avrt[.]dll | Triage

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General

Target

avrt.dll
Size

27KB
MD5

fd6eb4b72d967811bb987b3161be5387
SHA1

4811196ca86e511d31cce1ffed042001f27b4aa3
SHA256

fc5942e7308caa1e6389e655c386be2f184a50ee3a6750adc0f5ba2b202d521b
SHA512

fbe8e07e2492d5b81282a00af95380338194d56385075e62bc37194c387806f151fe884548a3bd65061ed4d018e8d6b80c9b6f72a360de2a0091c976697f6241
SSDEEP

384:yb6DM9dpKshxqW5WW2oWx3T7pOlW/IFDBRJY+Hj+R9z3CG:y9DKi5+/7Ih1PHHji9z

Score

1^/10

Malware Config

Signatures

Files

avrt.dll
.dll windows:10 windows x86 arch:x86

95a7e62f0b2e2596fa0e286d442d690a

Code Sign

33:00:00:04:15:82:95:a1:a3:d8:2e:28:57:00:00:00:00:04:15
Certificate

Issuer

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

Not Before

03/02/2023, 00:05

Not After

01/02/2024, 00:05

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

27:6c:84:e6:fa:c9:6e:bc:f0:7f:12:3a:44:6f:44:c1:4e:d7:92:af:68:5c:8d:f5:9a:d2:19:61:c1:1d:a1:8d
Signer

Actual PE Digest

27:6c:84:e6:fa:c9:6e:bc:f0:7f:12:3a:44:6f:44:c1:4e:d7:92:af:68:5c:8d:f5:9a:d2:19:61:c1:1d:a1:8d

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_NO_SEH
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

avrt.pdb

Imports

ntdll

NtCreateFile
RtlUnhandledExceptionFilter
NtTerminateProcess
NtDeviceIoControlFile
LdrDisableThreadCalloutsForDll
RtlMultiByteToUnicodeN
RtlNtStatusToDosError
NtClose
NtSetInformationThread

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

TraceMessage
GetTraceEnableLevel
RegisterTraceGuidsW
GetTraceEnableFlags
GetTraceLoggerHandle
UnregisterTraceGuids

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

SetLastError
GetLastError

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

RegQueryValueExW
RegOpenKeyExW
RegCloseKey

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

OpenServiceW
CloseServiceHandle
OpenSCManagerW
StartServiceW

Exports

Exports

AvCreateTaskIndex
AvQuerySystemResponsiveness
AvQueryTaskIndexValue
AvRevertMmThreadCharacteristics
AvRtCreateThreadOrderingGroup
AvRtCreateThreadOrderingGroupExA
AvRtCreateThreadOrderingGroupExW
AvRtDeleteThreadOrderingGroup
AvRtJoinThreadOrderingGroup
AvRtLeaveThreadOrderingGroup
AvRtWaitOnThreadOrderingGroup
AvSetMmMaxThreadCharacteristicsA
AvSetMmMaxThreadCharacteristicsW
AvSetMmThreadCharacteristicsA
AvSetMmThreadCharacteristicsW
AvSetMmThreadPriority
AvSetMultimediaMode
AvTaskIndexYield
AvTaskIndexYieldCancel
AvThreadOpenTaskIndex

Sections

.text
Size: 6KB - Virtual size: 6KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 908B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 356B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

95a7e62f0b2e2596fa0e286d442d690a

Code Sign

33:00:00:04:15:82:95:a1:a3:d8:2e:28:57:00:00:00:00:04:15Certificate

Extended Key Usages

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

Key Usages

27:6c:84:e6:fa:c9:6e:bc:f0:7f:12:3a:44:6f:44:c1:4e:d7:92:af:68:5c:8d:f5:9a:d2:19:61:c1:1d:a1:8dSigner

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntdll

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

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

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

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

Exports

Exports

Sections

.text Size: 6KB - Virtual size: 6KB

.data Size: 512B - Virtual size: 908B

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

.rsrc Size: 8KB - Virtual size: 7KB

.reloc Size: 512B - Virtual size: 356B

33:00:00:04:15:82:95:a1:a3:d8:2e:28:57:00:00:00:00:04:15
Certificate

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

27:6c:84:e6:fa:c9:6e:bc:f0:7f:12:3a:44:6f:44:c1:4e:d7:92:af:68:5c:8d:f5:9a:d2:19:61:c1:1d:a1:8d
Signer

.text
Size: 6KB - Virtual size: 6KB

.data
Size: 512B - Virtual size: 908B

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

.rsrc
Size: 8KB - Virtual size: 7KB

.reloc
Size: 512B - Virtual size: 356B