Actor(s): Lazarus Group
There is no description at this point.
rule win_artfulpie_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.artfulpie." 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.artfulpie" malpedia_rule_date = "20230124" malpedia_hash = "2ee0eebba83dce3d019a90519f2f972c0fcf9686" malpedia_version = "20230125" 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 = { 5e 8be5 5d c3 8b35???????? 57 ffd6 } // n = 7, score = 100 // 5e | pop esi // 8be5 | mov esp, ebp // 5d | pop ebp // c3 | ret // 8b35???????? | // 57 | push edi // ffd6 | call esi $sequence_1 = { c745e400000000 c745f801000000 663b4706 0f83a0000000 83c364 8b7630 } // n = 6, score = 100 // c745e400000000 | mov dword ptr [ebp - 0x1c], 0 // c745f801000000 | mov dword ptr [ebp - 8], 1 // 663b4706 | cmp ax, word ptr [edi + 6] // 0f83a0000000 | jae 0xa6 // 83c364 | add ebx, 0x64 // 8b7630 | mov esi, dword ptr [esi + 0x30] $sequence_2 = { 03fb 50 57 e8???????? 897ef8 8b15???????? } // n = 6, score = 100 // 03fb | add edi, ebx // 50 | push eax // 57 | push edi // e8???????? | // 897ef8 | mov dword ptr [esi - 8], edi // 8b15???????? | $sequence_3 = { 8b5034 2b5634 740c 8bcb } // n = 4, score = 100 // 8b5034 | mov edx, dword ptr [eax + 0x34] // 2b5634 | sub edx, dword ptr [esi + 0x34] // 740c | je 0xe // 8bcb | mov ecx, ebx $sequence_4 = { 660f1f440000 8d1c31 ff7728 85c0 7905 } // n = 5, score = 100 // 660f1f440000 | nop word ptr [eax + eax] // 8d1c31 | lea ebx, [ecx + esi] // ff7728 | push dword ptr [edi + 0x28] // 85c0 | test eax, eax // 7905 | jns 7 $sequence_5 = { 0f118558ffffff 56 0f2805???????? 8bf1 0f118568ffffff } // n = 5, score = 100 // 0f118558ffffff | movups xmmword ptr [ebp - 0xa8], xmm0 // 56 | push esi // 0f2805???????? | // 8bf1 | mov esi, ecx // 0f118568ffffff | movups xmmword ptr [ebp - 0x98], xmm0 $sequence_6 = { 8901 33c0 40 e9???????? 8365c800 c745cc6b464000 a1???????? } // n = 7, score = 100 // 8901 | mov dword ptr [ecx], eax // 33c0 | xor eax, eax // 40 | inc eax // e9???????? | // 8365c800 | and dword ptr [ebp - 0x38], 0 // c745cc6b464000 | mov dword ptr [ebp - 0x34], 0x40466b // a1???????? | $sequence_7 = { 8b5d0c 56 33f6 83fb40 } // n = 4, score = 100 // 8b5d0c | mov ebx, dword ptr [ebp + 0xc] // 56 | push esi // 33f6 | xor esi, esi // 83fb40 | cmp ebx, 0x40 $sequence_8 = { 75e3 8d45d4 50 ff15???????? 8b4dd8 8d51ff 8d59ff } // n = 7, score = 100 // 75e3 | jne 0xffffffe5 // 8d45d4 | lea eax, [ebp - 0x2c] // 50 | push eax // ff15???????? | // 8b4dd8 | mov ecx, dword ptr [ebp - 0x28] // 8d51ff | lea edx, [ecx - 1] // 8d59ff | lea ebx, [ecx - 1] $sequence_9 = { e8???????? 83c414 85c0 7465 8b03 8b5034 2b5634 } // n = 7, score = 100 // e8???????? | // 83c414 | add esp, 0x14 // 85c0 | test eax, eax // 7465 | je 0x67 // 8b03 | mov eax, dword ptr [ebx] // 8b5034 | mov edx, dword ptr [eax + 0x34] // 2b5634 | sub edx, dword ptr [esi + 0x34] condition: 7 of them and filesize < 204800 }
rule win_artfulpie_w0 { meta: description = "Detects APT38 ARTFULPIE" author = "Emanuele De Lucia" tlp = "white" malfamily = "ARTFULPIE" actor = "Lazarus Group" actor_type = "APT" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.artfulpie" malpedia_version = "20200227" malpedia_license = "CC BY-NC-SA 4.0" malpedia_sharing = "TLP:WHITE" strings: $a = "PPPh @A" fullword ascii $b = "3>3D3M3X3h3" fullword ascii $c = "2`2d2h2p8t8x8|8" fullword ascii $d = {C7 43 (1C|20) (60|70) 1E 40 00} condition: filesize < 200KB and uint16(0) == 0x5a4d and all of them }
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