Actor(s): TA428
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rule win_tmanger_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2022-05-16" version = "1" description = "Detects win.tmanger." 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.tmanger" 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 = { c741594d68b93a c7415d382cd7bd c74161d47bdb0f c741651f013f62 c74169388b8e92 c7416d9b14f6a0 c7417180fcd6bb } // n = 7, score = 200 // c741594d68b93a | jne 0x102 // c7415d382cd7bd | cmp dword ptr [ebp + 8], 0 // c74161d47bdb0f | jne 0xc1a // c741651f013f62 | mov eax, dword ptr [ebx + 0x488] // c74169388b8e92 | mov dword ptr [ebp - 0x94], eax // c7416d9b14f6a0 | test eax, eax // c7417180fcd6bb | lea eax, [ebx + 0x480] $sequence_1 = { c7410491b20524 c74108cc6188ff c7410c16d9fdf8 c741103a71c135 } // n = 4, score = 200 // c7410491b20524 | lea ecx, [ebp - 0xd0] // c74108cc6188ff | and dword ptr [ebp - 4], 0 // c7410c16d9fdf8 | lea eax, [ebx + 0x3dc] // c741103a71c135 | lea ecx, [ebp - 0xd0] $sequence_2 = { c741103a71c135 c74114c2a02ab0 c74118d95dc845 c7411cf8f0564e c7412066b8276e c7412425d933d1 } // n = 6, score = 200 // c741103a71c135 | push eax // c74114c2a02ab0 | push dword ptr [ebp + 8] // c74118d95dc845 | lea edi, [ebx + 0xc0] // c7411cf8f0564e | lea eax, [ebx + 0x90] // c7412066b8276e | push eax // c7412425d933d1 | lea eax, [ebx + 0x78] $sequence_3 = { c7412066b8276e c7412425d933d1 c7412861fdc72a c7412cdf9134d2 c74130324d251d c74134375ec19d c7413893c82e55 } // n = 7, score = 200 // c7412066b8276e | lea ecx, [ebp - 0x3b0] // c7412425d933d1 | lea eax, [ebx + 0x348] // c7412861fdc72a | mov byte ptr [ebp - 4], 0x77 // c7412cdf9134d2 | push eax // c74130324d251d | lea eax, [ebp - 0x54] // c74134375ec19d | push eax // c7413893c82e55 | lea ecx, [ebp - 0x38] $sequence_4 = { c741594d68b93a c7415d382cd7bd c74161d47bdb0f c741651f013f62 c74169388b8e92 } // n = 5, score = 200 // c741594d68b93a | lea edi, [edx + 8] // c7415d382cd7bd | push 4 // c74161d47bdb0f | mov dword ptr [ebp - 0x10], edi // c741651f013f62 | pop esi // c74169388b8e92 | lea ebx, [eax - 4] $sequence_5 = { c741510f9f2997 c7415565449eac c741594d68b93a c7415d382cd7bd c74161d47bdb0f } // n = 5, score = 200 // c741510f9f2997 | lea edi, [ecx + 0x44] // c7415565449eac | mov dword ptr [ebp - 0x11c], eax // c741594d68b93a | movsd dword ptr es:[edi], dword ptr [esi] // c7415d382cd7bd | movsd dword ptr es:[edi], dword ptr [esi] // c74161d47bdb0f | movsd dword ptr es:[edi], dword ptr [esi] $sequence_6 = { c7415d382cd7bd c74161d47bdb0f c741651f013f62 c74169388b8e92 } // n = 4, score = 200 // c7415d382cd7bd | lea ecx, [ebp - 0x3c0] // c74161d47bdb0f | lea eax, [ebp - 0x39c] // c741651f013f62 | lea ecx, [ebp - 0x3c0] // c74169388b8e92 | lea eax, [ebx + 0x8fc0] $sequence_7 = { c7414dd22a7e91 c741510f9f2997 c7415565449eac c741594d68b93a c7415d382cd7bd } // n = 5, score = 200 // c7414dd22a7e91 | movsd dword ptr es:[edi], dword ptr [esi] // c741510f9f2997 | lea edi, [ecx + 0x40] // c7415565449eac | lea eax, [ebp - 8] // c741594d68b93a | mov ecx, edi // c7415d382cd7bd | push eax $sequence_8 = { c74149ff663a9d c7414dd22a7e91 c741510f9f2997 c7415565449eac } // n = 4, score = 200 // c74149ff663a9d | lea ecx, [ebp - 0x3e0] // c7414dd22a7e91 | lea ecx, [ebp - 0x3c4] // c741510f9f2997 | lea ecx, [ebp - 0x3c4] // c7415565449eac | lea ecx, [ebp - 0x3c4] $sequence_9 = { c7411cf8f0564e c7412066b8276e c7412425d933d1 c7412861fdc72a c7412cdf9134d2 c74130324d251d } // n = 6, score = 200 // c7411cf8f0564e | lea eax, [ebp - 0x54] // c7412066b8276e | push eax // c7412425d933d1 | lea ecx, [ebp - 0x38] // c7412861fdc72a | lea eax, [ebx + 0x8fa0] // c7412cdf9134d2 | mov byte ptr [ebp - 4], 0x5f // c74130324d251d | push eax condition: 7 of them and filesize < 8252416 }
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