Actor(s): Pirate Panda
There is no description at this point.
rule win_usbferry_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-12-06" version = "1" description = "Detects win.usbferry." 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.usbferry" 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 = { 52 8b45e0 50 ff15???????? 85c0 742c } // n = 6, score = 200 // 52 | push edx // 8b45e0 | mov eax, dword ptr [ebp - 0x20] // 50 | push eax // ff15???????? | // 85c0 | test eax, eax // 742c | je 0x2e $sequence_1 = { 8b9598f5ffff 2b9588f5ffff 8b8588f5ffff 89857cf5ffff 899578f5ffff } // n = 5, score = 200 // 8b9598f5ffff | mov edx, dword ptr [ebp - 0xa68] // 2b9588f5ffff | sub edx, dword ptr [ebp - 0xa78] // 8b8588f5ffff | mov eax, dword ptr [ebp - 0xa78] // 89857cf5ffff | mov dword ptr [ebp - 0xa84], eax // 899578f5ffff | mov dword ptr [ebp - 0xa88], edx $sequence_2 = { e9???????? ff75e0 a1???????? ff5060 8d45e0 } // n = 5, score = 200 // e9???????? | // ff75e0 | push dword ptr [ebp - 0x20] // a1???????? | // ff5060 | call dword ptr [eax + 0x60] // 8d45e0 | lea eax, [ebp - 0x20] $sequence_3 = { c3 3b0d???????? f27502 f2c3 f2e960030000 55 } // n = 6, score = 200 // c3 | ret // 3b0d???????? | // f27502 | bnd jne 5 // f2c3 | bnd ret // f2e960030000 | bnd jmp 0x366 // 55 | push ebp $sequence_4 = { 8b525c e8???????? 8b15???????? 8b4d84 ff7210 89425c } // n = 6, score = 200 // 8b525c | mov edx, dword ptr [edx + 0x5c] // e8???????? | // 8b15???????? | // 8b4d84 | mov ecx, dword ptr [ebp - 0x7c] // ff7210 | push dword ptr [edx + 0x10] // 89425c | mov dword ptr [edx + 0x5c], eax $sequence_5 = { 803f2e 7402 33ff 85ff 7407 8d45e9 } // n = 6, score = 200 // 803f2e | cmp byte ptr [edi], 0x2e // 7402 | je 4 // 33ff | xor edi, edi // 85ff | test edi, edi // 7407 | je 9 // 8d45e9 | lea eax, [ebp - 0x17] $sequence_6 = { c645df6f c645e06e c645e100 c685a4f5ffff00 68ff030000 } // n = 5, score = 200 // c645df6f | mov byte ptr [ebp - 0x21], 0x6f // c645e06e | mov byte ptr [ebp - 0x20], 0x6e // c645e100 | mov byte ptr [ebp - 0x1f], 0 // c685a4f5ffff00 | mov byte ptr [ebp - 0xa5c], 0 // 68ff030000 | push 0x3ff $sequence_7 = { 2b858cf5ffff 8b8d8cf5ffff 898d84f5ffff 898580f5ffff 8d95a8feffff 83c2ff } // n = 6, score = 200 // 2b858cf5ffff | sub eax, dword ptr [ebp - 0xa74] // 8b8d8cf5ffff | mov ecx, dword ptr [ebp - 0xa74] // 898d84f5ffff | mov dword ptr [ebp - 0xa7c], ecx // 898580f5ffff | mov dword ptr [ebp - 0xa80], eax // 8d95a8feffff | lea edx, [ebp - 0x158] // 83c2ff | add edx, -1 $sequence_8 = { 8b7d0c 33db 895ddc c745e000040000 895dfc 8d45dc } // n = 6, score = 200 // 8b7d0c | mov edi, dword ptr [ebp + 0xc] // 33db | xor ebx, ebx // 895ddc | mov dword ptr [ebp - 0x24], ebx // c745e000040000 | mov dword ptr [ebp - 0x20], 0x400 // 895dfc | mov dword ptr [ebp - 4], ebx // 8d45dc | lea eax, [ebp - 0x24] $sequence_9 = { 89814c010000 8b09 e8???????? 8b0d???????? ff7110 8b9154010000 } // n = 6, score = 200 // 89814c010000 | mov dword ptr [ecx + 0x14c], eax // 8b09 | mov ecx, dword ptr [ecx] // e8???????? | // 8b0d???????? | // ff7110 | push dword ptr [ecx + 0x10] // 8b9154010000 | mov edx, dword ptr [ecx + 0x154] $sequence_10 = { ff7110 8b517c 894178 8b09 e8???????? 8b0d???????? } // n = 6, score = 200 // ff7110 | push dword ptr [ecx + 0x10] // 8b517c | mov edx, dword ptr [ecx + 0x7c] // 894178 | mov dword ptr [ecx + 0x78], eax // 8b09 | mov ecx, dword ptr [ecx] // e8???????? | // 8b0d???????? | $sequence_11 = { 8a460e 8bcf 8845fb 8d45fb } // n = 4, score = 200 // 8a460e | mov al, byte ptr [esi + 0xe] // 8bcf | mov ecx, edi // 8845fb | mov byte ptr [ebp - 5], al // 8d45fb | lea eax, [ebp - 5] $sequence_12 = { 33c5 8945fc c685fcfffeff00 68ffff0000 } // n = 4, score = 200 // 33c5 | xor eax, ebp // 8945fc | mov dword ptr [ebp - 4], eax // c685fcfffeff00 | mov byte ptr [ebp - 0x10004], 0 // 68ffff0000 | push 0xffff $sequence_13 = { 8885a0f5ffff 838590f5ffff01 80bda0f5ffff00 75e1 } // n = 4, score = 200 // 8885a0f5ffff | mov byte ptr [ebp - 0xa60], al // 838590f5ffff01 | add dword ptr [ebp - 0xa70], 1 // 80bda0f5ffff00 | cmp byte ptr [ebp - 0xa60], 0 // 75e1 | jne 0xffffffe3 $sequence_14 = { 0f2805???????? 0f1145c8 6a00 0f2805???????? 0f1145d8 50 } // n = 6, score = 200 // 0f2805???????? | // 0f1145c8 | movups xmmword ptr [ebp - 0x38], xmm0 // 6a00 | push 0 // 0f2805???????? | // 0f1145d8 | movups xmmword ptr [ebp - 0x28], xmm0 // 50 | push eax $sequence_15 = { 50 8d45f0 64a300000000 c745e000000000 c745fc00000000 837d2000 } // n = 6, score = 200 // 50 | push eax // 8d45f0 | lea eax, [ebp - 0x10] // 64a300000000 | mov dword ptr fs:[0], eax // c745e000000000 | mov dword ptr [ebp - 0x20], 0 // c745fc00000000 | mov dword ptr [ebp - 4], 0 // 837d2000 | cmp dword ptr [ebp + 0x20], 0 condition: 7 of them and filesize < 638976 }
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