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 = "2023-01-25" 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 = "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 = { 83c404 8bc6 5e c20400 80790800 c701???????? 740e } // n = 7, score = 1000 // 83c404 | add esp, 4 // 8bc6 | mov eax, esi // 5e | pop esi // c20400 | ret 4 // 80790800 | cmp byte ptr [ecx + 8], 0 // c701???????? | // 740e | je 0x10 $sequence_1 = { 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_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 = { e8???????? 83c40c 803d????????37 7518 } // n = 4, score = 900 // e8???????? | // 83c40c | add esp, 0xc // 803d????????37 | // 7518 | jne 0x1a $sequence_4 = { 83e906 51 83c006 50 6a02 } // n = 5, score = 900 // 83e906 | sub ecx, 6 // 51 | push ecx // 83c006 | add eax, 6 // 50 | push eax // 6a02 | push 2 $sequence_5 = { 6800000040 8d4500 50 ff15???????? } // n = 4, score = 900 // 6800000040 | push 0x40000000 // 8d4500 | lea eax, [ebp] // 50 | push eax // ff15???????? | $sequence_6 = { 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_7 = { 8b4654 50 8b08 ff5138 47 83ff14 } // n = 6, score = 800 // 8b4654 | mov eax, dword ptr [esi + 0x54] // 50 | push eax // 8b08 | mov ecx, dword ptr [eax] // ff5138 | call dword ptr [ecx + 0x38] // 47 | inc edi // 83ff14 | cmp edi, 0x14 $sequence_8 = { 49 75f9 b8???????? b900000400 } // n = 4, score = 800 // 49 | dec ecx // 75f9 | jne 0xfffffffb // b8???????? | // b900000400 | mov ecx, 0x40000 $sequence_9 = { 52 8d5658 52 50 ff91d0000000 33ff } // n = 6, 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 $sequence_10 = { 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_11 = { e8???????? 68???????? 68???????? 68???????? 8d4500 } // n = 5, score = 800 // e8???????? | // 68???????? | // 68???????? | // 68???????? | // 8d4500 | lea eax, [ebp] $sequence_12 = { 681f000200 56 68???????? 6801000080 } // n = 4, score = 800 // 681f000200 | push 0x2001f // 56 | push esi // 68???????? | // 6801000080 | push 0x80000001 $sequence_13 = { ff25???????? ff25???????? 56 57 b8???????? } // n = 5, score = 800 // ff25???????? | // ff25???????? | // 56 | push esi // 57 | push edi // b8???????? | $sequence_14 = { 8b4654 8d9698000000 52 8d5678 8b08 } // n = 5, score = 800 // 8b4654 | mov eax, dword ptr [esi + 0x54] // 8d9698000000 | lea edx, [esi + 0x98] // 52 | push edx // 8d5678 | lea edx, [esi + 0x78] // 8b08 | mov ecx, dword ptr [eax] $sequence_15 = { 8d45ec 50 681f000200 53 } // n = 4, score = 800 // 8d45ec | lea eax, [ebp - 0x14] // 50 | push eax // 681f000200 | push 0x2001f // 53 | push ebx $sequence_16 = { 5d 51 c3 55 8bec 81ec28030000 a3???????? } // n = 7, score = 800 // 5d | pop ebp // 51 | push ecx // c3 | ret // 55 | push ebp // 8bec | mov ebp, esp // 81ec28030000 | sub esp, 0x328 // a3???????? | $sequence_17 = { 50 6802020000 ff15???????? 68???????? ff15???????? 8bf8 85ff } // n = 7, score = 800 // 50 | push eax // 6802020000 | push 0x202 // ff15???????? | // 68???????? | // ff15???????? | // 8bf8 | mov edi, eax // 85ff | test edi, edi $sequence_18 = { b900000400 c60000 40 49 } // n = 4, score = 800 // b900000400 | mov ecx, 0x40000 // c60000 | mov byte ptr [eax], 0 // 40 | inc eax // 49 | dec ecx $sequence_19 = { 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_20 = { 8975fc 6689b568ffffff 6882000000 56 8d856affffff } // n = 5, score = 700 // 8975fc | mov dword ptr [ebp - 4], esi // 6689b568ffffff | mov word ptr [ebp - 0x98], si // 6882000000 | push 0x82 // 56 | push esi // 8d856affffff | lea eax, [ebp - 0x96] $sequence_21 = { 8d7c2428 f3a5 c1e810 83e03f 83f83f 0fbed2 } // n = 6, score = 600 // 8d7c2428 | lea edi, [esp + 0x28] // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // c1e810 | shr eax, 0x10 // 83e03f | and eax, 0x3f // 83f83f | cmp eax, 0x3f // 0fbed2 | movsx edx, dl $sequence_22 = { 3bd1 0f8d33010000 2bca 33d2 85c9 } // n = 5, score = 600 // 3bd1 | cmp edx, ecx // 0f8d33010000 | jge 0x139 // 2bca | sub ecx, edx // 33d2 | xor edx, edx // 85c9 | test ecx, ecx $sequence_23 = { f3a5 a4 7706 8a440428 eb02 b03d 837c241002 } // n = 7, score = 600 // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // a4 | movsb byte ptr es:[edi], byte ptr [esi] // 7706 | ja 8 // 8a440428 | mov al, byte ptr [esp + eax + 0x28] // eb02 | jmp 4 // b03d | mov al, 0x3d // 837c241002 | cmp dword ptr [esp + 0x10], 2 $sequence_24 = { ff75ec ff15???????? 8b35???????? 6a04 } // n = 4, score = 400 // ff75ec | push dword ptr [ebp - 0x14] // ff15???????? | // 8b35???????? | // 6a04 | push 4 $sequence_25 = { 8bca 33c0 8dbd8efdffff 66899d8cfdffff f3ab } // n = 5, score = 200 // 8bca | mov ecx, edx // 33c0 | xor eax, eax // 8dbd8efdffff | lea edi, [ebp - 0x272] // 66899d8cfdffff | mov word ptr [ebp - 0x274], bx // f3ab | rep stosd dword ptr es:[edi], eax $sequence_26 = { ff15???????? 8365f800 8d4df8 51 50 89450c ff15???????? } // n = 7, score = 200 // ff15???????? | // 8365f800 | and dword ptr [ebp - 8], 0 // 8d4df8 | lea ecx, [ebp - 8] // 51 | push ecx // 50 | push eax // 89450c | mov dword ptr [ebp + 0xc], eax // ff15???????? | $sequence_27 = { c7458444000000 6a04 be00020000 f3ab 8b3d???????? } // n = 5, score = 200 // c7458444000000 | mov dword ptr [ebp - 0x7c], 0x44 // 6a04 | push 4 // be00020000 | mov esi, 0x200 // f3ab | rep stosd dword ptr es:[edi], eax // 8b3d???????? | $sequence_28 = { 56 ff742424 ffd7 53 56 } // n = 5, score = 200 // 56 | push esi // ff742424 | push dword ptr [esp + 0x24] // ffd7 | call edi // 53 | push ebx // 56 | push esi $sequence_29 = { 8b0c8d60630110 8d04c0 8d0481 8b4dfc } // n = 4, score = 200 // 8b0c8d60630110 | mov ecx, dword ptr [ecx*4 + 0x10016360] // 8d04c0 | lea eax, [eax + eax*8] // 8d0481 | lea eax, [ecx + eax*4] // 8b4dfc | mov ecx, dword ptr [ebp - 4] $sequence_30 = { 8365fc00 c745f0ef430010 8965f4 896df8 } // n = 4, score = 200 // 8365fc00 | and dword ptr [ebp - 4], 0 // c745f0ef430010 | mov dword ptr [ebp - 0x10], 0x100043ef // 8965f4 | mov dword ptr [ebp - 0xc], esp // 896df8 | mov dword ptr [ebp - 8], ebp condition: 7 of them and filesize < 1998848 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below.
Please propose all changes regarding references on the Malpedia library page
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY