A ransomware that emerged in April 2022.
rule win_industrial_spy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" 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 = "20230705" malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41" malpedia_version = "20230715" 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 = { e8???????? 4c8b8db0010000 488d5544 4c8bc6 895c2420 488d8dc8000000 } // n = 6, score = 100 // e8???????? | // 4c8b8db0010000 | mov dword ptr [edx], eax // 488d5544 | inc ecx // 4c8bc6 | movzx eax, byte ptr [ecx + 4] // 895c2420 | shl eax, 0x18 // 488d8dc8000000 | inc ecx $sequence_1 = { 4c8b8db0010000 8d48ff 4869c184000000 4c8d45c0 895c2420 4c03c0 } // n = 6, score = 100 // 4c8b8db0010000 | dec eax // 8d48ff | mov eax, dword ptr [esp + 0x28] // 4869c184000000 | add ecx, eax // 4c8d45c0 | inc ebx // 895c2420 | mov dword ptr [esi], ecx // 4c03c0 | cmp edx, eax $sequence_2 = { 8d6fcf 3beb 7635 488d742432 4c8b842408010000 488d8c24f8000000 } // n = 6, score = 100 // 8d6fcf | inc ecx // 3beb | mov edx, 1 // 7635 | inc esp // 488d742432 | mov dword ptr [ebp + 0x44], eax // 4c8b842408010000 | mov eax, edx // 488d8c24f8000000 | mov dword ptr [ebp + 0x40], edx $sequence_3 = { 488bf3 48c1fe06 4c8d2d36050100 83e03f 4c8d24c0 498b44f500 42f644e03801 } // n = 7, score = 100 // 488bf3 | xor ecx, ecx // 48c1fe06 | inc ebp // 4c8d2d36050100 | mov eax, edi // 83e03f | mov edx, 0x40000000 // 4c8d24c0 | dec ecx // 498b44f500 | mov ecx, esp // 42f644e03801 | mov dword ptr [esp + 0x28], 0x80 $sequence_4 = { 4c8d059f1c0100 488d15a01c0100 e8???????? 4885c0 740f 488bcb 4883c420 } // n = 7, score = 100 // 4c8d059f1c0100 | add ebx, 4 // 488d15a01c0100 | shl ecx, 4 // e8???????? | // 4885c0 | or esi, eax // 740f | inc esp // 488bcb | movzx esi, byte ptr [edx] // 4883c420 | dec ecx $sequence_5 = { 4533db 498bd3 4c8d0587c9feff 4b8b8ce000430200 4803ca } // n = 5, score = 100 // 4533db | jg 0x763 // 498bd3 | inc ebp // 4c8d0587c9feff | xor ecx, ecx // 4b8b8ce000430200 | ret // 4803ca | dec eax $sequence_6 = { b801040000 eb44 488d442430 895c2428 458d4a01 4889442420 4c8d45c0 } // n = 7, score = 100 // b801040000 | mov dword ptr [ebp + 0x44], eax // eb44 | jmp 0x1a88 // 488d442430 | mov dword ptr [ebp + 0x40], esi // 895c2428 | inc esp // 458d4a01 | mov dword ptr [ebp + 0x44], esi // 4889442420 | dec eax // 4c8d45c0 | mov edx, ebx $sequence_7 = { 85ff 0f84df020000 448baba0000000 428d04fd00000000 4a8d1400 488945f0 0fb632 } // n = 7, score = 100 // 85ff | inc esp // 0f84df020000 | add eax, eax // 448baba0000000 | inc ecx // 428d04fd00000000 | rol eax, 0x10 // 4a8d1400 | inc ecx // 488945f0 | xor eax, edx // 0fb632 | add eax, dword ptr [ebp - 0x40] $sequence_8 = { 23c2 448bda 0bc8 41f7d3 034de4 418bc0 4403d1 } // n = 7, score = 100 // 23c2 | lea eax, [esp + 0x44] // 448bda | mov edx, dword ptr [esp + 0x40] // 0bc8 | dec eax // 41f7d3 | mov eax, dword ptr [esp + 0x40] // 034de4 | dec eax // 418bc0 | cmp ecx, 0x6400000 // 4403d1 | jbe 0xc57 $sequence_9 = { 488d3dc1640100 488b0c3b 4885c9 740a e8???????? 4883243b00 4883c308 } // n = 7, score = 100 // 488d3dc1640100 | inc ecx // 488b0c3b | cmp esp, 0x20 // 4885c9 | jae 0x3f6 // 740a | inc ebp // e8???????? | // 4883243b00 | xor edx, edx // 4883c308 | dec ebp condition: 7 of them and filesize < 339968 }
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