There is no description at this point.
rule win_rockloader_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.rockloader." 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.rockloader" 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 = { 48 7407 880e e9???????? 8d5701 e8???????? 8bd8 } // n = 7, score = 300 // 48 | dec eax // 7407 | je 9 // 880e | mov byte ptr [esi], cl // e9???????? | // 8d5701 | lea edx, [edi + 1] // e8???????? | // 8bd8 | mov ebx, eax $sequence_1 = { 85c0 75d4 eba2 8b85dcfeffff 5f c9 c20800 } // n = 7, score = 300 // 85c0 | test eax, eax // 75d4 | jne 0xffffffd6 // eba2 | jmp 0xffffffa4 // 8b85dcfeffff | mov eax, dword ptr [ebp - 0x124] // 5f | pop edi // c9 | leave // c20800 | ret 8 $sequence_2 = { e8???????? e9???????? 6a05 58 e8???????? 8bf8 85ff } // n = 7, score = 300 // e8???????? | // e9???????? | // 6a05 | push 5 // 58 | pop eax // e8???????? | // 8bf8 | mov edi, eax // 85ff | test edi, edi $sequence_3 = { eb02 ddd8 dd45e4 8b4d08 dc4dec 83650800 dec9 } // n = 7, score = 300 // eb02 | jmp 4 // ddd8 | fstp st(0) // dd45e4 | fld qword ptr [ebp - 0x1c] // 8b4d08 | mov ecx, dword ptr [ebp + 8] // dc4dec | fmul qword ptr [ebp - 0x14] // 83650800 | and dword ptr [ebp + 8], 0 // dec9 | fmulp st(1) $sequence_4 = { 80383a 75b7 40 e8???????? 50 } // n = 5, score = 300 // 80383a | cmp byte ptr [eax], 0x3a // 75b7 | jne 0xffffffb9 // 40 | inc eax // e8???????? | // 50 | push eax $sequence_5 = { 8bec 85f6 7423 8b4620 85c0 7407 50 } // n = 7, score = 300 // 8bec | mov ebp, esp // 85f6 | test esi, esi // 7423 | je 0x25 // 8b4620 | mov eax, dword ptr [esi + 0x20] // 85c0 | test eax, eax // 7407 | je 9 // 50 | push eax $sequence_6 = { e8???????? eb07 50 ff15???????? 8bd8 85db 7489 } // n = 7, score = 300 // e8???????? | // eb07 | jmp 9 // 50 | push eax // ff15???????? | // 8bd8 | mov ebx, eax // 85db | test ebx, ebx // 7489 | je 0xffffff8b $sequence_7 = { 8b7508 50 ff75fc 53 68???????? 68???????? } // n = 6, score = 300 // 8b7508 | mov esi, dword ptr [ebp + 8] // 50 | push eax // ff75fc | push dword ptr [ebp - 4] // 53 | push ebx // 68???????? | // 68???????? | $sequence_8 = { e8???????? 8b45fc 897d0c 8d7001 8a08 40 84c9 } // n = 7, score = 300 // e8???????? | // 8b45fc | mov eax, dword ptr [ebp - 4] // 897d0c | mov dword ptr [ebp + 0xc], edi // 8d7001 | lea esi, [eax + 1] // 8a08 | mov cl, byte ptr [eax] // 40 | inc eax // 84c9 | test cl, cl $sequence_9 = { 7435 e8???????? 8325????????00 8bf0 } // n = 4, score = 300 // 7435 | je 0x37 // e8???????? | // 8325????????00 | // 8bf0 | mov esi, eax condition: 7 of them and filesize < 98304 }
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