Actor(s): DragonOK, Samurai Panda
There is no description at this point.
rule win_isspace_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-03-29" version = "1" description = "Detects win.isspace." 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.isspace" malpedia_rule_date = "20230328" malpedia_hash = "9d2d75cef573c1c2d861f5197df8f563b05a305d" malpedia_version = "20230407" 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 = { 6a00 6a1c eb0a 6a00 } // n = 4, score = 200 // 6a00 | push 0 // 6a1c | push 0x1c // eb0a | jmp 0xc // 6a00 | push 0 $sequence_1 = { 6a03 6a02 ff15???????? 894604 } // n = 4, score = 200 // 6a03 | push 3 // 6a02 | push 2 // ff15???????? | // 894604 | mov dword ptr [esi + 4], eax $sequence_2 = { 6870170000 ff15???????? e9???????? 6a40 6a00 } // n = 5, score = 200 // 6870170000 | push 0x1770 // ff15???????? | // e9???????? | // 6a40 | push 0x40 // 6a00 | push 0 $sequence_3 = { c78548ffffff9c000000 e8???????? 8ad8 c745fc00000000 8d8548ffffff } // n = 5, score = 200 // c78548ffffff9c000000 | mov dword ptr [ebp - 0xb8], 0x9c // e8???????? | // 8ad8 | mov bl, al // c745fc00000000 | mov dword ptr [ebp - 4], 0 // 8d8548ffffff | lea eax, [ebp - 0xb8] $sequence_4 = { b898a30000 e8???????? a1???????? 3145f8 33c5 8945e4 53 } // n = 7, score = 200 // b898a30000 | mov eax, 0xa398 // e8???????? | // a1???????? | // 3145f8 | xor dword ptr [ebp - 8], eax // 33c5 | xor eax, ebp // 8945e4 | mov dword ptr [ebp - 0x1c], eax // 53 | push ebx $sequence_5 = { 6800200300 a3???????? e8???????? 6800200300 a3???????? } // n = 5, score = 200 // 6800200300 | push 0x32000 // a3???????? | // e8???????? | // 6800200300 | push 0x32000 // a3???????? | $sequence_6 = { 0570010000 50 56 ff15???????? 56 ff15???????? } // n = 6, score = 200 // 0570010000 | add eax, 0x170 // 50 | push eax // 56 | push esi // ff15???????? | // 56 | push esi // ff15???????? | $sequence_7 = { c3 6a00 6a2b 68???????? } // n = 4, score = 200 // c3 | ret // 6a00 | push 0 // 6a2b | push 0x2b // 68???????? | condition: 7 of them and filesize < 434176 }
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