Actor(s): Emissary Panda, Hurricane Panda, Lazarus Group, Leviathan, Stone Panda
There is no description at this point.
rule win_ghost_rat_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2020-10-14" version = "1" description = "autogenerated rule brought to you by yara-signator" tool = "yara-signator v0.5.0" tool_config = "callsandjumps;datarefs;binvalue" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.ghost_rat" malpedia_rule_date = "20201014" malpedia_hash = "a7e3bd57eaf12bf3ea29a863c041091ba3af9ac9" malpedia_version = "20201014" 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 = { 8b400c 85c0 7505 a1???????? 50 8bce } // n = 6, score = 400 // 8b400c | mov eax, dword ptr [eax + 0xc] // 85c0 | test eax, eax // 7505 | jne 7 // a1???????? | // 50 | push eax // 8bce | mov ecx, esi $sequence_1 = { 57 8bd9 e8???????? 8b4d08 3bc8 } // n = 5, score = 400 // 57 | push edi // 8bd9 | mov ebx, ecx // e8???????? | // 8b4d08 | mov ecx, dword ptr [ebp + 8] // 3bc8 | cmp ecx, eax $sequence_2 = { 5d c20400 894df4 c745f800000000 df6df4 } // n = 5, score = 400 // 5d | pop ebp // c20400 | ret 4 // 894df4 | mov dword ptr [ebp - 0xc], ecx // c745f800000000 | mov dword ptr [ebp - 8], 0 // df6df4 | fild qword ptr [ebp - 0xc] $sequence_3 = { df6df4 83ec08 dc0d???????? dd1c24 } // n = 4, score = 400 // df6df4 | fild qword ptr [ebp - 0xc] // 83ec08 | sub esp, 8 // dc0d???????? | // dd1c24 | fstp qword ptr [esp] $sequence_4 = { 6a01 56 ff15???????? 5e c20800 } // n = 5, score = 400 // 6a01 | push 1 // 56 | push esi // ff15???????? | // 5e | pop esi // c20800 | ret 8 $sequence_5 = { 8b06 6aff 50 ff15???????? 8b0e 51 } // n = 6, score = 400 // 8b06 | mov eax, dword ptr [esi] // 6aff | push -1 // 50 | push eax // ff15???????? | // 8b0e | mov ecx, dword ptr [esi] // 51 | push ecx $sequence_6 = { 5b 83c410 c20800 6a05 } // n = 4, score = 300 // 5b | pop ebx // 83c410 | add esp, 0x10 // c20800 | ret 8 // 6a05 | push 5 $sequence_7 = { 52 8bcb e8???????? 8bcb e8???????? 84c0 } // n = 6, score = 300 // 52 | push edx // 8bcb | mov ecx, ebx // e8???????? | // 8bcb | mov ecx, ebx // e8???????? | // 84c0 | test al, al $sequence_8 = { 6a00 6a00 e8???????? 8b96549f0000 83c41c 89849614030000 8b86549f0000 } // n = 7, score = 300 // 6a00 | push 0 // 6a00 | push 0 // e8???????? | // 8b96549f0000 | mov edx, dword ptr [esi + 0x9f54] // 83c41c | add esp, 0x1c // 89849614030000 | mov dword ptr [esi + edx*4 + 0x314], eax // 8b86549f0000 | mov eax, dword ptr [esi + 0x9f54] $sequence_9 = { 46 750b 5f 5e 33c0 5b } // n = 6, score = 300 // 46 | inc esi // 750b | jne 0xd // 5f | pop edi // 5e | pop esi // 33c0 | xor eax, eax // 5b | pop ebx $sequence_10 = { 49 7509 5f 5e 5b 83c454 c20400 } // n = 7, score = 300 // 49 | dec ecx // 7509 | jne 0xb // 5f | pop edi // 5e | pop esi // 5b | pop ebx // 83c454 | add esp, 0x54 // c20400 | ret 4 $sequence_11 = { 6a00 c705????????20010000 e8???????? 8b35???????? 83c434 } // n = 5, score = 300 // 6a00 | push 0 // c705????????20010000 | // e8???????? | // 8b35???????? | // 83c434 | add esp, 0x34 $sequence_12 = { e8???????? 59 83c8ff e9???????? 8b45fc } // n = 5, score = 200 // e8???????? | // 59 | pop ecx // 83c8ff | or eax, 0xffffffff // e9???????? | // 8b45fc | mov eax, dword ptr [ebp - 4] $sequence_13 = { ff7508 ff15???????? 40 50 ff15???????? 59 } // n = 6, score = 200 // ff7508 | push dword ptr [ebp + 8] // ff15???????? | // 40 | inc eax // 50 | push eax // ff15???????? | // 59 | pop ecx $sequence_14 = { e9???????? 8d45dc 50 681f000200 } // n = 4, score = 200 // e9???????? | // 8d45dc | lea eax, [ebp - 0x24] // 50 | push eax // 681f000200 | push 0x2001f $sequence_15 = { 8b4608 8b7e20 8b36 813f6b006500 7406 813f4b004500 75e8 } // n = 7, score = 200 // 8b4608 | mov eax, dword ptr [esi + 8] // 8b7e20 | mov edi, dword ptr [esi + 0x20] // 8b36 | mov esi, dword ptr [esi] // 813f6b006500 | cmp dword ptr [edi], 0x65006b // 7406 | je 8 // 813f4b004500 | cmp dword ptr [edi], 0x45004b // 75e8 | jne 0xffffffea $sequence_16 = { 50 6800000080 ff15???????? 85c0 7407 32c0 e9???????? } // n = 7, score = 200 // 50 | push eax // 6800000080 | push 0x80000000 // ff15???????? | // 85c0 | test eax, eax // 7407 | je 9 // 32c0 | xor al, al // e9???????? | $sequence_17 = { 8dbd85feffff f3ab 66ab aa } // n = 4, score = 200 // 8dbd85feffff | lea edi, [ebp - 0x17b] // f3ab | rep stosd dword ptr es:[edi], eax // 66ab | stosw word ptr es:[edi], ax // aa | stosb byte ptr es:[edi], al $sequence_18 = { ff15???????? 85c0 7507 c745e401000000 834dfcff } // n = 5, score = 200 // ff15???????? | // 85c0 | test eax, eax // 7507 | jne 9 // c745e401000000 | mov dword ptr [ebp - 0x1c], 1 // 834dfcff | or dword ptr [ebp - 4], 0xffffffff $sequence_19 = { 83e9fc c7014c696272 83e9fc c70161727941 83e9fc } // n = 5, score = 200 // 83e9fc | sub ecx, -4 // c7014c696272 | mov dword ptr [ecx], 0x7262694c // 83e9fc | sub ecx, -4 // c70161727941 | mov dword ptr [ecx], 0x41797261 // 83e9fc | sub ecx, -4 $sequence_20 = { 8b4ddc 81c1f8000000 894dd8 8b55e4 8b4220 8945fc c745f800000000 } // n = 7, score = 100 // 8b4ddc | mov ecx, dword ptr [ebp - 0x24] // 81c1f8000000 | add ecx, 0xf8 // 894dd8 | mov dword ptr [ebp - 0x28], ecx // 8b55e4 | mov edx, dword ptr [ebp - 0x1c] // 8b4220 | mov eax, dword ptr [edx + 0x20] // 8945fc | mov dword ptr [ebp - 4], eax // c745f800000000 | mov dword ptr [ebp - 8], 0 $sequence_21 = { 8b4580 50 8b8d60ffffff 51 ff951cffffff } // n = 5, score = 100 // 8b4580 | mov eax, dword ptr [ebp - 0x80] // 50 | push eax // 8b8d60ffffff | mov ecx, dword ptr [ebp - 0xa0] // 51 | push ecx // ff951cffffff | call dword ptr [ebp - 0xe4] $sequence_22 = { 898570ffffff 8b8570ffffff 8138aabbccdd 7411 8b8d70ffffff } // n = 5, score = 100 // 898570ffffff | mov dword ptr [ebp - 0x90], eax // 8b8570ffffff | mov eax, dword ptr [ebp - 0x90] // 8138aabbccdd | cmp dword ptr [eax], 0xddccbbaa // 7411 | je 0x13 // 8b8d70ffffff | mov ecx, dword ptr [ebp - 0x90] $sequence_23 = { 03440a0c 50 8b4d0c ff511c } // n = 4, score = 100 // 03440a0c | add eax, dword ptr [edx + ecx + 0xc] // 50 | push eax // 8b4d0c | mov ecx, dword ptr [ebp + 0xc] // ff511c | call dword ptr [ecx + 0x1c] $sequence_24 = { 56 57 e8???????? e8???????? 58 } // n = 5, score = 100 // 56 | push esi // 57 | push edi // e8???????? | // e8???????? | // 58 | pop eax $sequence_25 = { 8b8d70ffffff 83c101 898d70ffffff ebe1 8b9570ffffff 2b952cffffff 8955d0 } // n = 7, score = 100 // 8b8d70ffffff | mov ecx, dword ptr [ebp - 0x90] // 83c101 | add ecx, 1 // 898d70ffffff | mov dword ptr [ebp - 0x90], ecx // ebe1 | jmp 0xffffffe3 // 8b9570ffffff | mov edx, dword ptr [ebp - 0x90] // 2b952cffffff | sub edx, dword ptr [ebp - 0xd4] // 8955d0 | mov dword ptr [ebp - 0x30], edx condition: 7 of them and filesize < 303104 }
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
