000 8b4618 51 8d4da0 ff7010 50 } // n = 7, score = 100 // e8???????? | // c745fc03000000 | mov dword ptr [ebp - 4], 3 // 8b4618 | mov eax, dword ptr [esi + 0x18] // 51 | push ecx // 8d4da0 | lea ecx, [ebp - 0x60] // ff7010 | push dword ptr [eax + 0x10] // 50 | push eax condition: 7 of them and filesize < 397312 }
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