Actor(s): GALLIUM, UPS
There is no description at this point.
rule win_htran_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-05-16" version = "1" description = "Detects win.htran." 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.htran" malpedia_rule_date = "20220513" malpedia_hash = "7f4b2229e6ae614d86d74917f6d5b41890e62a26" malpedia_version = "20220516" 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 = { c744243001000000 ff15???????? 83f8ff 750e 813d????????14270000 7537 } // n = 6, score = 200 // c744243001000000 | mov dword ptr [esp + 0x30], 1 // ff15???????? | // 83f8ff | cmp eax, -1 // 750e | jne 0x10 // 813d????????14270000 | // 7537 | jne 0x39 $sequence_1 = { 50 e8???????? 8d8c2418f30000 53 } // n = 4, score = 200 // 50 | push eax // e8???????? | // 8d8c2418f30000 | lea ecx, [esp + 0xf318] // 53 | push ebx $sequence_2 = { 897808 8b15???????? 83c00c 8d1452 8d1495f09b4000 } // n = 5, score = 200 // 897808 | mov dword ptr [eax + 8], edi // 8b15???????? | // 83c00c | add eax, 0xc // 8d1452 | lea edx, [edx + edx*2] // 8d1495f09b4000 | lea edx, [edx*4 + 0x409bf0] $sequence_3 = { 51 e8???????? 8b570c 8be8 52 e8???????? } // n = 6, score = 200 // 51 | push ecx // e8???????? | // 8b570c | mov edx, dword ptr [edi + 0xc] // 8be8 | mov ebp, eax // 52 | push edx // e8???????? | $sequence_4 = { 83e103 f3aa ff15???????? 8b742418 e9???????? b900140000 33c0 } // n = 7, score = 200 // 83e103 | and ecx, 3 // f3aa | rep stosb byte ptr es:[edi], al // ff15???????? | // 8b742418 | mov esi, dword ptr [esp + 0x18] // e9???????? | // b900140000 | mov ecx, 0x1400 // 33c0 | xor eax, eax $sequence_5 = { 89742424 51 6a00 52 68???????? 6a00 } // n = 6, score = 200 // 89742424 | mov dword ptr [esp + 0x24], esi // 51 | push ecx // 6a00 | push 0 // 52 | push edx // 68???????? | // 6a00 | push 0 $sequence_6 = { ff15???????? 85c0 7d14 68???????? e8???????? 83c404 } // n = 6, score = 200 // ff15???????? | // 85c0 | test eax, eax // 7d14 | jge 0x16 // 68???????? | // e8???????? | // 83c404 | add esp, 4 $sequence_7 = { 89442410 c705????????03000000 8b442410 8b0d???????? 49 743a } // n = 6, score = 200 // 89442410 | mov dword ptr [esp + 0x10], eax // c705????????03000000 | // 8b442410 | mov eax, dword ptr [esp + 0x10] // 8b0d???????? | // 49 | dec ecx // 743a | je 0x3c $sequence_8 = { 8816 46 8a10 40 0fb6da f683c1c3400004 740c } // n = 7, score = 200 // 8816 | mov byte ptr [esi], dl // 46 | inc esi // 8a10 | mov dl, byte ptr [eax] // 40 | inc eax // 0fb6da | movzx ebx, dl // f683c1c3400004 | test byte ptr [ebx + 0x40c3c1], 4 // 740c | je 0xe $sequence_9 = { ff15???????? ebb6 6a00 8d8c2424010000 6800500000 } // n = 5, score = 200 // ff15???????? | // ebb6 | jmp 0xffffffb8 // 6a00 | push 0 // 8d8c2424010000 | lea ecx, [esp + 0x124] // 6800500000 | push 0x5000 condition: 7 of them and filesize < 114688 }
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