Actor(s): Calypso group
There is no description at this point.
rule win_flying_dutchman_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.flying_dutchman." 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.flying_dutchman" 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 = { 50 8d8568feffff 50 ff15???????? 85c0 } // n = 5, score = 100 // 50 | push eax // 8d8568feffff | lea eax, [ebp - 0x198] // 50 | push eax // ff15???????? | // 85c0 | test eax, eax $sequence_1 = { 48 0f84f8000000 48 0f853d010000 83bd44fcffff06 7553 8b35???????? } // n = 7, score = 100 // 48 | dec eax // 0f84f8000000 | je 0xfe // 48 | dec eax // 0f853d010000 | jne 0x143 // 83bd44fcffff06 | cmp dword ptr [ebp - 0x3bc], 6 // 7553 | jne 0x55 // 8b35???????? | $sequence_2 = { f7f1 40 8945f0 6bc0fd 01450c 837b1410 7204 } // n = 7, score = 100 // f7f1 | div ecx // 40 | inc eax // 8945f0 | mov dword ptr [ebp - 0x10], eax // 6bc0fd | imul eax, eax, -3 // 01450c | add dword ptr [ebp + 0xc], eax // 837b1410 | cmp dword ptr [ebx + 0x14], 0x10 // 7204 | jb 6 $sequence_3 = { 2503000080 7905 48 83c8fc 40 83f801 0f85d3000000 } // n = 7, score = 100 // 2503000080 | and eax, 0x80000003 // 7905 | jns 7 // 48 | dec eax // 83c8fc | or eax, 0xfffffffc // 40 | inc eax // 83f801 | cmp eax, 1 // 0f85d3000000 | jne 0xd9 $sequence_4 = { 8d85f4fffeff 53 50 899df0fffeff e8???????? 83c40c 53 } // n = 7, score = 100 // 8d85f4fffeff | lea eax, [ebp - 0x1000c] // 53 | push ebx // 50 | push eax // 899df0fffeff | mov dword ptr [ebp - 0x10010], ebx // e8???????? | // 83c40c | add esp, 0xc // 53 | push ebx $sequence_5 = { eb60 6a59 ffd7 85c0 7458 b8???????? 8d9690010000 } // n = 7, score = 100 // eb60 | jmp 0x62 // 6a59 | push 0x59 // ffd7 | call edi // 85c0 | test eax, eax // 7458 | je 0x5a // b8???????? | // 8d9690010000 | lea edx, [esi + 0x190] $sequence_6 = { 53 68d5af0000 ff750c e8???????? eb0a ff750c 8bc3 } // n = 7, score = 100 // 53 | push ebx // 68d5af0000 | push 0xafd5 // ff750c | push dword ptr [ebp + 0xc] // e8???????? | // eb0a | jmp 0xc // ff750c | push dword ptr [ebp + 0xc] // 8bc3 | mov eax, ebx $sequence_7 = { 3bc7 7411 8938 897804 897808 89780c 897810 } // n = 7, score = 100 // 3bc7 | cmp eax, edi // 7411 | je 0x13 // 8938 | mov dword ptr [eax], edi // 897804 | mov dword ptr [eax + 4], edi // 897808 | mov dword ptr [eax + 8], edi // 89780c | mov dword ptr [eax + 0xc], edi // 897810 | mov dword ptr [eax + 0x10], edi $sequence_8 = { 33f6 89852cffffff 395d08 0f8699000000 8d4702 898530ffffff } // n = 6, score = 100 // 33f6 | xor esi, esi // 89852cffffff | mov dword ptr [ebp - 0xd4], eax // 395d08 | cmp dword ptr [ebp + 8], ebx // 0f8699000000 | jbe 0x9f // 8d4702 | lea eax, [edi + 2] // 898530ffffff | mov dword ptr [ebp - 0xd0], eax $sequence_9 = { ff248d3e540010 52 53 e8???????? e9???????? 52 53 } // n = 7, score = 100 // ff248d3e540010 | jmp dword ptr [ecx*4 + 0x1000543e] // 52 | push edx // 53 | push ebx // e8???????? | // e9???????? | // 52 | push edx // 53 | push ebx condition: 7 of them and filesize < 276480 }
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