Actor(s): Energetic Bear
There is no description at this point.
rule win_listrix_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-04-08" version = "1" description = "Detects win.listrix." 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.listrix" malpedia_rule_date = "20220405" malpedia_hash = "ecd38294bd47d5589be5cd5490dc8bb4804afc2a" malpedia_version = "20220411" 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 ff15???????? 8b7518 85f6 7f06 0f89dd000000 8d8d94f5ffff } // n = 7, score = 100 // 50 | push eax // ff15???????? | // 8b7518 | mov esi, dword ptr [ebp + 0x18] // 85f6 | test esi, esi // 7f06 | jg 8 // 0f89dd000000 | jns 0xe3 // 8d8d94f5ffff | lea ecx, dword ptr [ebp - 0xa6c] $sequence_1 = { 68???????? 51 ff15???????? 83c424 8d95f4fbffff } // n = 5, score = 100 // 68???????? | // 51 | push ecx // ff15???????? | // 83c424 | add esp, 0x24 // 8d95f4fbffff | lea edx, dword ptr [ebp - 0x40c] $sequence_2 = { e8???????? 83c414 8b9d90f5ffff 8d9594f5ffff } // n = 4, score = 100 // e8???????? | // 83c414 | add esp, 0x14 // 8b9d90f5ffff | mov ebx, dword ptr [ebp - 0xa70] // 8d9594f5ffff | lea edx, dword ptr [ebp - 0xa6c] $sequence_3 = { 8b35???????? 57 68ff000000 8d85f4fdffff } // n = 4, score = 100 // 8b35???????? | // 57 | push edi // 68ff000000 | push 0xff // 8d85f4fdffff | lea eax, dword ptr [ebp - 0x20c] $sequence_4 = { 0f84ac010000 8b1d???????? 68???????? 8d85c0f5ffff } // n = 4, score = 100 // 0f84ac010000 | je 0x1b2 // 8b1d???????? | // 68???????? | // 8d85c0f5ffff | lea eax, dword ptr [ebp - 0xa40] $sequence_5 = { 51 ff15???????? 83c424 8d95f4fbffff } // n = 4, score = 100 // 51 | push ecx // ff15???????? | // 83c424 | add esp, 0x24 // 8d95f4fbffff | lea edx, dword ptr [ebp - 0x40c] $sequence_6 = { 68???????? 8d8dc0f5ffff 51 ffd3 } // n = 4, score = 100 // 68???????? | // 8d8dc0f5ffff | lea ecx, dword ptr [ebp - 0xa40] // 51 | push ecx // ffd3 | call ebx $sequence_7 = { 6806020000 52 8d85eefbffff 50 668995ecfbffff e8???????? } // n = 6, score = 100 // 6806020000 | push 0x206 // 52 | push edx // 8d85eefbffff | lea eax, dword ptr [ebp - 0x412] // 50 | push eax // 668995ecfbffff | mov word ptr [ebp - 0x414], dx // e8???????? | $sequence_8 = { 0f8503ffffff 8b35???????? 68???????? 68???????? ff15???????? 68dc050000 } // n = 6, score = 100 // 0f8503ffffff | jne 0xffffff09 // 8b35???????? | // 68???????? | // 68???????? | // ff15???????? | // 68dc050000 | push 0x5dc $sequence_9 = { 7229 f3a5 ff2495604b4000 8bc7 ba03000000 } // n = 5, score = 100 // 7229 | jb 0x2b // f3a5 | rep movsd dword ptr es:[edi], dword ptr [esi] // ff2495604b4000 | jmp dword ptr [edx*4 + 0x404b60] // 8bc7 | mov eax, edi // ba03000000 | mov edx, 3 condition: 7 of them and filesize < 106496 }
rule win_listrix_w0 { meta: author = "Florian Roth" reference = "https://www.symantec.com/connect/blogs/dragonfly-western-energy-sector-targeted-sophisticated-attack-group" malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.listrix" malpedia_version = "20180301" malpedia_license = "CC BY-NC-SA 4.0" malpedia_sharing = "TLP:WHITE" strings: $s1 = "\\Update\\Temp\\ufiles.txt" fullword wide $s2 = "%02d.%02d.%04d %02d:%02d" fullword wide $s3 = "*pass*.*" fullword wide condition: all of them }
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