{"Id":"a845a05c-5357-4b78-9783-16b4d34b2cb0","Tags":["aswVmm.sys"],"Verified":"TRUE","Author":"Michael Haag","Created":"2023-01-09","MitreID":"T1068","Category":"vulnerable driver","Commands":{"Command":"sc.exe create aswVmm.sys binPath=C:\\windows\\temp\\aswVmm.sys type=kernel && sc.exe start aswVmm.sys","Description":"","OperatingSystem":"Windows 10","Privileges":"kernel","Usecase":"Elevate privileges"},"Resources":["https://github.com/tanduRE/AvastHV","https://github.com/elastic/protections-artifacts/search?q=VulnDriver"],"Detection":[{"type":"yara_signature","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/yara/36505921af5a09175395ebaea29c72b2a69a3a9204384a767a5be8a721f31b10.yara"},{"type":"sigma_hash","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers.yml"},{"type":"sigma_names","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers_names.yml"},{"type":"sysmon_hash_detect","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes.xml"},{"type":"sysmon_hash_block","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes_block.xml"},{"type":"yara_signature","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/yara/yara-rules_vuln_drivers_strict_renamed.yar"},{"type":"sigma_hash","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers.yml"},{"type":"sigma_names","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sigma/driver_load_win_vuln_drivers_names.yml"},{"type":"sysmon_hash_detect","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes.xml"},{"type":"sysmon_hash_block","value":"https://github.com/magicsword-io/LOLDrivers/blob/main/detections/sysmon/sysmon_config_vulnerable_hashes_block.xml"}],"Acknowledgement":{"Handle":"","Person":""},"KnownVulnerableSamples":[{"Authentihash":{"MD5":"14260121e1984480cf6e7ec1adead3a3","SHA1":"bce48d80831090b849b7f0d2f9dffd36ec44d894","SHA256":"a2b0b2e9e458016b22ebbf47411008f0a87efd9103b125870ce37246ab5bdff0"},"Company":"AVAST Software","Copyright":"Copyright (c) 2013 AVAST Software","CreationTimestamp":"2013-08-30 03:36:44","Date":"","Description":"avast! VM Monitor","ExportedFunctions":"","FileVersion":"8.0.1497.376","Filename":"aswVmm.sys","ImportedFunctions":["memcpy","IoDeleteDevice","ZwClose","IoDeleteSymbolicLink","RtlInitUnicodeString","ExDeleteResourceLite","IoReleaseRemoveLockAndWaitEx","KeCancelTimer","ExFreePoolWithTag","IoUnregisterShutdownNotification","KeSetTimerEx","KeInitializeDpc","KeInitializeTimerEx","IoCreateSymbolicLink","KeInitializeEvent","IoRegisterShutdownNotification","RtlAppendUnicodeToString","RtlCopyUnicodeString","ExAllocatePoolWithTag","ExInitializeResourceLite","IoAcquireRemoveLockEx","IoInitializeRemoveLockEx","IoIsWdmVersionAvailable","KeQueryActiveProcessors","InitSafeBootMode","MmFreeContiguousMemory","MmGetPhysicalAddress","_allrem","_alldiv","MmUnmapIoSpace","MmMapIoSpace","MmFreePagesFromMdl","MmUnmapLockedPages","MmMapLockedPagesSpecifyCache","IoReleaseRemoveLockEx","IofCompleteRequest","KeLeaveCriticalRegion","ExReleaseResourceLite","ExAcquireResourceExclusiveLite","KeEnterCriticalRegion","ExAcquireResourceSharedLite","IoFreeMdl","MmUnlockPages","MmProbeAndLockPages","IoAllocateMdl","RtlLookupElementGenericTableAvl","RtlDeleteElementGenericTableAvl","RtlInsertElementGenericTableAvl","_aullshr","KeUnstackDetachProcess","KeStackAttachProcess","PsLookupProcessByProcessId","RtlInitializeGenericTableAvl","RtlEnumerateGenericTableAvl","RtlIsGenericTableEmptyAvl","ZwOpenFile","_allshr","_allmul","MmIsAddressValid","MmGetSystemRoutineAddress","IoFreeWorkItem","PsGetProcessWin32Process","IoGetCurrentProcess","IoQueueWorkItem","IoAllocateWorkItem","MmAllocateContiguousMemorySpecifyCache","ExRegisterCallback","ExCreateCallback","ExUnregisterCallback","PsRemoveLoadImageNotifyRoutine","PsSetLoadImageNotifyRoutine","PsSetCreateProcessNotifyRoutine","KeResetEvent","KeSetEvent","MmGetPhysicalMemoryRanges","MmAllocatePagesForMdl","RtlCheckRegistryKey","RtlCompareUnicodeString","ZwCreateKey","ZwQueryValueKey","PsTerminateSystemThread","KeWaitForSingleObject","KeSetSystemAffinityThread","KeSetPriorityThread","ObReferenceObjectByHandle","PsThreadType","PsCreateSystemThread","KeWaitForMultipleObjects","DbgPrint","MmFreeMappingAddress","MmAllocateMappingAddress","ProbeForRead","ExGetPreviousMode","KeTickCount","KeBugCheckEx","_allshl","memset","ObfDereferenceObject","ZwSetSecurityObject","ObOpenObjectByPointer","IoDeviceObjectType","IoCreateDevice","RtlUnwind","RtlGetDaclSecurityDescriptor","RtlGetSaclSecurityDescriptor","RtlGetGroupSecurityDescriptor","RtlGetOwnerSecurityDescriptor","_snwprintf","RtlLengthSecurityDescriptor","SeCaptureSecurityDescriptor","SeExports","_wcsnicmp","RtlAddAccessAllowedAce","RtlLengthSid","wcschr","RtlAbsoluteToSelfRelativeSD","RtlSetDaclSecurityDescriptor","RtlCreateSecurityDescriptor","ZwOpenKey","ZwSetValueKey","RtlFreeUnicodeString","ZwUnmapViewOfSection","ZwMapViewOfSection","ZwCreateSection","KfLowerIrql","KeGetCurrentIrql","KeRaiseIrqlToDpcLevel"],"Imports":["ntoskrnl.exe","HAL.dll"],"InternalName":"aswVmm.sys","MD5":"a5f637d61719d37a5b4868c385e363c0","MachineType":"I386","MagicHeader":"50 45 0 0","OriginalFilename":"aswVmm.sys","Product":"avast! Antivirus","ProductVersion":"8.0.1497.376","Publisher":"","RichPEHeaderHash":{"MD5":"32e18518c09e53f4f8e4f9522b0dae95","SHA1":"0ec193f3c2b5474347fca5c10fbb0ed72d6cd6fc","SHA256":"89ab793db2d8f113088473ba2431964d1103660a9475d1f93e5002710fd46ad8"},"SHA1":"34c85afe6d84cd3deec02c0a72e5abfa7a2886c3","SHA256":"36505921af5a09175395ebaea29c72b2a69a3a9204384a767a5be8a721f31b10","Sections":{".text":{"Entropy":6.435099675805003,"Virtual Size":"0x11bdc"},".rdata":{"Entropy":4.337653561530945,"Virtual Size":"0x3684"},".data":{"Entropy":2.248043192138036,"Virtual Size":"0xf0d0"},"PAGE":{"Entropy":6.275818990042088,"Virtual Size":"0x13dd"},"INIT":{"Entropy":5.497102312949239,"Virtual Size":"0xdc4"},".rsrc":{"Entropy":3.4097453831731763,"Virtual Size":"0x470"},".reloc":{"Entropy":6.2040113276427356,"Virtual Size":"0x2058"}},"Signature":["AVAST Software","VeriSign Class 3 Code Signing 2010 CA","VeriSign"],"Signatures":[{"CertificatesInfo":"","SignerInfo":"","Certificates":[{"Subject":"C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services CA , G2","ValidFrom":"2012-12-21 00:00:00","ValidTo":"2020-12-30 23:59:59","Signature":"03099b8f79ef7f5930aaef68b5fae3091dbb4f82065d375fa6529f168dea1c9209446ef56deb587c30e8f9698d23730b126f47a9ae3911f82ab19bb01ac38eeb599600adce0c4db2d031a6085c2a7afce27a1d574ca86518e979406225966ec7c7376a8321088e41eaddd9573f1d7749872a16065ea6386a2212a35119837eb6","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"7e93ebfb7cc64e59ea4b9a77d406fc3b","Version":3,"CertificateType":"CA","IsCodeSigning":false,"IsCA":true,"TBS":{"MD5":"d0785ad36e427c92b19f6826ab1e8020","SHA1":"365b7a9c21bd9373e49052c3e7b3e4646ddd4d43","SHA256":"c2abb7484da91a658548de089d52436175fdb760a1387d225611dc0613a1e2ff","SHA384":"eab4fe5ef90e0de4a6aa3a27769a5e879f588df5e4785aa4104debd1f81e19ea56d33e3a16e5facf99f68b5d8e3d287b"}},{"Subject":"C=US, O=Symantec Corporation, CN=Symantec Time Stamping Services Signer , G4","ValidFrom":"2012-10-18 00:00:00","ValidTo":"2020-12-29 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"0ecff438c8febf356e04d86a981b1a50","Version":3,"CertificateType":"Intermediate","IsCodeSigning":false,"IsCA":false,"TBS":{"MD5":"e9d38360b914c8863f6cba3ee58764d3","SHA1":"4cba8eae47b6bf76f20b3504b98b8f062694a89b","SHA256":"88901d86a4cc1f1bb193d08e1fb63d27452e63f83e228c657ab1a92e4ade3976","SHA384":"e9f2a75334a9e336c5a4712eadee88d0374b0fdc273262f4e65c9040ad2793067cc076696db5279a478773485e285652"}},{"Subject":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=(c) 2006 VeriSign, Inc. , For authorized use only, CN=VeriSign Class 3 Public Primary Certification Authority , G5","ValidFrom":"2006-11-08 00:00:00","ValidTo":"2021-11-07 23:59:59","Signature":"1302ddf8e88600f25af8f8200c59886207cecef74ef9bb59a198e5e138dd4ebc6618d3adeb18f20dc96d3e4a9420c33cbabd6554c6af44b310ad2c6b3eabd707b6b88163c5f95e2ee52a67cecd330c2ad7895603231fb3bee83a0859b4ec4535f78a5bff66cf50afc66d578d1978b7b9a2d157ea1f9a4bafbac98e127ec6bdff","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"250ce8e030612e9f2b89f7054d7cf8fd","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"918d9eb6a6cd36c531eceb926170a7e1","SHA1":"0ae95700d65e6f59715aa47048993ca7858e676a","SHA256":"47c46e6eaa3780eace3d0d891346cd373359d246b21a957219dbab4c8f37c166","SHA384":"e54017c93ba52f012cc15aeb3bcbce1e90a0006ff8dca231a24fc572926770f63213343f538003407bed3463fa9c4a85"}},{"Subject":"C=US, O=VeriSign, Inc., OU=Class 3 Public Primary Certification Authority","ValidFrom":"2006-05-23 17:01:29","ValidTo":"2016-05-23 17:11:29","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"610c120600000000001b","Version":3,"CertificateType":"Intermediate","IsCodeSigning":false,"IsCA":false,"TBS":{"MD5":"53c41bc1164e09e0cd1617a5bf913efd","SHA1":"93c03aac8951d494ecd5696b1c08658541b18727","SHA256":"40bddadac24dc61ca4fb5cab2a2bc5d876bc36808311039a7a3e1a4066f7489b","SHA384":"f51d4e75ba638f7314cd59b8d6d45f3b34d35ce6986e9d205cd6f333e8e8d8e9c91f636e6bc84731b6661673f40963d8"}},{"Subject":"C=CZ, ST=Praha, L=Praha 4, O=AVAST Software, OU=Digital ID Class 3 , Microsoft Software Validation v2, CN=AVAST Software","ValidFrom":"2011-01-31 00:00:00","ValidTo":"2014-01-30 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":false,"SerialNumber":"0dd6d671fe0364d43b632131417e7b3f","Version":3,"CertificateType":"Leaf (Code Signing)","IsCodeSigning":true,"IsCA":false,"TBS":{"MD5":"21d1d3208df2fa1d448ca0d6a7c3f767","SHA1":"8c1c5b83db485fb02a60c5637d7a0e7dd61386e9","SHA256":"efa85130741975dc47e84d0fe609aefcab90da0474420cef1c4002b032bd5d76","SHA384":"4246553acc05423f671b817d9c605f081132eced2149d8a0cb94b655721ad9c7cfc27744eb119d323e97084b805f21ef"}},{"Subject":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)10, CN=VeriSign Class 3 Code Signing 2010 CA","ValidFrom":"2010-02-08 00:00:00","ValidTo":"2020-02-07 23:59:59","Signature":"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","SignatureAlgorithmOID":"1.2.840.113549.1.1.5","IsCertificateAuthority":true,"SerialNumber":"5200e5aa2556fc1a86ed96c9d44b33c7","Version":3,"CertificateType":"CA","IsCodeSigning":true,"IsCA":true,"TBS":{"MD5":"b30c31a572b0409383ed3fbe17e56e81","SHA1":"4843a82ed3b1f2bfbee9671960e1940c942f688d","SHA256":"03cda47a6e654ed85d932714fc09ce4874600eda29ec6628cfbaeb155cab78c9","SHA384":"bbda8407c4f9fc4e54d772f1c7fb9d30bc97e1f97ecd51c443063d1fa0644e266328781776cd5c44896c457c75f4d7da"}}],"Signer":[{"SerialNumber":"0dd6d671fe0364d43b632131417e7b3f","Issuer":"C=US, O=VeriSign, Inc., OU=VeriSign Trust Network, OU=Terms of use at https://www.verisign.com/rpa (c)10, CN=VeriSign Class 3 Code Signing 2010 CA","Version":1}]}],"Imphash":"44e6f2f64092b48f8eb926c36ebd1d56","LoadsDespiteHVCI":"TRUE"}]}