A ransomware that emerged in April 2022.
rule win_industrial_spy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" 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 = "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 = { 2bf3 7421 8bc3 488d142b 4c2bc0 8bce } // n = 6, score = 100 // 2bf3 | dec eax // 7421 | mov ebx, eax // 8bc3 | test eax, eax // 488d142b | je 0x19af // 4c2bc0 | dec esp // 8bce | lea eax, [ebp + 0x1c0] $sequence_1 = { 451bd2 4423d2 4c2bc6 79d7 488b9c2440020000 4881c400020000 } // n = 6, score = 100 // 451bd2 | cmp edi, 0x400 // 4423d2 | ja 0x9b8 // 4c2bc6 | dec esp // 79d7 | mov esp, esi // 488b9c2440020000 | dec esp // 4881c400020000 | mov dword ptr [ebp - 0x51], ebp $sequence_2 = { 488d15771a0200 448bcb bb01000000 448bc3 ff15???????? 488364243000 488d0de1c90100 } // n = 7, score = 100 // 488d15771a0200 | dec eax // 448bcb | sub esp, 0x20 // bb01000000 | dec eax // 448bc3 | lea ebx, [0x1b42b] // ff15???????? | // 488364243000 | pop edi // 488d0de1c90100 | ret $sequence_3 = { 4883ec20 8bd9 4c8d0d491c0100 b902000000 4c8d05351c0100 } // n = 5, score = 100 // 4883ec20 | dec eax // 8bd9 | lea ecx, [ebp + 0xe0] // 4c8d0d491c0100 | inc ecx // b902000000 | mov ecx, 0x80 // 4c8d05351c0100 | dec esp $sequence_4 = { 4c8d1ddfefffff 488be9 4533d2 470fb68c1a50ff0100 } // n = 4, score = 100 // 4c8d1ddfefffff | mov dword ptr [esp + 0x20], ebx // 488be9 | dec esp // 4533d2 | lea ecx, [esp + 0x918] // 470fb68c1a50ff0100 | inc ecx $sequence_5 = { e8???????? 488b9550010000 488d4df0 458bce 4a8d1cb500000000 } // n = 5, score = 100 // e8???????? | // 488b9550010000 | dec esp // 488d4df0 | mov esi, ecx // 458bce | dec eax // 4a8d1cb500000000 | sub esp, 0x90 $sequence_6 = { c784242401000065006700 c78424280100002e007200 c784242c01000067007300 c78424300100002e007300 c784243401000063007200 c78424380100002e007300 c784243c01000063007400 } // n = 7, score = 100 // c784242401000065006700 | inc ecx // c78424280100002e007200 | or eax, eax // c784242c01000067007300 | add eax, dword ptr [ebp - 0x34] // c78424300100002e007300 | add edx, eax // c784243401000063007200 | inc ecx // c78424380100002e007300 | mov eax, edx // c784243c01000063007400 | not eax $sequence_7 = { 412bd8 03c1 894714 3bf3 } // n = 4, score = 100 // 412bd8 | test eax, eax // 03c1 | xor edx, edx // 894714 | dec ecx // 3bf3 | mov edi, eax $sequence_8 = { 85f6 488d8f00010000 448bc6 480f45eb 488bd5 e8???????? 488b5c2430 } // n = 7, score = 100 // 85f6 | mov dword ptr [esp + 0x168], 0x620076 // 488d8f00010000 | mov dword ptr [esp + 0x16c], 0x2e0073 // 448bc6 | mov dword ptr [esp + 0x15c], 0x2e0062 // 480f45eb | mov dword ptr [esp + 0x160], 0x620076 // 488bd5 | mov dword ptr [esp + 0x164], 0x2e0065 // e8???????? | // 488b5c2430 | mov dword ptr [esp + 0x168], 0x620076 $sequence_9 = { 41b801010000 e8???????? 418bc6 4d8d4d10 4c8d3d40470100 41be04000000 } // n = 6, score = 100 // 41b801010000 | xorps xmm0, xmm0 // e8???????? | // 418bc6 | movups xmmword ptr [esp + 0x1e8], xmm0 // 4d8d4d10 | dec eax // 4c8d3d40470100 | lea edx, [esp + 0x928] // 41be04000000 | dec eax condition: 7 of them and filesize < 339968 }
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