Actor(s): Lazarus Group
There is no description at this point.
rule win_applejeus_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.applejeus." 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.applejeus" malpedia_rule_date = "20231130" malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351" malpedia_version = "20230808" 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 = { 8902 8b4608 8b08 8b4604 810044f3ffff 8100bc0c0000 } // n = 6, score = 100 // 8902 | mov dword ptr [edx], eax // 8b4608 | mov eax, dword ptr [esi + 8] // 8b08 | mov ecx, dword ptr [eax] // 8b4604 | mov eax, dword ptr [esi + 4] // 810044f3ffff | add dword ptr [eax], 0xfffff344 // 8100bc0c0000 | add dword ptr [eax], 0xcbc $sequence_1 = { 8b4604 8b00 33c2 0f8583000000 c745f45b000000 8b45f4 83f032 } // n = 7, score = 100 // 8b4604 | mov eax, dword ptr [esi + 4] // 8b00 | mov eax, dword ptr [eax] // 33c2 | xor eax, edx // 0f8583000000 | jne 0x89 // c745f45b000000 | mov dword ptr [ebp - 0xc], 0x5b // 8b45f4 | mov eax, dword ptr [ebp - 0xc] // 83f032 | xor eax, 0x32 $sequence_2 = { 8945dc 8d45d0 c745d0a08e4200 897dd4 8975d8 0f1145b0 } // n = 6, score = 100 // 8945dc | mov dword ptr [ebp - 0x24], eax // 8d45d0 | lea eax, [ebp - 0x30] // c745d0a08e4200 | mov dword ptr [ebp - 0x30], 0x428ea0 // 897dd4 | mov dword ptr [ebp - 0x2c], edi // 8975d8 | mov dword ptr [ebp - 0x28], esi // 0f1145b0 | movups xmmword ptr [ebp - 0x50], xmm0 $sequence_3 = { 8b4a04 50 0f1145c8 c745a8e0294200 0f1145d8 897dac 8975b0 } // n = 7, score = 100 // 8b4a04 | mov ecx, dword ptr [edx + 4] // 50 | push eax // 0f1145c8 | movups xmmword ptr [ebp - 0x38], xmm0 // c745a8e0294200 | mov dword ptr [ebp - 0x58], 0x4229e0 // 0f1145d8 | movups xmmword ptr [ebp - 0x28], xmm0 // 897dac | mov dword ptr [ebp - 0x54], edi // 8975b0 | mov dword ptr [ebp - 0x50], esi $sequence_4 = { e8???????? 8b4dc8 83c414 8945cc 89851cffffff c700???????? 897004 } // n = 7, score = 100 // e8???????? | // 8b4dc8 | mov ecx, dword ptr [ebp - 0x38] // 83c414 | add esp, 0x14 // 8945cc | mov dword ptr [ebp - 0x34], eax // 89851cffffff | mov dword ptr [ebp - 0xe4], eax // c700???????? | // 897004 | mov dword ptr [eax + 4], esi $sequence_5 = { c745e400000000 8b410c 50 6a00 51 8b04851cfb4600 ffd0 } // n = 7, score = 100 // c745e400000000 | mov dword ptr [ebp - 0x1c], 0 // 8b410c | mov eax, dword ptr [ecx + 0xc] // 50 | push eax // 6a00 | push 0 // 51 | push ecx // 8b04851cfb4600 | mov eax, dword ptr [eax*4 + 0x46fb1c] // ffd0 | call eax $sequence_6 = { c68589f5ffff7d c6858af5ffff85 c6858bf5ffff72 c6858cf5ffff83 c6858df5ffff59 c6858ef5ffff3a c6858ff5ffff77 } // n = 7, score = 100 // c68589f5ffff7d | mov byte ptr [ebp - 0xa77], 0x7d // c6858af5ffff85 | mov byte ptr [ebp - 0xa76], 0x85 // c6858bf5ffff72 | mov byte ptr [ebp - 0xa75], 0x72 // c6858cf5ffff83 | mov byte ptr [ebp - 0xa74], 0x83 // c6858df5ffff59 | mov byte ptr [ebp - 0xa73], 0x59 // c6858ef5ffff3a | mov byte ptr [ebp - 0xa72], 0x3a // c6858ff5ffff77 | mov byte ptr [ebp - 0xa71], 0x77 $sequence_7 = { 8d4db0 e9???????? 8d4db4 e9???????? 8d4dac e9???????? 8b542408 } // n = 7, score = 100 // 8d4db0 | lea ecx, [ebp - 0x50] // e9???????? | // 8d4db4 | lea ecx, [ebp - 0x4c] // e9???????? | // 8d4dac | lea ecx, [ebp - 0x54] // e9???????? | // 8b542408 | mov edx, dword ptr [esp + 8] $sequence_8 = { e8???????? 8b7588 8d4d94 83c418 e8???????? c78568ffffffd5030000 8b8568ffffff } // n = 7, score = 100 // e8???????? | // 8b7588 | mov esi, dword ptr [ebp - 0x78] // 8d4d94 | lea ecx, [ebp - 0x6c] // 83c418 | add esp, 0x18 // e8???????? | // c78568ffffffd5030000 | mov dword ptr [ebp - 0x98], 0x3d5 // 8b8568ffffff | mov eax, dword ptr [ebp - 0x98] $sequence_9 = { 8d85d42e0000 50 ff15???????? 57 ff15???????? e9???????? ff15???????? } // n = 7, score = 100 // 8d85d42e0000 | lea eax, [ebp + 0x2ed4] // 50 | push eax // ff15???????? | // 57 | push edi // ff15???????? | // e9???????? | // ff15???????? | condition: 7 of them and filesize < 1245184 }
If your designated proposal does not fit in any other category, feel free to write a free-text in the comment field below. Changes regarding references should be proposed on the Malpedia library page.
Your suggestion will be reviewed before being published. Thank you for contributing!
YYYY-MM-DD
YYYY-MM
YYYY