Actor(s): Mirage
There is no description at this point.
rule win_tidepool_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2026-09-17" version = "1" description = "Detects win.tidepool." 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.tidepool" malpedia_rule_date = "20260916" malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6" malpedia_version = "20260917" 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 = { 5e c20400 80790800 c701???????? 740e 8b4904 } // n = 6, score = 1000 // 5e | pop esi // c20400 | ret 4 // 80790800 | cmp byte ptr [ecx + 8], 0 // c701???????? | // 740e | je 0x10 // 8b4904 | mov ecx, dword ptr [ecx + 4] $sequence_1 = { 56 e8???????? 83c404 8bc6 5e c20400 80790800 } // n = 7, score = 1000 // 56 | push esi // e8???????? | // 83c404 | add esp, 4 // 8bc6 | mov eax, esi // 5e | pop esi // c20400 | ret 4 // 80790800 | cmp byte ptr [ecx + 8], 0 $sequence_2 = { 5f 5e 5b 8b8d00030000 33cd e8???????? 81c504030000 } // n = 7, score = 1000 // 5f | pop edi // 5e | pop esi // 5b | pop ebx // 8b8d00030000 | mov ecx, dword ptr [ebp + 0x300] // 33cd | xor ecx, ebp // e8???????? | // 81c504030000 | add ebp, 0x304 $sequence_3 = { 6a00 50 8b08 ff91a4000000 } // n = 4, score = 1000 // 6a00 | push 0 // 50 | push eax // 8b08 | mov ecx, dword ptr [eax] // ff91a4000000 | call dword ptr [ecx + 0xa4] $sequence_4 = { e8???????? 83c40c 803d????????37 7518 68???????? } // n = 5, score = 900 // e8???????? | // 83c40c | add esp, 0xc // 803d????????37 | // 7518 | jne 0x1a // 68???????? | $sequence_5 = { 33db 53 6a02 8bf1 e8???????? } // n = 5, score = 900 // 33db | xor ebx, ebx // 53 | push ebx // 6a02 | push 2 // 8bf1 | mov esi, ecx // e8???????? | $sequence_6 = { 2bc8 83e906 51 83c006 50 } // n = 5, score = 900 // 2bc8 | sub ecx, eax // 83e906 | sub ecx, 6 // 51 | push ecx // 83c006 | add eax, 6 // 50 | push eax $sequence_7 = { 6800000040 8d4500 50 ff15???????? } // n = 4, score = 900 // 6800000040 | push 0x40000000 // 8d4500 | lea eax, [ebp] // 50 | push eax // ff15???????? | $sequence_8 = { 56 8bf1 e8???????? 8b4654 6a00 50 } // n = 6, score = 800 // 56 | push esi // 8bf1 | mov esi, ecx // e8???????? | // 8b4654 | mov eax, dword ptr [esi + 0x54] // 6a00 | push 0 // 50 | push eax $sequence_9 = { 681f000200 56 68???????? 6801000080 } // n = 4, score = 800 // 681f000200 | push 0x2001f // 56 | push esi // 68???????? | // 6801000080 | push 0x80000001 $sequence_10 = { 50 8b08 ff5138 47 } // n = 4, score = 800 // 50 | push eax // 8b08 | mov ecx, dword ptr [eax] // ff5138 | call dword ptr [ecx + 0x38] // 47 | inc edi $sequence_11 = { 57 50 6802020000 ff15???????? 68???????? ff15???????? } // n = 6, score = 800 // 57 | push edi // 50 | push eax // 6802020000 | push 0x202 // ff15???????? | // 68???????? | // ff15???????? | $sequence_12 = { 52 8d5668 52 8d5658 } // n = 4, score = 800 // 52 | push edx // 8d5668 | lea edx, [esi + 0x68] // 52 | push edx // 8d5658 | lea edx, [esi + 0x58] $sequence_13 = { e8???????? c3 68???????? e8???????? a1???????? c70424???????? ff35???????? } // n = 7, score = 800 // e8???????? | // c3 | ret // 68???????? | // e8???????? | // a1???????? | // c70424???????? | // ff35???????? | $sequence_14 = { 6810270000 ff15???????? 8b45ec 8b08 } // n = 4, score = 800 // 6810270000 | push 0x2710 // ff15???????? | // 8b45ec | mov eax, dword ptr [ebp - 0x14] // 8b08 | mov ecx, dword ptr [eax] $sequence_15 = { e8???????? 68???????? 68???????? 68???????? 8d4500 50 } // n = 6, score = 800 // e8???????? | // 68???????? | // 68???????? | // 68???????? | // 8d4500 | lea eax, [ebp] // 50 | push eax $sequence_16 = { 8b08 ff91a4000000 8b4654 6a01 } // n = 4, score = 800 // 8b08 | mov ecx, dword ptr [eax] // ff91a4000000 | call dword ptr [ecx + 0xa4] // 8b4654 | mov eax, dword ptr [esi + 0x54] // 6a01 | push 1 $sequence_17 = { 52 50 8b08 ff91f8000000 } // n = 4, score = 800 // 52 | push edx // 50 | push eax // 8b08 | mov ecx, dword ptr [eax] // ff91f8000000 | call dword ptr [ecx + 0xf8] $sequence_18 = { 8d45ec 50 681f000200 53 68???????? } // n = 5, score = 800 // 8d45ec | lea eax, [ebp - 0x14] // 50 | push eax // 681f000200 | push 0x2001f // 53 | push ebx // 68???????? | $sequence_19 = { 52 8d5658 52 50 ff91d0000000 33ff 8b4654 } // n = 7, score = 800 // 52 | push edx // 8d5658 | lea edx, [esi + 0x58] // 52 | push edx // 50 | push eax // ff91d0000000 | call dword ptr [ecx + 0xd0] // 33ff | xor edi, edi // 8b4654 | mov eax, dword ptr [esi + 0x54] $sequence_20 = { eb06 8b3d???????? 8d45fc 50 } // n = 4, score = 600 // eb06 | jmp 8 // 8b3d???????? | // 8d45fc | lea eax, [ebp - 4] // 50 | push eax $sequence_21 = { 53 55 33db 395c241c 56 } // n = 5, score = 600 // 53 | push ebx // 55 | push ebp // 33db | xor ebx, ebx // 395c241c | cmp dword ptr [esp + 0x1c], ebx // 56 | push esi $sequence_22 = { 7e13 51 8d542428 55 } // n = 4, score = 600 // 7e13 | jle 0x15 // 51 | push ecx // 8d542428 | lea edx, [esp + 0x28] // 55 | push ebp $sequence_23 = { ff75ec ff15???????? 8b35???????? 6a04 } // n = 4, score = 400 // ff75ec | push dword ptr [ebp - 0x14] // ff15???????? | // 8b35???????? | // 6a04 | push 4 $sequence_24 = { 5b c9 c3 8b442404 8b00 c0e804 } // n = 6, score = 200 // 5b | pop ebx // c9 | leave // c3 | ret // 8b442404 | mov eax, dword ptr [esp + 4] // 8b00 | mov eax, dword ptr [eax] // c0e804 | shr al, 4 $sequence_25 = { 8d85dcfdffff 50 56 e8???????? 83c418 5e } // n = 6, score = 200 // 8d85dcfdffff | lea eax, [ebp - 0x224] // 50 | push eax // 56 | push esi // e8???????? | // 83c418 | add esp, 0x18 // 5e | pop esi $sequence_26 = { 83e01f c1f905 56 57 8b348d60630110 8d1c8d60630110 8d3cc0 } // n = 7, score = 200 // 83e01f | and eax, 0x1f // c1f905 | sar ecx, 5 // 56 | push esi // 57 | push edi // 8b348d60630110 | mov esi, dword ptr [ecx*4 + 0x10016360] // 8d1c8d60630110 | lea ebx, [ecx*4 + 0x10016360] // 8d3cc0 | lea edi, [eax + eax*8] $sequence_27 = { ff15???????? 85c0 7421 8d45c8 50 8d4584 } // n = 6, score = 200 // ff15???????? | // 85c0 | test eax, eax // 7421 | je 0x23 // 8d45c8 | lea eax, [ebp - 0x38] // 50 | push eax // 8d4584 | lea eax, [ebp - 0x7c] $sequence_28 = { c0e104 0ac1 8806 a0???????? } // n = 4, score = 200 // c0e104 | shl cl, 4 // 0ac1 | or al, cl // 8806 | mov byte ptr [esi], al // a0???????? | $sequence_29 = { ff15???????? ebe8 5f 5e b001 } // n = 5, score = 200 // ff15???????? | // ebe8 | jmp 0xffffffea // 5f | pop edi // 5e | pop esi // b001 | mov al, 1 condition: 7 of them and filesize < 1998848 }
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