Actor(s): Turla Group
There is no description at this point.
rule win_wipbot_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-05-16" version = "1" description = "Detects win.wipbot." 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.wipbot" malpedia_rule_date = "20220513" malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26" malpedia_version = "20220516" 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 = { b88a758b1f e8???????? 85c0 7428 8d55ec 8954240c 8d55f0 } // n = 7, score = 100 // b88a758b1f | mov eax, 0x1f8b758a // e8???????? | // 85c0 | test eax, eax // 7428 | je 0x2a // 8d55ec | lea edx, [ebp - 0x14] // 8954240c | mov dword ptr [esp + 0xc], edx // 8d55f0 | lea edx, [ebp - 0x10] $sequence_1 = { 8906 48 8d4328 48 8d5674 } // n = 5, score = 100 // 8906 | mov dword ptr [esi], eax // 48 | dec eax // 8d4328 | lea eax, [ebx + 0x28] // 48 | dec eax // 8d5674 | lea edx, [esi + 0x74] $sequence_2 = { 75f3 30c0 eb0b 41 8a1404 88540658 48 } // n = 7, score = 100 // 75f3 | jne 0xfffffff5 // 30c0 | xor al, al // eb0b | jmp 0xd // 41 | inc ecx // 8a1404 | mov dl, byte ptr [esp + eax] // 88540658 | mov byte ptr [esi + eax + 0x58], dl // 48 | dec eax $sequence_3 = { 8954240c 8d55f0 89542408 c744240400000000 c7042400000000 ffd0 } // n = 6, score = 100 // 8954240c | mov dword ptr [esp + 0xc], edx // 8d55f0 | lea edx, [ebp - 0x10] // 89542408 | mov dword ptr [esp + 8], edx // c744240400000000 | mov dword ptr [esp + 4], 0 // c7042400000000 | mov dword ptr [esp], 0 // ffd0 | call eax $sequence_4 = { c68424960000001e 48 8d44245c 88d1 48 01d0 48 } // n = 7, score = 100 // c68424960000001e | mov byte ptr [esp + 0x96], 0x1e // 48 | dec eax // 8d44245c | lea eax, [esp + 0x5c] // 88d1 | mov cl, dl // 48 | dec eax // 01d0 | add eax, edx // 48 | dec eax $sequence_5 = { 53 83ec3c 8945d4 b8de3e4b5a 8955d0 ba6cf4af8f 894dcc } // n = 7, score = 100 // 53 | push ebx // 83ec3c | sub esp, 0x3c // 8945d4 | mov dword ptr [ebp - 0x2c], eax // b8de3e4b5a | mov eax, 0x5a4b3ede // 8955d0 | mov dword ptr [ebp - 0x30], edx // ba6cf4af8f | mov edx, 0x8faff46c // 894dcc | mov dword ptr [ebp - 0x34], ecx $sequence_6 = { 85c9 48 89cf 0f847f010000 48 8d4c2430 e8???????? } // n = 7, score = 100 // 85c9 | test ecx, ecx // 48 | dec eax // 89cf | mov edi, ecx // 0f847f010000 | je 0x185 // 48 | dec eax // 8d4c2430 | lea ecx, [esp + 0x30] // e8???????? | $sequence_7 = { 8a140f 42 881408 49 ffc1 } // n = 5, score = 100 // 8a140f | mov dl, byte ptr [edi + ecx] // 42 | inc edx // 881408 | mov byte ptr [eax + ecx], dl // 49 | dec ecx // ffc1 | inc ecx $sequence_8 = { 48 8b5c2440 31c0 48 8d4e58 4c 8d6b58 } // n = 7, score = 100 // 48 | dec eax // 8b5c2440 | mov ebx, dword ptr [esp + 0x40] // 31c0 | xor eax, eax // 48 | dec eax // 8d4e58 | lea ecx, [esi + 0x58] // 4c | dec esp // 8d6b58 | lea ebp, [ebx + 0x58] $sequence_9 = { 53 89cb e8???????? 85c0 7525 8b0b bf711427cb } // n = 7, score = 100 // 53 | push ebx // 89cb | mov ebx, ecx // e8???????? | // 85c0 | test eax, eax // 7525 | jne 0x27 // 8b0b | mov ecx, dword ptr [ebx] // bf711427cb | mov edi, 0xcb271471 condition: 7 of them and filesize < 253952 }
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