catsrvut[.]dll

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General

Target

catsrvut.dll
Size

511KB
MD5

b0fdf096248ba13d9c1adaa324e2a75a
SHA1

ec97b39734531a90db972e329ceac5b2bf1839e5
SHA256

b9bfd2dc4d6943861d12f3b0fc0c85d128c17591a5e7d1ede23b4b5ef2e0757b
SHA512

4e8b149ab826ba5a44585437dc3df1fd39a9ecf8c22db9919140ea4e5c4a70d6dde8db3b7af364fd629ea3347489aa53772975a52e73ab43651bc96885291f4a
SSDEEP

12288:fGYQctxDD0GiGT3Maed9w5cXHW8jIvLL:HMaec5cXSLL

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
catsrvut.dll

Files

catsrvut.dll
.dll regsvr32 windows:6 windows x64 arch:x64

78282d016a4fb755d59f69a6fbd8e71f

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

catsrvut.pdb

Imports

msvcrt

memset
memcpy
_onexit
wcsncmp
_wstrtime
towupper
_itow
_wstrdate
__dllonexit
iswprint
memcmp
_unlock
_local_unwind
__isascii
__CxxFrameHandler3
_lock
?terminate@@YAXXZ
__C_specific_handler
_initterm
_amsg_exit
_XcptFilter
_wcsnicmp
_ltow
_waccess
_vsnwprintf
_wcsicmp
_purecall
iswspace
wcsrchr
wcschr
wcscpy_s
realloc
wcscat_s
free
malloc
wcscmp

ntdll

WinSqmSetDWORD
RtlGetVersion
RtlImageNtHeader
RtlAllocateHeap
RtlFreeHeap
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext

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

OpenEventW
Sleep
InitializeCriticalSection
OpenMutexW
InitializeCriticalSectionAndSpinCount
ReleaseMutex
SetEvent
CreateEventW
DeleteCriticalSection
EnterCriticalSection
WaitForSingleObject
LeaveCriticalSection

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

WideCharToMultiByte
MultiByteToWideChar
CompareStringW

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

LockResource
GetModuleFileNameW
SizeofResource
LoadResource
GetModuleHandleW
GetModuleHandleExW
LoadLibraryExW
LoadStringW
DisableThreadLibraryCalls
FreeLibrary
FindResourceExW
FreeLibraryAndExitThread
GetProcAddress

api-ms-win-core-com-l1-1-1

CoGetObjectContext
StringFromGUID2
CLSIDFromString
CoTaskMemFree
CoCreateInstance
CoRevertToSelf
CoInitializeEx
CoTaskMemRealloc
CoCreateInstanceEx
StringFromIID
CoUninitialize
IIDFromString
CoImpersonateClient
CoGetCallContext
StringFromCLSID
CoCreateGuid
CoTaskMemAlloc

api-ms-win-core-string-l2-1-0

CharNextW
CharPrevW

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

SetErrorMode
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetLastError

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

RegSetValueExW
RegDeleteTreeW
RegEnumValueW
RegCreateKeyExW
RegOpenKeyExW
RegQueryValueExW
RegEnumKeyExW
RegQueryInfoKeyW
RegCloseKey
RegFlushKey
RegDeleteValueW

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

GetSystemDirectoryW
GetSystemTimeAsFileTime
GetTickCount
GetVersionExW
GetSystemInfo
GetLocalTime

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

VirtualQuery
MapViewOfFile
UnmapViewOfFile
VirtualAlloc
VirtualProtect
CreateFileMappingW
OpenFileMappingW

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

CloseHandle

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

HeapDestroy

api-ms-win-core-debug-l1-1-1

DebugBreak
OutputDebugStringA
IsDebuggerPresent
OutputDebugStringW

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

OpenThreadToken
CreateProcessW
OpenProcessToken
CreateProcessAsUserW
TerminateProcess
GetCurrentProcessId
CreateThread
GetCurrentThreadId
GetCurrentThread
GetCurrentProcess
GetThreadContext
ExitProcess
SetThreadToken
GetExitCodeProcess
SetThreadStackGuarantee

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

FormatMessageW

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

FindClose
GetShortPathNameW
CreateFileW
SetFileAttributesW
DeleteFileW
FindNextFileW
FindFirstFileW
CreateDirectoryW
GetLongPathNameW

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

OpenServiceW
CreateServiceW
DeleteService
CloseServiceHandle
OpenSCManagerW

api-ms-win-service-winsvc-l1-2-0

ControlService

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

InitializeSecurityDescriptor
AllocateLocallyUniqueId
IsValidSid
CheckTokenMembership
CreateWellKnownSid
AdjustTokenPrivileges
GetSidLengthRequired
DestroyPrivateObjectSecurity
GetSecurityDescriptorLength
CreatePrivateObjectSecurityEx
AddAce
IsValidSecurityDescriptor
GetSecurityDescriptorDacl
GetSidSubAuthority
IsWellKnownSid
GetSidSubAuthorityCount
AllocateAndInitializeSid
FreeSid
SetSecurityDescriptorDacl
AddAccessAllowedAce
DuplicateTokenEx
InitializeAcl
GetTokenInformation
GetLengthSid
CopySid
EqualSid

api-ms-win-service-management-l2-1-0

ChangeServiceConfig2W
ChangeServiceConfigW
QueryServiceConfigW

api-ms-win-core-file-l2-1-1

CopyFileExW

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

ExpandEnvironmentStringsW

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

QueryPerformanceCounter

kernel32

lstrcpynW
lstrcpyW
LoadLibraryW
WaitForMultipleObjects
OpenFile
LocalSize
GetSystemWow64DirectoryW
LocalAlloc
lstrcmpiW
LocalReAlloc
lstrlenW
LocalFree
GetComputerNameW

advapi32

SaferSetLevelInformation
ReportEventW
DeregisterEventSource
RegisterEventSourceW
RegConnectRegistryW
BuildTrusteeWithSidW
LsaLookupNames
BuildSecurityDescriptorW
BuildTrusteeWithNameW
SaferGetLevelInformation
SaferCreateLevel
SaferCloseLevel
RegDeleteKeyW
RegOverridePredefKey
RegCreateKeyW
SaferIdentifyLevel

mfcsubs

??H@YA?AVCString@@AEBV0@PEBG@Z
??H@YA?AVCString@@AEBV0@0@Z
??YCString@@QEAAAEBV0@AEBV0@@Z
??0CString@@QEAA@PEBD@Z
??4CString@@QEAAAEBV0@PEBG@Z
??0CString@@QEAA@PEBG@Z
??1CString@@QEAA@XZ
??4CString@@QEAAAEBV0@AEBV0@@Z
??0CString@@QEAA@XZ

api-ms-win-security-sddl-l1-1-0

ConvertStringSidToSidW
ConvertSidToStringSidW

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

VerQueryValueW

api-ms-win-core-com-private-l1-1-0

CoGetModuleType
UpdateDCOMSettings

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

DelayLoadFailureHook
ResolveDelayLoadedAPI

api-ms-win-core-shlwapi-legacy-l1-1-0

PathStripPathW

Exports

Exports

??0CComPlusComponent@@QEAA@AEBV0@@Z
??0CComPlusInterface@@QEAA@AEBV0@@Z
??0CComPlusMethod@@QEAA@AEBV0@@Z
??0CComPlusObject@@QEAA@AEBV0@@Z
??1CComPlusComponent@@UEAA@XZ
??1CComPlusInterface@@UEAA@XZ
??4CComPlusComponent@@QEAAAEAV0@AEBV0@@Z
??4CComPlusInterface@@QEAAAEAV0@AEBV0@@Z
??4CComPlusMethod@@QEAAAEAV0@AEBV0@@Z
??4CComPlusObject@@QEAAAEAV0@AEBV0@@Z
??4CComPlusTypelib@@QEAAAEAV0@AEBV0@@Z
??_7CComPlusComponent@@6B@
??_7CComPlusInterface@@6B@
??_7CComPlusMethod@@6B@
??_7CComPlusObject@@6B@
?GetITypeLib@CComPlusTypelib@@QEAAPEAUITypeLib@@XZ
CGMIsAdministrator
COMPlusUninstallActionW
CreateComRegDBWriter
DestroyComRegDBWriter
DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer
FindAssemblyModulesW
ManagedRequestW
QueryUserDllW
RegDBBackup
RegDBRestore
RunMTSToCom
StartMTSTOCOM
SysprepComplus
SysprepComplus2
WinlogonHandlePendingInfOperations

Sections

.text
Size: 465KB - Virtual size: 465KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 11KB - Virtual size: 20KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 10KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 1024B - Virtual size: 560B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

78282d016a4fb755d59f69a6fbd8e71f

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

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

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

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

api-ms-win-core-com-l1-1-1

api-ms-win-core-string-l2-1-0

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

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

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

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

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

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

api-ms-win-core-debug-l1-1-1

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

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

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

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

api-ms-win-service-winsvc-l1-2-0

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

api-ms-win-service-management-l2-1-0

api-ms-win-core-file-l2-1-1

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

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

kernel32

advapi32

mfcsubs

api-ms-win-security-sddl-l1-1-0

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

api-ms-win-core-com-private-l1-1-0

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

api-ms-win-core-shlwapi-legacy-l1-1-0

Exports

Exports

Sections

.text Size: 465KB - Virtual size: 465KB

.data Size: 11KB - Virtual size: 20KB

.pdata Size: 12KB - Virtual size: 11KB

.idata Size: 10KB - Virtual size: 10KB

.didat Size: 1024B - Virtual size: 560B

.rsrc Size: 4KB - Virtual size: 3KB

.reloc Size: 6KB - Virtual size: 5KB

.text
Size: 465KB - Virtual size: 465KB

.data
Size: 11KB - Virtual size: 20KB

.pdata
Size: 12KB - Virtual size: 11KB

.idata
Size: 10KB - Virtual size: 10KB

.didat
Size: 1024B - Virtual size: 560B

.rsrc
Size: 4KB - Virtual size: 3KB

.reloc
Size: 6KB - Virtual size: 5KB