catsrvut[.]dll

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General

Target

catsrvut.dll
Size

476KB
MD5

e25640558e3ee4fe6201a9928990ba2a
SHA1

fdbad46be0353536a57c6af37a8f9c289d826a1e
SHA256

2f0049e6903efbc3e749bf4f9217c9aae8389881882b1bddf5aa58720234dbaf
SHA512

9e9221ba152c4fedd05867c33ddc69b194f9daabc68f286c042fcd62b7e9ba4f2ec7ff2b194539c4b7f753679c1b5025ba19b1d29359c7946f885b4159502fdd
SSDEEP

6144:JhZgzGKwX/BxofAjvje1Y4fjvxbviCkPdzXogNeiDf6KXntTSJDVTKBO0gK+QNDL:+STCq4LJb6CkPFPUefFMK+QNDAyP3Ye

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 x86 arch:x86

ba857af8dfb93e0d23cb222d07d8443d

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

catsrvut.pdb

Imports

msvcrt

_lock
__dllonexit
_unlock
_except_handler4_common
?terminate@@YAXXZ
_amsg_exit
_initterm
_XcptFilter
_wcsnicmp
_waccess
_ltow
_vsnwprintf
_wcsicmp
_purecall
wcsrchr
iswspace
memcpy
realloc
_onexit
wcsncmp
_local_unwind4
_wstrtime
_wstrdate
free
malloc
__CxxFrameHandler3
memset
wcschr
iswprint
__isascii
_itow
towupper

mfcsubs

??H@YG?AVCString@@ABV0@PBG@Z
??0CString@@QAE@PBG@Z
??1CString@@QAE@XZ
??0CString@@QAE@XZ
??0CString@@QAE@PBD@Z
??YCString@@QAEABV0@ABV0@@Z
??4CString@@QAEABV0@PBG@Z
??H@YG?AVCString@@PBGABV0@@Z
??4CString@@QAEABV0@ABV0@@Z

ole32

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

kernel32

MapViewOfFile
OpenFileMappingW
FreeLibrary
LoadLibraryExW
SetErrorMode
lstrcmpiW
FreeLibraryAndExitThread
UnmapViewOfFile
SetEvent
WaitForSingleObject
CreateThread
GetModuleHandleExW
CreateEventW
HeapDestroy
lstrcpynW
GetModuleFileNameW
ExitProcess
lstrcatW
GetExitCodeProcess
CreateProcessW
GetSystemDirectoryW
lstrlenA
SizeofResource
LoadResource
FindResourceW
OpenEventW
FormatMessageW
WaitForMultipleObjects
GetShortPathNameW
DelayLoadFailureHook
InterlockedCompareExchange
LoadLibraryExA
LocalFree
TerminateProcess
GetCurrentProcess
CreateFileMappingW
GetCurrentThread
CreateDirectoryW
FindClose
FindFirstFileW
FindNextFileW
GetComputerNameW
SetFileAttributesW
CopyFileW
GetLongPathNameW
DeleteFileW
ExpandEnvironmentStringsW
InitializeCriticalSectionAndSpinCount
InterlockedExchange
QueryPerformanceCounter
GetTickCount
GetCurrentThreadId
GetCurrentProcessId
GetSystemTimeAsFileTime
UnhandledExceptionFilter
SetUnhandledExceptionFilter
LocalAlloc
LocalSize
LocalReAlloc
CompareStringW
CreateFileW
WideCharToMultiByte
OpenFile
LockResource
GetLocalTime
DebugBreak
GetThreadContext
IsDebuggerPresent
OutputDebugStringW
ReleaseMutex
OpenMutexW
GetVersion
CloseHandle
DisableThreadLibraryCalls
GetModuleHandleW
GetProcAddress
LoadLibraryW
InterlockedDecrement
InterlockedIncrement
InitializeCriticalSection
GetLastError
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
lstrcpyW
lstrlenW
MultiByteToWideChar
VirtualQuery
GetSystemInfo
VirtualAlloc
VirtualProtect
GetVersionExW
Sleep

advapi32

SaferCreateLevel
SaferSetLevelInformation
SaferIdentifyLevel
SaferGetLevelInformation
SaferCloseLevel
SetThreadToken
RegisterEventSourceW
ReportEventW
DeregisterEventSource
DeleteService
CreateServiceW
ChangeServiceConfig2W
ChangeServiceConfigW
RegFlushKey
RegConnectRegistryW
LogonUserW
LsaRetrievePrivateData
LsaStorePrivateData
LsaRemoveAccountRights
LsaEnumerateAccountRights
LsaAddAccountRights
IsValidSecurityDescriptor
GetSecurityDescriptorLength
CreatePrivateObjectSecurityEx
DestroyPrivateObjectSecurity
BuildTrusteeWithSidW
LsaLookupNames
GetSidSubAuthorityCount
GetSidLengthRequired
GetSidSubAuthority
ConvertSidToStringSidW
IsWellKnownSid
GetSecurityDescriptorDacl
AddAce
AddAccessAllowedAce
BuildTrusteeWithNameW
BuildSecurityDescriptorW
InitializeAcl
ConvertStringSidToSidW
LsaOpenPolicy
LsaQueryInformationPolicy
LsaClose
LsaFreeMemory
AllocateAndInitializeSid
FreeSid
OpenProcessToken
AdjustTokenPrivileges
RegQueryValueExW
LookupAccountSidW
GetLengthSid
CopySid
LookupAccountNameW
EqualSid
AllocateLocallyUniqueId
IsValidSid
CreateWellKnownSid
CheckTokenMembership
QueryServiceConfigW
OpenThreadToken
DuplicateTokenEx
GetTokenInformation
SetEntriesInAclW
InitializeSecurityDescriptor
SetSecurityDescriptorDacl
ControlService
OpenSCManagerW
OpenServiceW
CloseServiceHandle
RegDeleteKeyW
RegEnumKeyExW
RegEnumValueW
RegQueryInfoKeyW
RegOverridePredefKey
RegDeleteTreeW
RegCreateKeyW
RegSetValueExW
RegOpenKeyExW
RegCreateKeyExW
RegCloseKey
RegDeleteValueW
CreateProcessAsUserW

user32

SetWindowPos
MapWindowPoints
GetClientRect
GetWindowRect
GetDesktopWindow
SetThreadDesktop
OpenDesktopW
SetProcessWindowStation
OpenWindowStationW
GetThreadDesktop
GetProcessWindowStation
CloseDesktop
CloseWindowStation
SetDlgItemTextW
EndDialog
DialogBoxParamW
LoadStringW
CharPrevW
CharNextW

ntdll

RtlImageNtHeader
RtlAllocateHeap
RtlFreeHeap
WinSqmSetDWORD

Exports

Exports

??0CComPlusComponent@@QAE@ABV0@@Z
??0CComPlusInterface@@QAE@ABV0@@Z
??0CComPlusMethod@@QAE@ABV0@@Z
??0CComPlusObject@@QAE@ABV0@@Z
??1CComPlusComponent@@UAE@XZ
??1CComPlusInterface@@UAE@XZ
??4CComPlusComponent@@QAEAAV0@ABV0@@Z
??4CComPlusInterface@@QAEAAV0@ABV0@@Z
??4CComPlusMethod@@QAEAAV0@ABV0@@Z
??4CComPlusObject@@QAEAAV0@ABV0@@Z
??4CComPlusTypelib@@QAEAAV0@ABV0@@Z
??_7CComPlusComponent@@6B@
??_7CComPlusInterface@@6B@
??_7CComPlusMethod@@6B@
??_7CComPlusObject@@6B@
?GetITypeLib@CComPlusTypelib@@QAEPAUITypeLib@@XZ
CGMIsAdministrator
COMPlusUninstallActionW
CreateComRegDBWriter
DestroyComRegDBWriter
DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer
FindAssemblyModulesW
ManagedRequestW
QueryUserDllW
RegDBBackup
RegDBRestore
RunMTSToCom
StartMTSTOCOM
SysprepComplus
SysprepComplus2
WinlogonHandlePendingInfOperations

Sections

.text
Size: 442KB - Virtual size: 441KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 10KB - Virtual size: 18KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 19KB - Virtual size: 19KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ba857af8dfb93e0d23cb222d07d8443d

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

mfcsubs

ole32

kernel32

advapi32

user32

ntdll

Exports

Exports

Sections

.text Size: 442KB - Virtual size: 441KB

.data Size: 10KB - Virtual size: 18KB

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

.reloc Size: 19KB - Virtual size: 19KB

.text
Size: 442KB - Virtual size: 441KB

.data
Size: 10KB - Virtual size: 18KB

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

.reloc
Size: 19KB - Virtual size: 19KB