There is no description at this point.
rule win_zeus_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2020-12-22" version = "1" description = "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.zeus" malpedia_rule_date = "20201222" malpedia_hash = "30354d830a29f0fbd3714d93d94dea941d77a130" malpedia_version = "20201023" 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 = { eb58 833f00 7651 8b5f08 } // n = 4, score = 700 // eb58 | jmp 0x5a // 833f00 | cmp dword ptr [edi], 0 // 7651 | jbe 0x53 // 8b5f08 | mov ebx, dword ptr [edi + 8] $sequence_1 = { 50 e8???????? 8d4dac 8d554c } // n = 4, score = 600 // 50 | push eax // e8???????? | // 8d4dac | lea ecx, [ebp - 0x54] // 8d554c | lea edx, [ebp + 0x4c] $sequence_2 = { 8b06 e8???????? 832600 33c0 ebee 56 } // n = 6, score = 600 // 8b06 | mov eax, dword ptr [esi] // e8???????? | // 832600 | and dword ptr [esi], 0 // 33c0 | xor eax, eax // ebee | jmp 0xfffffff0 // 56 | push esi $sequence_3 = { 8911 8b4d0c 8901 8b442418 894608 } // n = 5, score = 600 // 8911 | mov dword ptr [ecx], edx // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] // 8901 | mov dword ptr [ecx], eax // 8b442418 | mov eax, dword ptr [esp + 0x18] // 894608 | mov dword ptr [esi + 8], eax $sequence_4 = { 50 68???????? 8d85a4fdffff 50 ff15???????? 837d7411 } // n = 6, score = 600 // 50 | push eax // 68???????? | // 8d85a4fdffff | lea eax, [ebp - 0x25c] // 50 | push eax // ff15???????? | // 837d7411 | cmp dword ptr [ebp + 0x74], 0x11 $sequence_5 = { 5e 8bc3 5b c20400 5f 5e } // n = 6, score = 600 // 5e | pop esi // 8bc3 | mov eax, ebx // 5b | pop ebx // c20400 | ret 4 // 5f | pop edi // 5e | pop esi $sequence_6 = { ff75f4 ff30 ff15???????? 85c0 7515 } // n = 5, score = 600 // ff75f4 | push dword ptr [ebp - 0xc] // ff30 | push dword ptr [eax] // ff15???????? | // 85c0 | test eax, eax // 7515 | jne 0x17 $sequence_7 = { 33db e8???????? 57 8bf0 } // n = 4, score = 600 // 33db | xor ebx, ebx // e8???????? | // 57 | push edi // 8bf0 | mov esi, eax $sequence_8 = { 891d???????? 891d???????? ffd6 68???????? } // n = 4, score = 500 // 891d???????? | // 891d???????? | // ffd6 | call esi // 68???????? | $sequence_9 = { e8???????? 84c0 7442 6a10 } // n = 4, score = 500 // e8???????? | // 84c0 | test al, al // 7442 | je 0x44 // 6a10 | push 0x10 $sequence_10 = { 8bf3 6810270000 ff35???????? ff15???????? } // n = 4, score = 500 // 8bf3 | mov esi, ebx // 6810270000 | push 0x2710 // ff35???????? | // ff15???????? | $sequence_11 = { 8d8db0fdffff e8???????? 8ad8 84db } // n = 4, score = 400 // 8d8db0fdffff | lea ecx, [ebp - 0x250] // e8???????? | // 8ad8 | mov bl, al // 84db | test bl, bl $sequence_12 = { ff15???????? 5e 8ac3 5b c20800 55 8bec } // n = 7, score = 300 // ff15???????? | // 5e | pop esi // 8ac3 | mov al, bl // 5b | pop ebx // c20800 | ret 8 // 55 | push ebp // 8bec | mov ebp, esp $sequence_13 = { c20400 55 8bec f6451802 } // n = 4, score = 300 // c20400 | ret 4 // 55 | push ebp // 8bec | mov ebp, esp // f6451802 | test byte ptr [ebp + 0x18], 2 $sequence_14 = { c707000e0000 c7470809080002 e8???????? 83674200 6a78 } // n = 5, score = 200 // c707000e0000 | mov dword ptr [edi], 0xe00 // c7470809080002 | mov dword ptr [edi + 8], 0x2000809 // e8???????? | // 83674200 | and dword ptr [edi + 0x42], 0 // 6a78 | push 0x78 $sequence_15 = { 740c 81fb45415356 0f85b2000000 b365 6a15 8d742418 58 } // n = 7, score = 200 // 740c | je 0xe // 81fb45415356 | cmp ebx, 0x56534145 // 0f85b2000000 | jne 0xb8 // b365 | mov bl, 0x65 // 6a15 | push 0x15 // 8d742418 | lea esi, [esp + 0x18] // 58 | pop eax $sequence_16 = { 0f873d020000 83fe06 0f86e3000000 8b03 3509080002 3d5c5b4550 } // n = 6, score = 200 // 0f873d020000 | ja 0x243 // 83fe06 | cmp esi, 6 // 0f86e3000000 | jbe 0xe9 // 8b03 | mov eax, dword ptr [ebx] // 3509080002 | xor eax, 0x2000809 // 3d5c5b4550 | cmp eax, 0x50455b5c $sequence_17 = { 8b1b 81f309080002 81fb5d515047 7410 81fb4f4d4156 7408 81fb59495354 } // n = 7, score = 200 // 8b1b | mov ebx, dword ptr [ebx] // 81f309080002 | xor ebx, 0x2000809 // 81fb5d515047 | cmp ebx, 0x4750515d // 7410 | je 0x12 // 81fb4f4d4156 | cmp ebx, 0x56414d4f // 7408 | je 0xa // 81fb59495354 | cmp ebx, 0x54534959 $sequence_18 = { 7506 b364 6a14 eb18 81fb5a5c4156 740c 81fb45415356 } // n = 7, score = 200 // 7506 | jne 8 // b364 | mov bl, 0x64 // 6a14 | push 0x14 // eb18 | jmp 0x1a // 81fb5a5c4156 | cmp ebx, 0x56415c5a // 740c | je 0xe // 81fb45415356 | cmp ebx, 0x56534145 $sequence_19 = { b9???????? 56 57 33f6 56 50 } // n = 6, score = 200 // b9???????? | // 56 | push esi // 57 | push edi // 33f6 | xor esi, esi // 56 | push esi // 50 | push eax $sequence_20 = { 3d59495351 0f85ca000000 807b0420 0f85c0000000 } // n = 4, score = 200 // 3d59495351 | cmp eax, 0x51534959 // 0f85ca000000 | jne 0xd0 // 807b0420 | cmp byte ptr [ebx + 4], 0x20 // 0f85c0000000 | jne 0xc6 $sequence_21 = { 57 8d75f4 e8???????? 84c0 0f84ac000000 b809080002 } // n = 6, score = 200 // 57 | push edi // 8d75f4 | lea esi, [ebp - 0xc] // e8???????? | // 84c0 | test al, al // 0f84ac000000 | je 0xb2 // b809080002 | mov eax, 0x2000809 $sequence_22 = { 6809080002 8bc6 50 8d45fc 50 } // n = 5, score = 200 // 6809080002 | push 0x2000809 // 8bc6 | mov eax, esi // 50 | push eax // 8d45fc | lea eax, [ebp - 4] // 50 | push eax condition: 7 of them and filesize < 319488 }
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