There is no description at this point.
rule win_http_troy_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.http_troy." 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.http_troy" malpedia_rule_date = "20230705" malpedia_hash = "42d0574f4405bd7d2b154d321d345acb18834a41" malpedia_version = "20230715" 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 = { 8985c4feffff 8d0476 8d044578550310 6a06 } // n = 4, score = 200 // 8985c4feffff | mov dword ptr [ebp - 0x13c], eax // 8d0476 | lea eax, [esi + esi*2] // 8d044578550310 | lea eax, [eax*2 + 0x10035578] // 6a06 | push 6 $sequence_1 = { 81dadeb19d01 52 51 894608 e8???????? 894610 895614 } // n = 7, score = 200 // 81dadeb19d01 | sbb edx, 0x19db1de // 52 | push edx // 51 | push ecx // 894608 | mov dword ptr [esi + 8], eax // e8???????? | // 894610 | mov dword ptr [esi + 0x10], eax // 895614 | mov dword ptr [esi + 0x14], edx $sequence_2 = { 03ce 8bfa f7d7 0bf9 33fe 03fd 8dbc38827e53f7 } // n = 7, score = 200 // 03ce | add ecx, esi // 8bfa | mov edi, edx // f7d7 | not edi // 0bf9 | or edi, ecx // 33fe | xor edi, esi // 03fd | add edi, ebp // 8dbc38827e53f7 | lea edi, [eax + edi - 0x8ac817e] $sequence_3 = { 83c40c 85c0 0f85bafdffff 83451810 668b442474 668944244c 8b4514 } // n = 7, score = 200 // 83c40c | add esp, 0xc // 85c0 | test eax, eax // 0f85bafdffff | jne 0xfffffdc0 // 83451810 | add dword ptr [ebp + 0x18], 0x10 // 668b442474 | mov ax, word ptr [esp + 0x74] // 668944244c | mov word ptr [esp + 0x4c], ax // 8b4514 | mov eax, dword ptr [ebp + 0x14] $sequence_4 = { ff15???????? 85c0 756a 6a04 68???????? 6a04 50 } // n = 7, score = 200 // ff15???????? | // 85c0 | test eax, eax // 756a | jne 0x6c // 6a04 | push 4 // 68???????? | // 6a04 | push 4 // 50 | push eax $sequence_5 = { c744243c00000000 ff15???????? 85c0 752e 8b54240c 52 ff15???????? } // n = 7, score = 200 // c744243c00000000 | mov dword ptr [esp + 0x3c], 0 // ff15???????? | // 85c0 | test eax, eax // 752e | jne 0x30 // 8b54240c | mov edx, dword ptr [esp + 0xc] // 52 | push edx // ff15???????? | $sequence_6 = { c3 8b4d14 8b5510 50 8b450c 51 52 } // n = 7, score = 200 // c3 | ret // 8b4d14 | mov ecx, dword ptr [ebp + 0x14] // 8b5510 | mov edx, dword ptr [ebp + 0x10] // 50 | push eax // 8b450c | mov eax, dword ptr [ebp + 0xc] // 51 | push ecx // 52 | push edx $sequence_7 = { 8d642400 f6c101 7403 0faff2 d1e9 } // n = 5, score = 200 // 8d642400 | lea esp, [esp] // f6c101 | test cl, 1 // 7403 | je 5 // 0faff2 | imul esi, edx // d1e9 | shr ecx, 1 $sequence_8 = { ff7510 51 51 dd1c24 e8???????? 56 dd5d08 } // n = 7, score = 200 // ff7510 | push dword ptr [ebp + 0x10] // 51 | push ecx // 51 | push ecx // dd1c24 | fstp qword ptr [esp] // e8???????? | // 56 | push esi // dd5d08 | fstp qword ptr [ebp + 8] $sequence_9 = { 6a00 6a00 8d542428 52 53 e8???????? 83c410 } // n = 7, score = 200 // 6a00 | push 0 // 6a00 | push 0 // 8d542428 | lea edx, [esp + 0x28] // 52 | push edx // 53 | push ebx // e8???????? | // 83c410 | add esp, 0x10 condition: 7 of them and filesize < 475136 }
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