nethost[.]dll | Triage

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General

Target

nethost.dll
Size

102KB
MD5

531c002fa808cbb1de1f667ebb5d310e
SHA1

200c599bf8263f2b861666841a78122bccc9f6c4
SHA256

5720b3c57bb17e76abdf44a35e92e1cd41cb1895f826bd8a3310da63823e7636
SHA512

a8ea5fd177f6a760ee60af64de2b58566b666103ff0a1ebe2f26ce35fb4d94e8a33e9bf2bb3a4f9532dc612ba1a1ffb752e59c5751ae70a90b95066be9c4384d
SSDEEP

1536:wvR/4cLQ268s8epmdQ1Z0R2Fl1u8Dk9ZG3n1u2oWUi6UzJ:wvqcc268sO23M8Dk9yn42oWUud

Score

1^/10

Malware Config

Signatures

Files

nethost.dll
.dll windows:6 windows x64 arch:x64

e387a4f3f0270984a8b8da0abcec99c5

Code Sign

33:00:00:03:d3:76:69:dc:80:ec:01:a2:43:00:00:00:00:03:d3
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

22/02/2024, 20:25

Not After

19/02/2025, 20:25

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

5b:78:38:3c:b9:64:18:ae:38:80:82:57:85:ae:43:cd:05:9e:12:f4:0e:f4:70:6a:b8:79:53:f5:5f:e9:13:c4
Signer

Actual PE Digest

5b:78:38:3c:b9:64:18:ae:38:80:82:57:85:ae:43:cd:05:9e:12:f4:0e:f4:70:6a:b8:79:53:f5:5f:e9:13:c4

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

D:\a\_work\1\s\artifacts\obj\win-x64.Release\corehost\nethost\nethost.pdb

Imports

kernel32

GetFullPathNameW
FindNextFileW
GetCurrentProcess
GetModuleFileNameW
GetEnvironmentVariableW
FindClose
FindFirstFileExW
GetFileAttributesExW
LoadLibraryA
GetProcAddress
DeleteCriticalSection
GetModuleHandleW
IsWow64Process
LoadLibraryExW
FreeLibrary
GetLastError
OutputDebugStringW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSectionAndSpinCount
EncodePointer
SetLastError
InterlockedFlushSList
RaiseException
RtlPcToFileHeader
RtlUnwindEx
InitializeSListHead
GetCurrentProcessId
IsDebuggerPresent
IsProcessorFeaturePresent
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
SwitchToThread
GetCurrentThreadId
QueryPerformanceCounter
InitializeCriticalSectionEx
GetSystemTimeAsFileTime

advapi32

RegOpenKeyExW
RegGetValueW
RegCloseKey

api-ms-win-crt-runtime-l1-1-0

_errno
_execute_onexit_table
_crt_atexit
_initialize_onexit_table
_initialize_narrow_environment
_configure_narrow_argv
_seh_filter_dll
_cexit
_initterm
abort
_initterm_e
_invalid_parameter_noinfo_noreturn
terminate
_register_onexit_function

api-ms-win-crt-stdio-l1-1-0

_wfsopen
__acrt_iob_func
fputwc
fputws
__stdio_common_vfwprintf
__stdio_common_vsnwprintf_s
__stdio_common_vswprintf
setvbuf

api-ms-win-crt-string-l1-1-0

wcsncmp
strcpy_s
toupper

api-ms-win-crt-convert-l1-1-0

wcstoul
_wtoi

api-ms-win-crt-time-l1-1-0

_gmtime64_s
wcsftime
_time64

api-ms-win-crt-heap-l1-1-0

calloc
_callnewh
free
malloc

Exports

Exports

get_hostfxr_path

Sections

.text
Size: 62KB - Virtual size: 62KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 22KB - Virtual size: 21KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 3KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 416B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e387a4f3f0270984a8b8da0abcec99c5

Code Sign

33:00:00:03:d3:76:69:dc:80:ec:01:a2:43:00:00:00:00:03:d3Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

5b:78:38:3c:b9:64:18:ae:38:80:82:57:85:ae:43:cd:05:9e:12:f4:0e:f4:70:6a:b8:79:53:f5:5f:e9:13:c4Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-crt-convert-l1-1-0

api-ms-win-crt-time-l1-1-0

api-ms-win-crt-heap-l1-1-0

Exports

Exports

Sections

.text Size: 62KB - Virtual size: 62KB

.rdata Size: 22KB - Virtual size: 21KB

.data Size: 1024B - Virtual size: 3KB

.pdata Size: 3KB - Virtual size: 3KB

_RDATA Size: 512B - Virtual size: 500B

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

.reloc Size: 512B - Virtual size: 416B

33:00:00:03:d3:76:69:dc:80:ec:01:a2:43:00:00:00:00:03:d3
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

5b:78:38:3c:b9:64:18:ae:38:80:82:57:85:ae:43:cd:05:9e:12:f4:0e:f4:70:6a:b8:79:53:f5:5f:e9:13:c4
Signer

.text
Size: 62KB - Virtual size: 62KB

.rdata
Size: 22KB - Virtual size: 21KB

.data
Size: 1024B - Virtual size: 3KB

.pdata
Size: 3KB - Virtual size: 3KB

_RDATA
Size: 512B - Virtual size: 500B

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

.reloc
Size: 512B - Virtual size: 416B