Actor(s): APT 29
There is no description at this point.
rule win_ati_agent_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.ati_agent." 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.ati_agent" 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 = { 4c8d05f5410000 33c0 498bd0 3b0a 740e ffc0 } // n = 6, score = 100 // 4c8d05f5410000 | jae 0x779 // 33c0 | dec eax // 498bd0 | mov edi, ebx // 3b0a | dec eax // 740e | mov esi, ebx // ffc0 | dec eax $sequence_1 = { 488d051ec30000 49c1fc05 4183e71f 4a8b0ce0 4c89642450 4d6bff58 418a740f38 } // n = 7, score = 100 // 488d051ec30000 | dec eax // 49c1fc05 | and dword ptr [esp + 0x20], 0 // 4183e71f | dec eax // 4a8b0ce0 | lea eax, [0xc151] // 4c89642450 | dec eax // 4d6bff58 | mov ecx, dword ptr [eax + ecx*8] // 418a740f38 | dec esp $sequence_2 = { 4c8d052885ffff 89542420 83fa05 7d15 4863ca 0fb7444b10 } // n = 6, score = 100 // 4c8d052885ffff | dec eax // 89542420 | lea edx, [esp + 0x20] // 83fa05 | cmp dword ptr [eax], ebx // 7d15 | cmovl ebx, dword ptr [eax] // 4863ca | cmp ecx, ebx // 0fb7444b10 | jge 0x75f $sequence_3 = { 4883ec20 4863d9 488d3d88a00000 4803db 48833cdf00 } // n = 5, score = 100 // 4883ec20 | inc cx // 4863d9 | mov dword ptr [eax + ecx*2 + 0xf9d0], eax // 488d3d88a00000 | jge 0x9b3 // 4803db | dec eax // 48833cdf00 | arpl di, cx $sequence_4 = { 7509 488d0553ab0000 eb04 4883c014 8918 e8???????? 4c8d153bab0000 } // n = 7, score = 100 // 7509 | mov dword ptr [esp + 8], ebx // 488d0553ab0000 | dec eax // eb04 | mov dword ptr [esp + 0x10], esi // 4883c014 | dec eax // 8918 | mov dword ptr [esp + 0x18], edi // e8???????? | // 4c8d153bab0000 | inc ecx $sequence_5 = { 488bce e8???????? e9???????? 4c8d2d6dc10000 8bcb } // n = 5, score = 100 // 488bce | mov ecx, dword ptr [esp + 0x60] // e8???????? | // e9???????? | // 4c8d2d6dc10000 | jmp 0x10a0 // 8bcb | dec esp $sequence_6 = { 8bc6 eb1f 488b4c2468 ff15???????? 488b4c2460 ff15???????? 33c0 } // n = 7, score = 100 // 8bc6 | cmp dword ptr [edi - 0x10], eax // eb1f | je 0x10c // 488b4c2468 | dec eax // ff15???????? | // 488b4c2460 | mov ecx, dword ptr [edi] // ff15???????? | // 33c0 | dec eax $sequence_7 = { 488bd9 488d0da07b0000 483bd9 723e } // n = 4, score = 100 // 488bd9 | lea ecx, [0x3751] // 488d0da07b0000 | dec eax // 483bd9 | sub esp, 0x20 // 723e | mov edi, 0x24 $sequence_8 = { 85c0 0f844e010000 488b4c2450 488364242000 488d0551c10000 } // n = 5, score = 100 // 85c0 | dec eax // 0f844e010000 | sub esp, 0x20 // 488b4c2450 | dec eax // 488364242000 | mov edi, edx // 488d0551c10000 | dec eax $sequence_9 = { 664123c0 6689444c4e 4883f90e 72e3 6644894c246c 488d442450 } // n = 6, score = 100 // 664123c0 | nop word ptr [eax + eax] // 6689444c4e | movzx eax, byte ptr [edx + ecx] // 4883f90e | xor al, 0x2e // 72e3 | xor ax, cx // 6644894c246c | dec eax // 488d442450 | inc ecx condition: 7 of them and filesize < 172032 }
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