Actor(s): Samurai Panda, Stone Panda
There is no description at this point.
rule win_poldat_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-05-16" version = "1" description = "Detects win.poldat." 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.poldat" 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 = { 8b4604 85c0 0f84f2000000 48 8b561c } // n = 5, score = 100 // 8b4604 | mov eax, dword ptr [esi + 4] // 85c0 | test eax, eax // 0f84f2000000 | je 0xf8 // 48 | dec eax // 8b561c | mov edx, dword ptr [esi + 0x1c] $sequence_1 = { 50 ff15???????? 8bf0 8b85acfdffff } // n = 4, score = 100 // 50 | push eax // ff15???????? | // 8bf0 | mov esi, eax // 8b85acfdffff | mov eax, dword ptr [ebp - 0x254] $sequence_2 = { 83c410 8906 8b4510 5e } // n = 4, score = 100 // 83c410 | add esp, 0x10 // 8906 | mov dword ptr [esi], eax // 8b4510 | mov eax, dword ptr [ebp + 0x10] // 5e | pop esi $sequence_3 = { 53 50 e8???????? 81c46c0c0000 8d85ecfdffff } // n = 5, score = 100 // 53 | push ebx // 50 | push eax // e8???????? | // 81c46c0c0000 | add esp, 0xc6c // 8d85ecfdffff | lea eax, [ebp - 0x214] $sequence_4 = { 85c0 0f8485030000 833e00 0f847c030000 8b542418 } // n = 5, score = 100 // 85c0 | test eax, eax // 0f8485030000 | je 0x38b // 833e00 | cmp dword ptr [esi], 0 // 0f847c030000 | je 0x382 // 8b542418 | mov edx, dword ptr [esp + 0x18] $sequence_5 = { 2bc3 8b0c9d68c34100 23ca 034e04 894c242c 8bcb d3ea } // n = 7, score = 100 // 2bc3 | sub eax, ebx // 8b0c9d68c34100 | mov ecx, dword ptr [ebx*4 + 0x41c368] // 23ca | and ecx, edx // 034e04 | add ecx, dword ptr [esi + 4] // 894c242c | mov dword ptr [esp + 0x2c], ecx // 8bcb | mov ecx, ebx // d3ea | shr edx, cl $sequence_6 = { e8???????? 8b7d08 8b5d0c 8d45fc 6a04 } // n = 5, score = 100 // e8???????? | // 8b7d08 | mov edi, dword ptr [ebp + 8] // 8b5d0c | mov ebx, dword ptr [ebp + 0xc] // 8d45fc | lea eax, [ebp - 4] // 6a04 | push 4 $sequence_7 = { 8d85ecfdffff 50 e8???????? 83c418 b800200300 } // n = 5, score = 100 // 8d85ecfdffff | lea eax, [ebp - 0x214] // 50 | push eax // e8???????? | // 83c418 | add esp, 0x18 // b800200300 | mov eax, 0x32000 $sequence_8 = { c645d12e c645d230 c645d32e c645d431 c645d520 c645d62d } // n = 6, score = 100 // c645d12e | mov byte ptr [ebp - 0x2f], 0x2e // c645d230 | mov byte ptr [ebp - 0x2e], 0x30 // c645d32e | mov byte ptr [ebp - 0x2d], 0x2e // c645d431 | mov byte ptr [ebp - 0x2c], 0x31 // c645d520 | mov byte ptr [ebp - 0x2b], 0x20 // c645d62d | mov byte ptr [ebp - 0x2a], 0x2d $sequence_9 = { e8???????? 83c420 8d85a4fbffff 50 8d859cf9ffff } // n = 5, score = 100 // e8???????? | // 83c420 | add esp, 0x20 // 8d85a4fbffff | lea eax, [ebp - 0x45c] // 50 | push eax // 8d859cf9ffff | lea eax, [ebp - 0x664] condition: 7 of them and filesize < 247808 }
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