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 = "2021-10-07" version = "1" description = "Detects win.ghost_rat." 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.ghost_rat" malpedia_rule_date = "20211007" malpedia_hash = "e5b790e0f888f252d49063a1251ca60ec2832535" malpedia_version = "20211008" 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 = { 6a01 56 ff15???????? 5e c20800 } // n = 5, score = 500 // 6a01 | push 1 // 56 | push esi // ff15???????? | // 5e | pop esi // c20800 | ret 8 $sequence_1 = { 8bd9 e8???????? 8b4d08 3bc8 } // n = 4, score = 500 // 8bd9 | mov ebx, ecx // e8???????? | // 8b4d08 | mov ecx, dword ptr [ebp + 8] // 3bc8 | cmp ecx, eax $sequence_2 = { 8b400c 85c0 7505 a1???????? 50 8bce } // n = 6, score = 500 // 8b400c | mov eax, dword ptr [eax + 0xc] // 85c0 | test eax, eax // 7505 | jne 7 // a1???????? | // 50 | push eax // 8bce | mov ecx, esi $sequence_3 = { 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_4 = { c745f800000000 df6df4 83ec08 dc0d???????? dd1c24 ff15???????? 83c408 } // n = 7, score = 400 // c745f800000000 | mov dword ptr [ebp - 8], 0 // df6df4 | fild qword ptr [ebp - 0xc] // 83ec08 | sub esp, 8 // dc0d???????? | // dd1c24 | fstp qword ptr [esp] // ff15???????? | // 83c408 | add esp, 8 $sequence_5 = { 6a6b 8bce e8???????? 5f 5e } // n = 5, score = 400 // 6a6b | push 0x6b // 8bce | mov ecx, esi // e8???????? | // 5f | pop edi // 5e | pop esi $sequence_6 = { c20400 894df4 c745f800000000 df6df4 } // n = 4, score = 400 // c20400 | ret 4 // 894df4 | mov dword ptr [ebp - 0xc], ecx // c745f800000000 | mov dword ptr [ebp - 8], 0 // df6df4 | fild qword ptr [ebp - 0xc] $sequence_7 = { 8be5 5d c20400 894df4 } // n = 4, score = 400 // 8be5 | mov esp, ebp // 5d | pop ebp // c20400 | ret 4 // 894df4 | mov dword ptr [ebp - 0xc], ecx $sequence_8 = { 8dbd85feffff f3ab 66ab aa } // n = 4, score = 300 // 8dbd85feffff | lea edi, dword ptr [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_9 = { e9???????? 8d45dc 50 681f000200 } // n = 4, score = 300 // e9???????? | // 8d45dc | lea eax, dword ptr [ebp - 0x24] // 50 | push eax // 681f000200 | push 0x2001f $sequence_10 = { ff7510 ff75dc ff15???????? 85c0 7507 c745e401000000 834dfcff } // n = 7, score = 300 // ff7510 | push dword ptr [ebp + 0x10] // ff75dc | push dword ptr [ebp - 0x24] // ff15???????? | // 85c0 | test eax, eax // 7507 | jne 9 // c745e401000000 | mov dword ptr [ebp - 0x1c], 1 // 834dfcff | or dword ptr [ebp - 4], 0xffffffff $sequence_11 = { c705????????20010000 e8???????? 8b35???????? 83c434 } // n = 4, score = 300 // c705????????20010000 | // e8???????? | // 8b35???????? | // 83c434 | add esp, 0x34 $sequence_12 = { 68???????? 6a00 6a00 e8???????? 8b96549f0000 83c41c 89849614030000 } // n = 7, score = 300 // 68???????? | // 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 $sequence_13 = { 7408 8d4e10 e8???????? 6a6b } // n = 4, score = 300 // 7408 | je 0xa // 8d4e10 | lea ecx, dword ptr [esi + 0x10] // e8???????? | // 6a6b | push 0x6b $sequence_14 = { 68???????? 50 6802000080 e8???????? 83c41c 5f 5e } // n = 7, score = 300 // 68???????? | // 50 | push eax // 6802000080 | push 0x80000002 // e8???????? | // 83c41c | add esp, 0x1c // 5f | pop edi // 5e | pop esi $sequence_15 = { 8365fc00 ff7508 ff15???????? 40 50 ff15???????? } // n = 6, score = 300 // 8365fc00 | and dword ptr [ebp - 4], 0 // ff7508 | push dword ptr [ebp + 8] // ff15???????? | // 40 | inc eax // 50 | push eax // ff15???????? | $sequence_16 = { 6a00 50 e8???????? 83c40c ff7508 6a40 ff15???????? } // n = 7, score = 300 // 6a00 | push 0 // 50 | push eax // e8???????? | // 83c40c | add esp, 0xc // ff7508 | push dword ptr [ebp + 8] // 6a40 | push 0x40 // ff15???????? | $sequence_17 = { c745c8897f0000 c745cc8b7f0000 c745d0017f0000 c745d4817f0000 } // n = 4, score = 200 // c745c8897f0000 | mov dword ptr [ebp - 0x38], 0x7f89 // c745cc8b7f0000 | mov dword ptr [ebp - 0x34], 0x7f8b // c745d0017f0000 | mov dword ptr [ebp - 0x30], 0x7f01 // c745d4817f0000 | mov dword ptr [ebp - 0x2c], 0x7f81 $sequence_18 = { c7014c6f6164 83e9fc c7014c696272 83e9fc c70161727941 83e9fc c70100000000 } // n = 7, score = 200 // c7014c6f6164 | mov dword ptr [ecx], 0x64616f4c // 83e9fc | sub ecx, -4 // c7014c696272 | mov dword ptr [ecx], 0x7262694c // 83e9fc | sub ecx, -4 // c70161727941 | mov dword ptr [ecx], 0x41797261 // 83e9fc | sub ecx, -4 // c70100000000 | mov dword ptr [ecx], 0 $sequence_19 = { c745e8857f0000 c745ec827f0000 c745f0847f0000 c745f4047f0000 } // n = 4, score = 200 // c745e8857f0000 | mov dword ptr [ebp - 0x18], 0x7f85 // c745ec827f0000 | mov dword ptr [ebp - 0x14], 0x7f82 // c745f0847f0000 | mov dword ptr [ebp - 0x10], 0x7f84 // c745f4047f0000 | mov dword ptr [ebp - 0xc], 0x7f04 $sequence_20 = { c745e0867f0000 c745e4837f0000 c745e8857f0000 c745ec827f0000 } // n = 4, score = 200 // c745e0867f0000 | mov dword ptr [ebp - 0x20], 0x7f86 // c745e4837f0000 | mov dword ptr [ebp - 0x1c], 0x7f83 // c745e8857f0000 | mov dword ptr [ebp - 0x18], 0x7f85 // c745ec827f0000 | mov dword ptr [ebp - 0x14], 0x7f82 $sequence_21 = { 8b36 813f6b006500 7406 813f4b004500 75e8 } // n = 5, score = 200 // 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_22 = { 8b761c 8b4608 8b7e20 8b36 813f6b006500 } // n = 5, score = 200 // 8b761c | mov esi, dword ptr [esi + 0x1c] // 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 $sequence_23 = { c745d8887f0000 c745dc807f0000 c745e0867f0000 c745e4837f0000 } // n = 4, score = 200 // c745d8887f0000 | mov dword ptr [ebp - 0x28], 0x7f88 // c745dc807f0000 | mov dword ptr [ebp - 0x24], 0x7f80 // c745e0867f0000 | mov dword ptr [ebp - 0x20], 0x7f86 // c745e4837f0000 | mov dword ptr [ebp - 0x1c], 0x7f83 $sequence_24 = { 8b9560ffffff 031481 89953cffffff e9???????? 8b8578ffffff } // n = 5, score = 100 // 8b9560ffffff | mov edx, dword ptr [ebp - 0xa0] // 031481 | add edx, dword ptr [ecx + eax*4] // 89953cffffff | mov dword ptr [ebp - 0xc4], edx // e9???????? | // 8b8578ffffff | mov eax, dword ptr [ebp - 0x88] $sequence_25 = { 0f8380000000 8b8548ffffff 8b8d60ffffff 034820 } // n = 4, score = 100 // 0f8380000000 | jae 0x86 // 8b8548ffffff | mov eax, dword ptr [ebp - 0xb8] // 8b8d60ffffff | mov ecx, dword ptr [ebp - 0xa0] // 034820 | add ecx, dword ptr [eax + 0x20] $sequence_26 = { 0308 894dbc 8b55bc 833a00 7475 8b45bc 8b08 } // n = 7, score = 100 // 0308 | add ecx, dword ptr [eax] // 894dbc | mov dword ptr [ebp - 0x44], ecx // 8b55bc | mov edx, dword ptr [ebp - 0x44] // 833a00 | cmp dword ptr [edx], 0 // 7475 | je 0x77 // 8b45bc | mov eax, dword ptr [ebp - 0x44] // 8b08 | mov ecx, dword ptr [eax] $sequence_27 = { ff9518ffffff 898558ffffff 8b4dd0 51 } // n = 4, score = 100 // ff9518ffffff | call dword ptr [ebp - 0xe8] // 898558ffffff | mov dword ptr [ebp - 0xa8], eax // 8b4dd0 | mov ecx, dword ptr [ebp - 0x30] // 51 | push ecx $sequence_28 = { 41 ebc0 8d8d98ffffff c7014c6f6164 } // n = 4, score = 100 // 41 | inc ecx // ebc0 | jmp 0xffffffc2 // 8d8d98ffffff | lea ecx, dword ptr [ebp - 0x68] // c7014c6f6164 | mov dword ptr [ecx], 0x64616f4c condition: 7 of them and filesize < 357376 }
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