avrt[.]dll | Triage

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General

Target

avrt.dll
Size

34KB
MD5

05bb1f5bcc63322f6ddb07e277936609
SHA1

465624815649ef04f480964af234d073b8d135dc
SHA256

936ac4a237ec46f26865a84ea7fb9cea7ed099648b7dc2d699332ef8e0b942a9
SHA512

e2bc431802f7f10289a4abda75230acd8a16dab4fab0b90c61168228a0a63e5335b692d951b0aa56b1e7628f0e8cf4eed9a89d9dfd3501d4fcf5bd1cc764e844
SSDEEP

384:iyPpmkMqLSJfLSiJcpR7zKDfBmoGZfUiz4eTrw/Txh+rG6g9CMIW0oWx7QZUDBRb:htMqLSJ+ndzhtTiTx+Gj9MXQ61Phwri

Score

1^/10

Malware Config

Signatures

Files

avrt.dll
.dll windows:6 windows x64 arch:x64

330d8d29ad831acbe4a61af04f5d6b15

Code Sign

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4e
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

01/07/2014, 20:32

Not After

01/10/2015, 20:32

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

36:7e:41:97:87:ec:34:94:a0:41:ab:16:36:22:6a:a2:23:33:7c:28:a4:b3:bc:ab:1d:ea:7d:1e:cf:01:10:83
Signer

Actual PE Digest

36:7e:41:97:87:ec:34:94:a0:41:ab:16:36:22:6a:a2:23:33:7c:28:a4:b3:bc:ab:1d:ea:7d:1e:cf:01:10:83

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

avrt.pdb

Imports

ntdll

NtWaitForSingleObject
NtAlpcSendWaitReceivePort
RtlEncodePointer
RtlDecodePointer
NtSetEvent
NtDelayExecution
AlpcInitializeMessageAttribute
AlpcGetMessageAttribute
RtlAllocateAndInitializeSid
RtlFreeSid
NtQueryValueKey
NtOpenKey
NtAlpcConnectPort
RtlDeleteBoundaryDescriptor
NtOpenEvent
NtOpenPrivateNamespace
RtlAddSIDToBoundaryDescriptor
RtlCreateBoundaryDescriptor
RtlSubAuthoritySid
RtlInitializeSid
RtlCreateServiceSid
RtlLengthRequiredSid
RtlInitUnicodeStringEx
RtlNtStatusToDosError
NtClose
NtSetInformationThread
RtlFreeHeap
RtlMultiByteToUnicodeN
RtlAllocateHeap
RtlMultiByteToUnicodeSize
RtlUnhandledExceptionFilter
RtlLookupFunctionEntry
RtlVirtualUnwind
RtlCaptureContext
NtTerminateProcess
NtCreateEvent
__C_specific_handler
memset

api-ms-win-eventing-classicprovider-l1-1-0

GetTraceLoggerHandle
GetTraceEnableLevel
GetTraceEnableFlags
TraceMessage
RegisterTraceGuidsW
UnregisterTraceGuids

api-ms-win-core-processthreads-l1-1-2

GetCurrentProcess
OpenProcessToken

api-ms-win-core-errorhandling-l1-1-1

GetLastError

api-ms-win-security-base-l1-2-0

GetTokenInformation

api-ms-win-core-handle-l1-1-0

CloseHandle

api-ms-win-core-synch-l1-2-0

InitOnceExecuteOnce

api-ms-win-service-management-l1-1-0

CloseServiceHandle
OpenServiceW
OpenSCManagerW
StartServiceW

api-ms-win-core-delayload-l1-1-1

ResolveDelayLoadedAPI
DelayLoadFailureHook

Exports

Exports

AvQuerySystemResponsiveness
AvRevertMmThreadCharacteristics
AvRtCreateThreadOrderingGroup
AvRtCreateThreadOrderingGroupExA
AvRtCreateThreadOrderingGroupExW
AvRtDeleteThreadOrderingGroup
AvRtJoinThreadOrderingGroup
AvRtLeaveThreadOrderingGroup
AvRtWaitOnThreadOrderingGroup
AvSetMmMaxThreadCharacteristicsA
AvSetMmMaxThreadCharacteristicsW
AvSetMmThreadCharacteristicsA
AvSetMmThreadCharacteristicsW
AvSetMmThreadPriority

Sections

.text
Size: 18KB - Virtual size: 17KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 24B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 1016B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 64B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

330d8d29ad831acbe4a61af04f5d6b15

Code Sign

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4eCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

36:7e:41:97:87:ec:34:94:a0:41:ab:16:36:22:6a:a2:23:33:7c:28:a4:b3:bc:ab:1d:ea:7d:1e:cf:01:10:83Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntdll

api-ms-win-eventing-classicprovider-l1-1-0

api-ms-win-core-processthreads-l1-1-2

api-ms-win-core-errorhandling-l1-1-1

api-ms-win-security-base-l1-2-0

api-ms-win-core-handle-l1-1-0

api-ms-win-core-synch-l1-2-0

api-ms-win-service-management-l1-1-0

api-ms-win-core-delayload-l1-1-1

Exports

Exports

Sections

.text Size: 18KB - Virtual size: 17KB

.data Size: 512B - Virtual size: 1KB

.pdata Size: 1KB - Virtual size: 1KB

.idata Size: 3KB - Virtual size: 2KB

.didat Size: 512B - Virtual size: 24B

.rsrc Size: 1024B - Virtual size: 1016B

.reloc Size: 512B - Virtual size: 64B

33:00:00:00:4e:a1:d8:07:70:a9:bb:e9:44:00:00:00:00:00:4e
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

36:7e:41:97:87:ec:34:94:a0:41:ab:16:36:22:6a:a2:23:33:7c:28:a4:b3:bc:ab:1d:ea:7d:1e:cf:01:10:83
Signer

.text
Size: 18KB - Virtual size: 17KB

.data
Size: 512B - Virtual size: 1KB

.pdata
Size: 1KB - Virtual size: 1KB

.idata
Size: 3KB - Virtual size: 2KB

.didat
Size: 512B - Virtual size: 24B

.rsrc
Size: 1024B - Virtual size: 1016B

.reloc
Size: 512B - Virtual size: 64B