A ransomware that emerged in April 2022.
rule win_industrial_spy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.industrial_spy." 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.industrial_spy" 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 = { f7d1 8d9778a46ad7 23cb 448d8356b7c7e8 418bc3 4123c2 0bc8 } // n = 7, score = 100 // f7d1 | inc ebp // 8d9778a46ad7 | test ebp, ebp // 23cb | inc edx // 448d8356b7c7e8 | movzx eax, byte ptr [edx + edx] // 418bc3 | inc ecx // 4123c2 | shl esi, 8 // 0bc8 | inc esp $sequence_1 = { 8bc3 448bcf 410f104f10 4c8d442430 } // n = 4, score = 100 // 8bc3 | inc ebp // 448bcf | xor eax, eax // 410f104f10 | dec eax // 4c8d442430 | lea edx, [esp + 0x30] $sequence_2 = { 48895c2450 48895c2448 4883e804 4889442440 4533c9 4c8d442444 8b542440 } // n = 7, score = 100 // 48895c2450 | neg esi // 48895c2448 | mov esi, 0xfc0 // 4883e804 | test esi, esi // 4889442440 | je 0x149 // 4533c9 | sub ebp, ebx // 4c8d442444 | inc esp // 8b542440 | mov eax, esi $sequence_3 = { 8b5540 448b4544 4585ed 740f 899380000000 44898384000000 } // n = 6, score = 100 // 8b5540 | dec esp // 448b4544 | lea eax, [0x815d] // 4585ed | dec esp // 740f | lea eax, [0x8149] // 899380000000 | inc ecx // 44898384000000 | seta dl $sequence_4 = { 4c89742420 498bd4 498bcd c644043000 8d4301 0f11440430 410f104720 } // n = 7, score = 100 // 4c89742420 | lea ecx, [esp + 0x30] // 498bd4 | inc esp // 498bcd | mov ecx, ebx // c644043000 | test eax, eax // 8d4301 | js 0x1e11 // 0f11440430 | dec esp // 410f104720 | lea eax, [ebp - 0x40] $sequence_5 = { 4881ec100e0000 4533e4 803d????????1f 7472 448925???????? } // n = 5, score = 100 // 4881ec100e0000 | shl eax, cl // 4533e4 | add ecx, 8 // 803d????????1f | // 7472 | inc esp // 448925???????? | $sequence_6 = { 837c8dc000 7508 ffca 4883e901 } // n = 4, score = 100 // 837c8dc000 | lea ecx, [0x1db2e] // 7508 | mov edx, 0xfa0 // ffca | test eax, eax // 4883e901 | dec eax $sequence_7 = { 0f118424e8010000 f20f108424e0010000 f20f118424f8010000 0f108c24b8010000 0f118c2400020000 f20f108424c8010000 f20f11842410020000 } // n = 7, score = 100 // 0f118424e8010000 | dec eax // f20f108424e0010000 | mov dword ptr [ebp - 0x10], eax // f20f118424f8010000 | movzx esi, byte ptr [edx] // 0f108c24b8010000 | dec ecx // 0f118c2400020000 | add edx, edx // f20f108424c8010000 | inc esp // f20f11842410020000 | mov ebp, dword ptr [ebp + 0x168] $sequence_8 = { 4c8d4d50 895c2420 4c8d85a0030000 488d542430 488d4c2430 e8???????? } // n = 6, score = 100 // 4c8d4d50 | lea ecx, [esi + 0x30] // 895c2420 | jmp 0x542 // 4c8d85a0030000 | cmp eax, 1 // 488d542430 | jne 0x7b3 // 488d4c2430 | inc ecx // e8???????? | $sequence_9 = { 0f8df5000000 e8???????? 488b8890000000 48399938010000 7516 488d05cb030100 } // n = 6, score = 100 // 0f8df5000000 | mov edx, dword ptr [esp + 0x48] // e8???????? | // 488b8890000000 | dec eax // 48399938010000 | mov ecx, esi // 7516 | test eax, eax // 488d05cb030100 | js 0x1ec1 condition: 7 of them and filesize < 339968 }
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