credui[.]dll | Triage

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General

Target

credui.dll
Size

166KB
MD5

3c9358329339e1015f0bebbaa08b3a88
SHA1

3d6a0f6212339dd54f906fb9971fc66930a2ed57
SHA256

71f7d4872f8e81424cb16299289c1a7f4d18f1a6b3f7e22b124a34187146a590
SHA512

1baf6c98e384a93110d7578862607bec8cb2c2b1a3f3572959cd3863465e11e95c1edabc2ab75146a8d4ec0814fbbe99114ebe68181a6eed09f2e849a0b22134
SSDEEP

1536:0OpPTKjRkIM8+oNJAt5EG4MIkGVikq8HCHJWOZ5eWtprPY9tOEtW+BKEzwR3/:LBTy8oNit5EGPQViHiP56pmUEw+AEU

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
credui.dll

Files

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

d92f47fc71b2a787746e7b6bef00a8f5

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

credui.pdb

Imports

msvcrt

memset
strcmp
__CxxFrameHandler3
__C_specific_handler
_initterm
_amsg_exit
_XcptFilter
_snwprintf_s
putchar
wcsstr
_wcsnicmp
free
malloc
wcscpy_s
wcschr
wcsrchr
_vsnwprintf
toupper
wcstol
_iob
fputs
_resetstkoflw
memmove
memcpy
_wcsicmp
wcscmp

ntdll

RtlAllocateHeap
RtlCompareUnicodeString
NtQueryInformationToken
RtlCompareMemoryUlong
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
NtClose
RtlCreateUnicodeStringFromAsciiz
RtlFreeAnsiString
RtlUnicodeStringToAnsiString
RtlNtStatusToDosErrorNoTeb
RtlInitUnicodeString
RtlInitString
EtwEventUnregister
EtwEventRegister
RtlFreeUnicodeString
RtlCreateUnicodeString
RtlGetLastNtStatus
RtlNtStatusToDosError
EtwEventWrite
RtlCompareMemory
RtlFreeHeap

user32

GetClassNameW
GetGUIThreadInfo
GetWindowThreadProcessId
IsWindowVisible
GetThreadDesktop
MsgWaitForMultipleObjectsEx
PeekMessageW
TranslateMessage
GetWindowBand
GetAncestor
SetThreadDesktop
RegisterWindowMessageA
LoadStringW
SetForegroundWindow
SetRect
EnumChildWindows
SetWindowPos
MapWindowPoints
DispatchMessageW
AllowSetForegroundWindow
IsWindow
EndDialog
GetDlgItem
KillTimer
GetUpdateRect
PostQuitMessage
SetTimer
IsDlgButtonChecked
CheckDlgButton
GetWindowTextLengthW
GetWindowTextA
SetWindowTextA
GetWindowTextW
GetWindowLongW
SetWindowLongW
MapDialogRect
EnableWindow
SetWindowTextW
LoadCursorW
LoadIconW
DefWindowProcW
InvalidateRect
GetClientRect
CallWindowProcW
GetKeyState
LockSetForegroundWindow
SetWindowLongPtrW
GetWindowLongPtrW
UpdateWindow
InvalidateRgn
GetParent
GetWindowRect
SetFocus
IsWindowEnabled
SendMessageW
DestroyWindow
UnregisterClassW
RegisterClassW
DialogBoxParamW
PostMessageW
RegisterWindowMessageW
GetMessageW
CreateWindowExW

kernel32

GetCurrentProcessId
DuplicateHandle
GetProcessId
RaiseException
LoadLibraryExA
RegOpenKeyExA
RegQueryValueExA
ExpandEnvironmentStringsA
ResumeThread
CreateEventW
RegGetValueW
ResolveDelayLoadedAPI
DelayLoadFailureHook
WaitForMultipleObjectsEx
SetEvent
WaitForSingleObject
GetComputerNameExW
LoadLibraryExW
DeactivateActCtx
ActivateActCtx
ReleaseActCtx
CreateActCtxW
GetModuleHandleW
HeapReAlloc
GetTickCount
GetSystemTimeAsFileTime
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
Sleep
HeapFree
HeapAlloc
PeekConsoleInputW
ReadConsoleW
SetConsoleMode
GetConsoleMode
WriteFile
GetConsoleOutputCP
WriteConsoleW
GetFileType
GetStdHandle
FreeLibrary
GetProcAddress
LoadLibraryW
GetModuleFileNameW
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
DisableThreadLibraryCalls
GetExitCodeThread
CreateThread
GetThreadUILanguage
GetCurrentThreadId
CompareStringOrdinal
CloseHandle
GetCurrentProcess
GetCurrentThread
SetThreadUILanguage
LocalFree
GetVersionExW
lstrcmpW
LocalAlloc
lstrlenW
FormatMessageW
WideCharToMultiByte
MultiByteToWideChar
SetLastError
LeaveCriticalSection
GetLastError
EnterCriticalSection
GetProcessHeap

Exports

Exports

CredPackAuthenticationBufferA
CredPackAuthenticationBufferW
CredUICmdLinePromptForCredentialsA
CredUICmdLinePromptForCredentialsW
CredUIConfirmCredentialsA
CredUIConfirmCredentialsW
CredUIInitControls
CredUIParseUserNameA
CredUIParseUserNameW
CredUIPromptForCredentialsA
CredUIPromptForCredentialsW
CredUIPromptForWindowsCredentialsA
CredUIPromptForWindowsCredentialsW
CredUIPromptForWindowsCredentialsWorker
CredUIReadSSOCredA
CredUIReadSSOCredW
CredUIStoreSSOCredA
CredUIStoreSSOCredW
CredUnPackAuthenticationBufferA
CredUnPackAuthenticationBufferW
DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer
SspiGetCredUIContext
SspiIsPromptingNeeded
SspiPromptForCredentialsA
SspiPromptForCredentialsW
SspiUnmarshalCredUIContext
SspiUpdateCredentials

Sections

.text
Size: 114KB - Virtual size: 113KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 13KB - Virtual size: 14KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 25KB - Virtual size: 25KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

d92f47fc71b2a787746e7b6bef00a8f5

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

ntdll

user32

kernel32

Exports

Exports

Sections

.text Size: 114KB - Virtual size: 113KB

.data Size: 13KB - Virtual size: 14KB

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

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

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

.rsrc Size: 25KB - Virtual size: 25KB

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

.text
Size: 114KB - Virtual size: 113KB

.data
Size: 13KB - Virtual size: 14KB

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

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

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

.rsrc
Size: 25KB - Virtual size: 25KB

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