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 = "2026-05-04" 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 = "20260422" malpedia_hash = "a182e35da64e6d71cb55f125c4d4225196523f14" malpedia_version = "20260504" 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 = { 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_1 = { 5b 8b8d00030000 33cd e8???????? 81c504030000 } // n = 5, score = 1000 // 5b | pop ebx // 8b8d00030000 | mov ecx, dword ptr [ebp + 0x300] // 33cd | xor ecx, ebp // e8???????? | // 81c504030000 | add ebp, 0x304 $sequence_2 = { 5e c20400 80790800 c701???????? 740e 8b4904 85c9 } // n = 7, 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] // 85c9 | test ecx, ecx $sequence_3 = { e8???????? 83c404 8bc6 5e c20400 80790800 } // n = 6, score = 1000 // e8???????? | // 83c404 | add esp, 4 // 8bc6 | mov eax, esi // 5e | pop esi // c20400 | ret 4 // 80790800 | cmp byte ptr [ecx + 8], 0 $sequence_4 = { 64890d00000000 59 5f 5e 5b 8b8d00030000 } // n = 6, score = 1000 // 64890d00000000 | mov dword ptr fs:[0], ecx // 59 | pop ecx // 5f | pop edi // 5e | pop esi // 5b | pop ebx // 8b8d00030000 | mov ecx, dword ptr [ebp + 0x300] $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 = { 51 83c006 50 6a02 } // n = 4, score = 900 // 51 | push ecx // 83c006 | add eax, 6 // 50 | push eax // 6a02 | push 2 $sequence_7 = { 2bc8 83e906 51 83c006 } // n = 4, score = 900 // 2bc8 | sub ecx, eax // 83e906 | sub ecx, 6 // 51 | push ecx // 83c006 | add eax, 6 $sequence_8 = { e8???????? 83c40c 803d????????37 7518 68???????? } // n = 5, score = 900 // e8???????? | // 83c40c | add esp, 0xc // 803d????????37 | // 7518 | jne 0x1a // 68???????? | $sequence_9 = { 6800000040 8d4500 50 ff15???????? } // n = 4, score = 900 // 6800000040 | push 0x40000000 // 8d4500 | lea eax, [ebp] // 50 | push eax // ff15???????? | $sequence_10 = { 8b08 ff91a4000000 8b4654 6a01 50 } // n = 5, score = 800 // 8b08 | mov ecx, dword ptr [eax] // ff91a4000000 | call dword ptr [ecx + 0xa4] // 8b4654 | mov eax, dword ptr [esi + 0x54] // 6a01 | push 1 // 50 | push eax $sequence_11 = { 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_12 = { 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_13 = { 83ff14 7509 8b4654 50 } // n = 4, score = 800 // 83ff14 | cmp edi, 0x14 // 7509 | jne 0xb // 8b4654 | mov eax, dword ptr [esi + 0x54] // 50 | push eax $sequence_14 = { 740c 8b470c 83c604 833c0600 } // n = 4, score = 800 // 740c | je 0xe // 8b470c | mov eax, dword ptr [edi + 0xc] // 83c604 | add esi, 4 // 833c0600 | cmp dword ptr [esi + eax], 0 $sequence_15 = { 741d 6a00 68b80b0000 ffd3 } // n = 4, score = 800 // 741d | je 0x1f // 6a00 | push 0 // 68b80b0000 | push 0xbb8 // ffd3 | call ebx $sequence_16 = { 8bf1 e8???????? 8b4654 6a00 50 } // n = 5, score = 800 // 8bf1 | mov esi, ecx // e8???????? | // 8b4654 | mov eax, dword ptr [esi + 0x54] // 6a00 | push 0 // 50 | push eax $sequence_17 = { e8???????? 68???????? 68???????? 68???????? 8d4500 } // n = 5, score = 800 // e8???????? | // 68???????? | // 68???????? | // 68???????? | // 8d4500 | lea eax, [ebp] $sequence_18 = { 49 75f9 b8???????? b900000400 } // n = 4, score = 800 // 49 | dec ecx // 75f9 | jne 0xfffffffb // b8???????? | // b900000400 | mov ecx, 0x40000 $sequence_19 = { 681f000200 56 68???????? 6801000080 } // n = 4, score = 800 // 681f000200 | push 0x2001f // 56 | push esi // 68???????? | // 6801000080 | push 0x80000001 $sequence_20 = { eb06 8b3d???????? 8d45fc 50 } // n = 4, score = 600 // eb06 | jmp 8 // 8b3d???????? | // 8d45fc | lea eax, [ebp - 4] // 50 | push eax $sequence_21 = { 8d0c40 8d148500000000 89442414 894c2410 89542418 8b5500 } // n = 6, score = 600 // 8d0c40 | lea ecx, [eax + eax*2] // 8d148500000000 | lea edx, [eax*4] // 89442414 | mov dword ptr [esp + 0x14], eax // 894c2410 | mov dword ptr [esp + 0x10], ecx // 89542418 | mov dword ptr [esp + 0x18], edx // 8b5500 | mov edx, dword ptr [ebp] $sequence_22 = { ff75ec ff15???????? 8b35???????? 6a04 } // n = 4, score = 400 // ff75ec | push dword ptr [ebp - 0x14] // ff15???????? | // 8b35???????? | // 6a04 | push 4 $sequence_23 = { 8d85b8fcffff 89bdb8fcffff 50 ffd6 8d45e8 } // n = 5, score = 200 // 8d85b8fcffff | lea eax, [ebp - 0x348] // 89bdb8fcffff | mov dword ptr [ebp - 0x348], edi // 50 | push eax // ffd6 | call esi // 8d45e8 | lea eax, [ebp - 0x18] $sequence_24 = { ff15???????? 8d45a4 50 ffd6 8d55b4 } // n = 5, score = 200 // ff15???????? | // 8d45a4 | lea eax, [ebp - 0x5c] // 50 | push eax // ffd6 | call esi // 8d55b4 | lea edx, [ebp - 0x4c] $sequence_25 = { e8???????? 83c414 a3???????? ff35???????? 56 8b35???????? } // n = 6, score = 200 // e8???????? | // 83c414 | add esp, 0x14 // a3???????? | // ff35???????? | // 56 | push esi // 8b35???????? | $sequence_26 = { 0f85d1000000 807c19ff20 8d4419ff 7504 802000 4b 57 } // n = 7, score = 200 // 0f85d1000000 | jne 0xd7 // 807c19ff20 | cmp byte ptr [ecx + ebx - 1], 0x20 // 8d4419ff | lea eax, [ecx + ebx - 1] // 7504 | jne 6 // 802000 | and byte ptr [eax], 0 // 4b | dec ebx // 57 | push edi $sequence_27 = { 741b ff75f8 e8???????? 84c0 59 } // n = 5, score = 200 // 741b | je 0x1d // ff75f8 | push dword ptr [ebp - 8] // e8???????? | // 84c0 | test al, al // 59 | pop ecx $sequence_28 = { d1e1 51 50 ff75fc e8???????? 83c414 } // n = 6, score = 200 // d1e1 | shl ecx, 1 // 51 | push ecx // 50 | push eax // ff75fc | push dword ptr [ebp - 4] // e8???????? | // 83c414 | add esp, 0x14 condition: 7 of them and filesize < 1998848 }
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