There is no description at this point.
rule win_zeus_action_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-01-25" version = "1" description = "Detects win.zeus_action." 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.zeus_action" 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 = { 0fb702 894d08 8b4908 2bc8 0fb707 83c418 3bc1 } // n = 7, score = 300 // 0fb702 | movzx eax, word ptr [edx] // 894d08 | mov dword ptr [ebp + 8], ecx // 8b4908 | mov ecx, dword ptr [ecx + 8] // 2bc8 | sub ecx, eax // 0fb707 | movzx eax, word ptr [edi] // 83c418 | add esp, 0x18 // 3bc1 | cmp eax, ecx $sequence_1 = { ff742420 89742428 ff15???????? 85c0 7422 57 e8???????? } // n = 7, score = 300 // ff742420 | push dword ptr [esp + 0x20] // 89742428 | mov dword ptr [esp + 0x28], esi // ff15???????? | // 85c0 | test eax, eax // 7422 | je 0x24 // 57 | push edi // e8???????? | $sequence_2 = { 743b ff7310 ff7710 e8???????? 59 59 85c0 } // n = 7, score = 300 // 743b | je 0x3d // ff7310 | push dword ptr [ebx + 0x10] // ff7710 | push dword ptr [edi + 0x10] // e8???????? | // 59 | pop ecx // 59 | pop ecx // 85c0 | test eax, eax $sequence_3 = { 7409 ff7610 e8???????? 59 6a06 8bfe } // n = 6, score = 300 // 7409 | je 0xb // ff7610 | push dword ptr [esi + 0x10] // e8???????? | // 59 | pop ecx // 6a06 | push 6 // 8bfe | mov edi, esi $sequence_4 = { 33f1 33b388feffff 33d0 33938cfeffff 33b3c8000000 3393cc000000 } // n = 6, score = 300 // 33f1 | xor esi, ecx // 33b388feffff | xor esi, dword ptr [ebx - 0x178] // 33d0 | xor edx, eax // 33938cfeffff | xor edx, dword ptr [ebx - 0x174] // 33b3c8000000 | xor esi, dword ptr [ebx + 0xc8] // 3393cc000000 | xor edx, dword ptr [ebx + 0xcc] $sequence_5 = { 8981f4000000 eb05 a3???????? 85c0 7406 8988f0000000 57 } // n = 7, score = 300 // 8981f4000000 | mov dword ptr [ecx + 0xf4], eax // eb05 | jmp 7 // a3???????? | // 85c0 | test eax, eax // 7406 | je 8 // 8988f0000000 | mov dword ptr [eax + 0xf0], ecx // 57 | push edi $sequence_6 = { 8b5d24 2bce 89451c 85db 0f8e80000000 8d0409 8b4d14 } // n = 7, score = 300 // 8b5d24 | mov ebx, dword ptr [ebp + 0x24] // 2bce | sub ecx, esi // 89451c | mov dword ptr [ebp + 0x1c], eax // 85db | test ebx, ebx // 0f8e80000000 | jle 0x86 // 8d0409 | lea eax, [ecx + ecx] // 8b4d14 | mov ecx, dword ptr [ebp + 0x14] $sequence_7 = { 8b431c 8bd0 81e200fc0000 81fa00dc0000 7516 baff030000 23ca } // n = 7, score = 300 // 8b431c | mov eax, dword ptr [ebx + 0x1c] // 8bd0 | mov edx, eax // 81e200fc0000 | and edx, 0xfc00 // 81fa00dc0000 | cmp edx, 0xdc00 // 7516 | jne 0x18 // baff030000 | mov edx, 0x3ff // 23ca | and ecx, edx $sequence_8 = { 32db ff742410 e8???????? 59 397c2434 740a ff742434 } // n = 7, score = 300 // 32db | xor bl, bl // ff742410 | push dword ptr [esp + 0x10] // e8???????? | // 59 | pop ecx // 397c2434 | cmp dword ptr [esp + 0x34], edi // 740a | je 0xc // ff742434 | push dword ptr [esp + 0x34] $sequence_9 = { 40 393481 74f5 48 3bfa 7507 8945f0 } // n = 7, score = 300 // 40 | inc eax // 393481 | cmp dword ptr [ecx + eax*4], esi // 74f5 | je 0xfffffff7 // 48 | dec eax // 3bfa | cmp edi, edx // 7507 | jne 9 // 8945f0 | mov dword ptr [ebp - 0x10], eax condition: 7 of them and filesize < 827392 }
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