There is no description at this point.
rule win_batel_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.batel." 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.batel" malpedia_rule_date = "20230705" malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41" malpedia_version = "20230715" 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 = { 33c0 5b c21000 3b0d???????? 7502 f3c3 e9???????? } // n = 7, score = 200 // 33c0 | xor eax, eax // 5b | pop ebx // c21000 | ret 0x10 // 3b0d???????? | // 7502 | jne 4 // f3c3 | ret // e9???????? | $sequence_1 = { 85c0 7419 ffd0 56 ffd3 68404c5827 ff15???????? } // n = 7, score = 100 // 85c0 | test eax, eax // 7419 | je 0x1b // ffd0 | call eax // 56 | push esi // ffd3 | call ebx // 68404c5827 | push 0x27584c40 // ff15???????? | $sequence_2 = { 6800002300 e8???????? 83c408 85c0 743a } // n = 5, score = 100 // 6800002300 | push 0x230000 // e8???????? | // 83c408 | add esp, 8 // 85c0 | test eax, eax // 743a | je 0x3c $sequence_3 = { 33c0 eb35 a1???????? 81b80000230050450000 75eb b90b010000 66398818002300 } // n = 7, score = 100 // 33c0 | xor eax, eax // eb35 | jmp 0x37 // a1???????? | // 81b80000230050450000 | cmp dword ptr [eax + 0x230000], 0x4550 // 75eb | jne 0xffffffed // b90b010000 | mov ecx, 0x10b // 66398818002300 | cmp word ptr [eax + 0x230018], cx $sequence_4 = { 55 8bec 81eca0020000 68ee020000 ff15???????? 689d020000 } // n = 6, score = 100 // 55 | push ebp // 8bec | mov ebp, esp // 81eca0020000 | sub esp, 0x2a0 // 68ee020000 | push 0x2ee // ff15???????? | // 689d020000 | push 0x29d $sequence_5 = { 56 ff15???????? 85c0 7419 ffd0 } // n = 5, score = 100 // 56 | push esi // ff15???????? | // 85c0 | test eax, eax // 7419 | je 0x1b // ffd0 | call eax $sequence_6 = { e8???????? 83c40c 33c9 b8???????? 8a10 } // n = 5, score = 100 // e8???????? | // 83c40c | add esp, 0xc // 33c9 | xor ecx, ecx // b8???????? | // 8a10 | mov dl, byte ptr [eax] $sequence_7 = { b9a7000000 8db560fdffff f3a5 66a5 ffd0 5f 5e } // n = 7, score = 100 // b9a7000000 | mov ecx, 0xa7 // 8db560fdffff | lea esi, [ebp - 0x2a0] // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // 66a5 | movsw word ptr es:[edi], word ptr [esi] // ffd0 | call eax // 5f | pop edi // 5e | pop esi $sequence_8 = { 33c0 40 c20c00 55 8bec 81eca0020000 } // n = 6, score = 100 // 33c0 | xor eax, eax // 40 | inc eax // c20c00 | ret 0xc // 55 | push ebp // 8bec | mov ebp, esp // 81eca0020000 | sub esp, 0x2a0 $sequence_9 = { 53 55 8b2d???????? 56 57 68a00f0000 } // n = 6, score = 100 // 53 | push ebx // 55 | push ebp // 8b2d???????? | // 56 | push esi // 57 | push edi // 68a00f0000 | push 0xfa0 $sequence_10 = { 68e0202300 ff15???????? 8bf0 85f6 7429 68f4202300 56 } // n = 7, score = 100 // 68e0202300 | push 0x2320e0 // ff15???????? | // 8bf0 | mov esi, eax // 85f6 | test esi, esi // 7429 | je 0x2b // 68f4202300 | push 0x2320f4 // 56 | push esi $sequence_11 = { ff15???????? 689d020000 8d8561fdffff 6a00 50 c68560fdffff00 e8???????? } // n = 7, score = 100 // ff15???????? | // 689d020000 | push 0x29d // 8d8561fdffff | lea eax, [ebp - 0x29f] // 6a00 | push 0 // 50 | push eax // c68560fdffff00 | mov byte ptr [ebp - 0x2a0], 0 // e8???????? | $sequence_12 = { 41 3d???????? 7cec 56 57 6a40 } // n = 6, score = 100 // 41 | inc ecx // 3d???????? | // 7cec | jl 0xffffffee // 56 | push esi // 57 | push edi // 6a40 | push 0x40 $sequence_13 = { b8???????? 8a10 88940d60fdffff 83c003 41 3d???????? 7cec } // n = 7, score = 100 // b8???????? | // 8a10 | mov dl, byte ptr [eax] // 88940d60fdffff | mov byte ptr [ebp + ecx - 0x2a0], dl // 83c003 | add eax, 3 // 41 | inc ecx // 3d???????? | // 7cec | jl 0xffffffee $sequence_14 = { 6a14 6888212300 e8???????? ff35???????? } // n = 4, score = 100 // 6a14 | push 0x14 // 6888212300 | push 0x232188 // e8???????? | // ff35???????? | $sequence_15 = { 47 83ff5a 7ccd 5f 5e 5d } // n = 6, score = 100 // 47 | inc edi // 83ff5a | cmp edi, 0x5a // 7ccd | jl 0xffffffcf // 5f | pop edi // 5e | pop esi // 5d | pop ebp $sequence_16 = { 57 68a00f0000 ffd5 8b1d???????? bf01000000 8d642400 } // n = 6, score = 100 // 57 | push edi // 68a00f0000 | push 0xfa0 // ffd5 | call ebp // 8b1d???????? | // bf01000000 | mov edi, 1 // 8d642400 | lea esp, [esp] $sequence_17 = { 6a40 6800100000 689e020000 6a00 ff15???????? } // n = 5, score = 100 // 6a40 | push 0x40 // 6800100000 | push 0x1000 // 689e020000 | push 0x29e // 6a00 | push 0 // ff15???????? | $sequence_18 = { 7412 ffd0 56 ffd3 68005c2605 ffd5 } // n = 6, score = 100 // 7412 | je 0x14 // ffd0 | call eax // 56 | push esi // ffd3 | call ebx // 68005c2605 | push 0x5265c00 // ffd5 | call ebp $sequence_19 = { ffd3 68005c2605 ffd5 47 83ff5a 7ccd } // n = 6, score = 100 // ffd3 | call ebx // 68005c2605 | push 0x5265c00 // ffd5 | call ebp // 47 | inc edi // 83ff5a | cmp edi, 0x5a // 7ccd | jl 0xffffffcf $sequence_20 = { 8b1d???????? bf01000000 8d642400 68???????? ff15???????? 8bf0 85f6 } // n = 7, score = 100 // 8b1d???????? | // bf01000000 | mov edi, 1 // 8d642400 | lea esp, [esp] // 68???????? | // ff15???????? | // 8bf0 | mov esi, eax // 85f6 | test esi, esi $sequence_21 = { 6a00 ff15???????? 68d8202300 ff15???????? } // n = 4, score = 100 // 6a00 | push 0 // ff15???????? | // 68d8202300 | push 0x2320d8 // ff15???????? | condition: 7 of them and filesize < 49152 }
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