accesschk64[.]exe

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General

Target

accesschk64.exe
Size

741KB
MD5

c27f6a5924afee4e483d07ba93eb463b
SHA1

a6ee062d336e5bc54b4627c6311a4ab5ed5bc9fe
SHA256

935c7fa03295ad59bdcbd593bbfb665a7609587139699249675eb073e6c1a7c6
SHA512

c8adf783b1cf67b0fb5048d599f166611ab1fec2d3fae4728d8329f400b910897f2548e4c61072b8802761717e7a7d34c137133e594982e60aba91ff7f88e2a9
SSDEEP

12288:MHsFHaST/ieTeiyqN3zw6+Ccx5q8YK9bzzNty5HD:b6AteHqN3zw6+Ccx5HpzzNty5HD

Score

1^/10

Malware Config

Signatures

Files

accesschk64.exe
.exe windows x64

1bc3bb6d746e8dbb7e0751b87205bb7d

Code Sign

33:00:00:01:df:6b:f0:2e:92:a7:4a:b4:d0:00:00:00:00:01:df
Certificate

Issuer

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

Not Before

15/12/2020, 21:31

Not After

02/12/2021, 21:31

Subject

CN=Microsoft Corporation,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

3d:10:93:7d:4b:18:c8:31:f3:a6:84:7f:f0:3b:1a:bf:4a:75:a7:59:b4:0f:90:62:7d:71:85:f5:70:92:84:64
Signer

Actual PE Digest

3d:10:93:7d:4b:18:c8:31:f3:a6:84:7f:f0:3b:1a:bf:4a:75:a7:59:b4:0f:90:62:7d:71:85:f5:70:92:84:64

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

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

23/03/2023, 16:11
Valid: false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

netapi32

NetShareEnum
NetShareGetInfo
NetApiBufferFree
NetUserGetLocalGroups

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW

kernel32

FindNextFileA
IsValidCodePage
GetOEMCP
GetCPInfo
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableA
SetEnvironmentVariableW
SetConsoleCtrlHandler
OutputDebugStringA
Thread32Next
Thread32First
OpenThread
FindNextFileW
FindFirstFileW
GetFileAttributesW
FindClose
GetProcessHeap
HeapAlloc
CreateFileW
FindResourceW
SizeofResource
LoadResource
LockResource
Process32NextW
Process32FirstW
CreateToolhelp32Snapshot
GetFullPathNameW
GetCurrentDirectoryW
ExpandEnvironmentStringsW
LoadLibraryW
FormatMessageW
CloseHandle
GetLastError
GetCurrentThread
GetCurrentProcess
OpenProcess
GetVersion
RtlUnwind
GetModuleFileNameW
GetCommandLineW
GetModuleHandleW
GetStdHandle
GetFileType
LocalFree
LocalAlloc
GetProcAddress
GetVersionExW
LoadLibraryExW
SetLastError
OutputDebugStringW
WaitForSingleObjectEx
CreateThread
WriteConsoleW
SetFilePointerEx
ReadConsoleW
HeapSize
SetEndOfFile
FindFirstFileExW
FindFirstFileExA
GetStringTypeW
HeapReAlloc
ReadFile
GetConsoleCP
FlushFileBuffers
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlPcToFileHeader
RaiseException
RtlUnwindEx
InterlockedPushEntrySList
InterlockedFlushSList
EncodePointer
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
ExitProcess
GetModuleHandleExW
GetConsoleMode
GetNumberOfConsoleInputEvents
PeekConsoleInputA
ReadConsoleInputA
SetConsoleMode
SetStdHandle
GetModuleFileNameA
MultiByteToWideChar
WideCharToMultiByte
WriteFile
GetCommandLineA
GetACP
HeapFree
GetDateFormatW
GetTimeFormatW
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW

user32

SendMessageW
LoadCursorW
InflateRect
GetSysColorBrush
SetCursor
SetWindowTextW
GetDlgItem
EndDialog
DialogBoxIndirectParamW

gdi32

StartDocW
EndDoc
StartPage
EndPage
SetMapMode
GetDeviceCaps

comdlg32

PrintDlgW

advapi32

LookupPrivilegeDisplayNameW
QueryServiceObjectSecurity
OpenServiceW
OpenSCManagerW
EnumServicesStatusW
CloseServiceHandle
GetSecurityInfo
DeleteAce
RegGetKeySecurity
RegEnumKeyW
GetNamedSecurityInfoW
ConvertStringSecurityDescriptorToSecurityDescriptorW
RegDeleteKeyW
GetKernelObjectSecurity
LsaNtStatusToWinError
LsaEnumerateAccountRights
LsaEnumerateAccountsWithUserRight
LsaOpenPolicy
LsaClose
LsaFreeMemory
LookupPrivilegeNameW
ConvertSecurityDescriptorToStringSecurityDescriptorW
GetEffectiveRightsFromAclW
SetEntriesInAclW
DuplicateTokenEx
ImpersonateLoggedOnUser
LookupPrivilegeValueW
LookupAccountNameW
LookupAccountSidW
GetSecurityDescriptorOwner
SetSecurityDescriptorOwner
GetSecurityDescriptorSacl
GetSecurityDescriptorDacl
SetSecurityDescriptorDacl
GetSecurityDescriptorControl
InitializeSecurityDescriptor
GetAce
CopySid
GetLengthSid
GetSidSubAuthorityCount
GetSidSubAuthority
GetSidIdentifierAuthority
AllocateAndInitializeSid
EqualSid
IsValidSid
IsWellKnownSid
AdjustTokenPrivileges
GetTokenInformation
OpenThreadToken
OpenProcessToken
RevertToSelf
RegSetValueExW
RegQueryValueExW
RegOpenKeyExW
RegOpenKeyW
RegCreateKeyW
RegCloseKey

wevtapi

EvtOpenChannelEnum
EvtNextChannelPath
EvtOpenChannelConfig
EvtGetChannelConfigProperty
EvtClose

Sections

.text
Size: 421KB - Virtual size: 421KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 127KB - Virtual size: 126KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 139KB - Virtual size: 146KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 23KB - Virtual size: 23KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

1bc3bb6d746e8dbb7e0751b87205bb7d

Code Sign

33:00:00:01:df:6b:f0:2e:92:a7:4a:b4:d0:00:00:00:00:01:dfCertificate

Extended Key Usages

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

Key Usages

3d:10:93:7d:4b:18:c8:31:f3:a6:84:7f:f0:3b:1a:bf:4a:75:a7:59:b4:0f:90:62:7d:71:85:f5:70:92:84:64Signer

Signature Validations

Verification

23/03/2023, 16:11 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

netapi32

version

kernel32

user32

gdi32

comdlg32

advapi32

wevtapi

Sections

.text Size: 421KB - Virtual size: 421KB

.rdata Size: 127KB - Virtual size: 126KB

.data Size: 139KB - Virtual size: 146KB

.pdata Size: 23KB - Virtual size: 23KB

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

.reloc Size: 2KB - Virtual size: 2KB

33:00:00:01:df:6b:f0:2e:92:a7:4a:b4:d0:00:00:00:00:01:df
Certificate

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

3d:10:93:7d:4b:18:c8:31:f3:a6:84:7f:f0:3b:1a:bf:4a:75:a7:59:b4:0f:90:62:7d:71:85:f5:70:92:84:64
Signer

23/03/2023, 16:11
Valid: false

.text
Size: 421KB - Virtual size: 421KB

.rdata
Size: 127KB - Virtual size: 126KB

.data
Size: 139KB - Virtual size: 146KB

.pdata
Size: 23KB - Virtual size: 23KB

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

.reloc
Size: 2KB - Virtual size: 2KB