Actor(s): Turla
There is no description at this point.
rule win_satellite_turla_auto { meta: author = "Felix Bilstein - yara-signator at cocacoding dot com" date = "2023-07-11" version = "1" description = "Detects win.satellite_turla." 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.satellite_turla" 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 = { 0105???????? 81c3b0020000 2945e0 75ae 837dd400 } // n = 5, score = 200 // 0105???????? | // 81c3b0020000 | add ebx, 0x2b0 // 2945e0 | sub dword ptr [ebp - 0x20], eax // 75ae | jne 0xffffffb0 // 837dd400 | cmp dword ptr [ebp - 0x2c], 0 $sequence_1 = { 0108 833e00 7c1f 8b542410 } // n = 4, score = 200 // 0108 | add dword ptr [eax], ecx // 833e00 | cmp dword ptr [esi], 0 // 7c1f | jl 0x21 // 8b542410 | mov edx, dword ptr [esp + 0x10] $sequence_2 = { 0108 833e00 7fc7 db46fc } // n = 4, score = 200 // 0108 | add dword ptr [eax], ecx // 833e00 | cmp dword ptr [esi], 0 // 7fc7 | jg 0xffffffc9 // db46fc | fild dword ptr [esi - 4] $sequence_3 = { 0105???????? 83c410 29442418 75a9 } // n = 4, score = 200 // 0105???????? | // 83c410 | add esp, 0x10 // 29442418 | sub dword ptr [esp + 0x18], eax // 75a9 | jne 0xffffffab $sequence_4 = { 0105???????? 83c410 29442420 75aa } // n = 4, score = 200 // 0105???????? | // 83c410 | add esp, 0x10 // 29442420 | sub dword ptr [esp + 0x20], eax // 75aa | jne 0xffffffac $sequence_5 = { 0108 833a00 7c23 8b442428 } // n = 4, score = 200 // 0108 | add dword ptr [eax], ecx // 833a00 | cmp dword ptr [edx], 0 // 7c23 | jl 0x25 // 8b442428 | mov eax, dword ptr [esp + 0x28] $sequence_6 = { 51 8d9508020000 52 57 } // n = 4, score = 200 // 51 | push ecx // 8d9508020000 | lea edx, [ebp + 0x208] // 52 | push edx // 57 | push edi $sequence_7 = { 0108 833e00 7cc7 7e39 } // n = 4, score = 200 // 0108 | add dword ptr [eax], ecx // 833e00 | cmp dword ptr [esi], 0 // 7cc7 | jl 0xffffffc9 // 7e39 | jle 0x3b $sequence_8 = { c645e74d e8???????? 83c40c 8d45dc 885de7 } // n = 5, score = 100 // c645e74d | mov byte ptr [ebp - 0x19], 0x4d // e8???????? | // 83c40c | add esp, 0xc // 8d45dc | lea eax, [ebp - 0x24] // 885de7 | mov byte ptr [ebp - 0x19], bl $sequence_9 = { 6804010000 50 53 ff15???????? 53 53 6a05 } // n = 7, score = 100 // 6804010000 | push 0x104 // 50 | push eax // 53 | push ebx // ff15???????? | // 53 | push ebx // 53 | push ebx // 6a05 | push 5 $sequence_10 = { 56 56 ff15???????? ff15???????? 56 } // n = 5, score = 100 // 56 | push esi // 56 | push esi // ff15???????? | // ff15???????? | // 56 | push esi $sequence_11 = { c645bc21 c645bd30 c645be13 c645bf3c c645c039 c645c130 } // n = 6, score = 100 // c645bc21 | mov byte ptr [ebp - 0x44], 0x21 // c645bd30 | mov byte ptr [ebp - 0x43], 0x30 // c645be13 | mov byte ptr [ebp - 0x42], 0x13 // c645bf3c | mov byte ptr [ebp - 0x41], 0x3c // c645c039 | mov byte ptr [ebp - 0x40], 0x39 // c645c130 | mov byte ptr [ebp - 0x3f], 0x30 $sequence_12 = { c645e04d c645e160 c645e249 c645e346 c645e44c c645e544 c645e64d } // n = 7, score = 100 // c645e04d | mov byte ptr [ebp - 0x20], 0x4d // c645e160 | mov byte ptr [ebp - 0x1f], 0x60 // c645e249 | mov byte ptr [ebp - 0x1e], 0x49 // c645e346 | mov byte ptr [ebp - 0x1d], 0x46 // c645e44c | mov byte ptr [ebp - 0x1c], 0x4c // c645e544 | mov byte ptr [ebp - 0x1b], 0x44 // c645e64d | mov byte ptr [ebp - 0x1a], 0x4d $sequence_13 = { 8d85f0feffff 50 56 ff15???????? 8d85f0feffff } // n = 5, score = 100 // 8d85f0feffff | lea eax, [ebp - 0x110] // 50 | push eax // 56 | push esi // ff15???????? | // 8d85f0feffff | lea eax, [ebp - 0x110] $sequence_14 = { 8d7dc8 8975c4 f3ab 8d45c4 } // n = 4, score = 100 // 8d7dc8 | lea edi, [ebp - 0x38] // 8975c4 | mov dword ptr [ebp - 0x3c], esi // f3ab | rep stosd dword ptr es:[edi], eax // 8d45c4 | lea eax, [ebp - 0x3c] $sequence_15 = { c645af0b c645b004 c645b10e c645b226 c645b303 c645b404 c645b50f } // n = 7, score = 100 // c645af0b | mov byte ptr [ebp - 0x51], 0xb // c645b004 | mov byte ptr [ebp - 0x50], 4 // c645b10e | mov byte ptr [ebp - 0x4f], 0xe // c645b226 | mov byte ptr [ebp - 0x4e], 0x26 // c645b303 | mov byte ptr [ebp - 0x4d], 3 // c645b404 | mov byte ptr [ebp - 0x4c], 4 // c645b50f | mov byte ptr [ebp - 0x4b], 0xf condition: 7 of them and filesize < 1040384 }
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