Actor(s): APT 30
There is no description at this point.
rule win_rhttpctrl_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.rhttpctrl." 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.rhttpctrl" malpedia_rule_date = "20231130" malpedia_hash = "fc8a0e9f343f6d6ded9e7df1a64dac0cc68d7351" malpedia_version = "20230808" 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 = { e8???????? 83c404 833d????????ff 7533 ff15???????? 68???????? c705????????dcfb4100 } // n = 7, score = 100 // e8???????? | // 83c404 | add esp, 4 // 833d????????ff | // 7533 | jne 0x35 // ff15???????? | // 68???????? | // c705????????dcfb4100 | $sequence_1 = { e8???????? 8b404c 83b8a800000000 750e 8b04bd30424200 807c302900 741d } // n = 7, score = 100 // e8???????? | // 8b404c | mov eax, dword ptr [eax + 0x4c] // 83b8a800000000 | cmp dword ptr [eax + 0xa8], 0 // 750e | jne 0x10 // 8b04bd30424200 | mov eax, dword ptr [edi*4 + 0x424230] // 807c302900 | cmp byte ptr [eax + esi + 0x29], 0 // 741d | je 0x1f $sequence_2 = { ffb5dcfbffff c785d8fbffff10fc4100 ff15???????? 33c0 } // n = 4, score = 100 // ffb5dcfbffff | push dword ptr [ebp - 0x424] // c785d8fbffff10fc4100 | mov dword ptr [ebp - 0x428], 0x41fc10 // ff15???????? | // 33c0 | xor eax, eax $sequence_3 = { c645d800 68???????? 8d45d8 660fd645e9 } // n = 4, score = 100 // c645d800 | mov byte ptr [ebp - 0x28], 0 // 68???????? | // 8d45d8 | lea eax, [ebp - 0x28] // 660fd645e9 | movq qword ptr [ebp - 0x17], xmm0 $sequence_4 = { 8be5 5d c3 68???????? ff15???????? 833d????????00 b301 } // n = 7, score = 100 // 8be5 | mov esp, ebp // 5d | pop ebp // c3 | ret // 68???????? | // ff15???????? | // 833d????????00 | // b301 | mov bl, 1 $sequence_5 = { 3bf1 756e 8b4bf0 8d73f0 8b01 ff5010 397e0c } // n = 7, score = 100 // 3bf1 | cmp esi, ecx // 756e | jne 0x70 // 8b4bf0 | mov ecx, dword ptr [ebx - 0x10] // 8d73f0 | lea esi, [ebx - 0x10] // 8b01 | mov eax, dword ptr [ecx] // ff5010 | call dword ptr [eax + 0x10] // 397e0c | cmp dword ptr [esi + 0xc], edi $sequence_6 = { 8b08 85c9 7407 395004 } // n = 4, score = 100 // 8b08 | mov ecx, dword ptr [eax] // 85c9 | test ecx, ecx // 7407 | je 9 // 395004 | cmp dword ptr [eax + 4], edx $sequence_7 = { 50 8d842498000000 50 e8???????? 83cbff 85c0 } // n = 6, score = 100 // 50 | push eax // 8d842498000000 | lea eax, [esp + 0x98] // 50 | push eax // e8???????? | // 83cbff | or ebx, 0xffffffff // 85c0 | test eax, eax $sequence_8 = { 50 56 ff15???????? 85c0 7536 8b4714 8b35???????? } // n = 7, score = 100 // 50 | push eax // 56 | push esi // ff15???????? | // 85c0 | test eax, eax // 7536 | jne 0x38 // 8b4714 | mov eax, dword ptr [edi + 0x14] // 8b35???????? | $sequence_9 = { 57 e8???????? ffb5f8feffff 8d85fcfeffff 50 } // n = 5, score = 100 // 57 | push edi // e8???????? | // ffb5f8feffff | push dword ptr [ebp - 0x108] // 8d85fcfeffff | lea eax, [ebp - 0x104] // 50 | push eax condition: 7 of them and filesize < 339968 }
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