CrustaceanInstaller[.]exe

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General

Target

CrustaceanInstaller.exe
Size

3.4MB
MD5

dec8e1626e9516a0aa08ec7e9306536e
SHA1

dbc2645b9bddd407f75a73c535c1b6d59d52ebb6
SHA256

2741bc7b6077b10cf6e2efa92dcb6a9749b1289d1bd2a2ca544b3dd3e1475070
SHA512

c43e9d0c9be1117878eeefd76bad3ec6bfe08525e8b2b95772b8614219b688d571ac6119edda13f893623ad506dbed3d6701a66a1459cd12e9e9362821f8b6a7
SSDEEP

49152:sP8lveJ3g4fZvVR1Q1IIgLTRwY/immy+V5X7JkWW9AVSLkB9bbroKJeq0IQF:ulL5uVJbRQ

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
CrustaceanInstaller.exe

Files

CrustaceanInstaller.exe
.exe windows:4 windows x64 arch:x64

7e299067e55e51403e3906e21892b2b5

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

advapi32

RegCloseKey
RegCreateKeyExW
RegOpenKeyExW
RegQueryValueExW
RegSetValueExW

gdi32

ChoosePixelFormat
CreateRectRgn
DeleteObject
DescribePixelFormat
GetDeviceCaps
GetPixelFormat
SetPixelFormat
SwapBuffers

kernel32

AcquireSRWLockExclusive
AcquireSRWLockShared
AddVectoredExceptionHandler
CloseHandle
CreateDirectoryW
CreateFileMappingA
CreateFileW
CreateIoCompletionPort
CreateMutexA
CreateThread
CreateToolhelp32Snapshot
DeviceIoControl
DuplicateHandle
ExitProcess
FormatMessageW
FreeLibrary
GetCommandLineW
GetConsoleMode
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentThread
GetCurrentThreadId
GetEnvironmentVariableW
GetFileInformationByHandle
GetFinalPathNameByHandleW
GetFullPathNameW
GetLastError
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleW
GetProcAddress
GetProcessHeap
GetQueuedCompletionStatusEx
GetStartupInfoA
GetStdHandle
GlobalAlloc
GlobalFree
GlobalLock
GlobalSize
GlobalUnlock
HeapAlloc
HeapFree
HeapReAlloc
LoadLibraryA
LoadLibraryExW
LoadLibraryW
MapViewOfFile
Module32FirstW
Module32NextW
MultiByteToWideChar
PostQueuedCompletionStatus
QueryPerformanceCounter
QueryPerformanceFrequency
ReleaseMutex
ReleaseSRWLockExclusive
ReleaseSRWLockShared
SetFileCompletionNotificationModes
SetFilePointerEx
SetHandleInformation
SetLastError
SetThreadErrorMode
SetThreadStackGuarantee
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
SwitchToThread
TlsAlloc
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
UnmapViewOfFile
WaitForSingleObject
WaitForSingleObjectEx
WakeAllConditionVariable
WakeConditionVariable
WriteConsoleW
lstrlenW
DeleteCriticalSection
EnterCriticalSection
InitializeCriticalSection
LeaveCriticalSection
RaiseException
RtlUnwindEx
RtlVirtualUnwind
VirtualProtect
VirtualQuery
__C_specific_handler

ole32

CoCreateInstance
CoInitializeEx
CoTaskMemFree
CoUninitialize
OleInitialize
RegisterDragDrop
RevokeDragDrop

user32

AdjustWindowRectEx
ChangeDisplaySettingsExW
ClientToScreen
ClipCursor
CloseClipboard
CloseTouchInputHandle
CreateIcon
CreateWindowExW
DefWindowProcW
DestroyIcon
DestroyWindow
DispatchMessageW
EmptyClipboard
GetActiveWindow
GetClassInfoExW
GetClassNameW
GetClientRect
GetClipCursor
GetClipboardData
GetCursorPos
GetDC
GetKeyState
GetKeyboardLayout
GetKeyboardState
GetMenu
GetMessageW
GetMonitorInfoW
GetRawInputData
GetSystemMetrics
GetTouchInputInfo
GetUpdateRect
GetWindowLongPtrW
GetWindowLongW
GetWindowPlacement
GetWindowRect
InvalidateRgn
IsClipboardFormatAvailable
IsProcessDPIAware
LoadCursorW
MapVirtualKeyA
MapVirtualKeyW
MonitorFromRect
MonitorFromWindow
MsgWaitForMultipleObjectsEx
OpenClipboard
PeekMessageW
PostMessageW
PostThreadMessageW
RedrawWindow
RegisterClassExW
RegisterRawInputDevices
RegisterTouchWindow
RegisterWindowMessageA
ReleaseCapture
ScreenToClient
SendInput
SendMessageW
SetCapture
SetClipboardData
SetCursor
SetForegroundWindow
SetProcessDPIAware
SetWindowLongPtrW
SetWindowLongW
SetWindowPlacement
SetWindowPos
SetWindowTextW
ShowCursor
ShowWindow
SystemParametersInfoA
ToUnicodeEx
TrackMouseEvent
TranslateMessage
ValidateRect

ws2_32

WSACleanup
WSAGetLastError
WSAIoctl
WSASend
WSASocketW
WSAStartup
bind
closesocket
connect
freeaddrinfo
getaddrinfo
getpeername
getsockname
getsockopt
ioctlsocket
recv
send
setsockopt
shutdown

bcrypt

BCryptGenRandom

crypt32

CertAddCertificateContextToStore
CertCloseStore
CertDuplicateCertificateChain
CertDuplicateCertificateContext
CertDuplicateStore
CertEnumCertificatesInStore
CertFreeCertificateChain
CertFreeCertificateContext
CertGetCertificateChain
CertOpenStore
CertVerifyCertificateChainPolicy

dwmapi

DwmEnableBlurBehindWindow

imm32

ImmAssociateContextEx
ImmGetCompositionStringW
ImmGetContext
ImmReleaseContext
ImmSetCandidateWindow

secur32

AcceptSecurityContext
AcquireCredentialsHandleA
ApplyControlToken
DecryptMessage
DeleteSecurityContext
EncryptMessage
FreeContextBuffer
FreeCredentialsHandle
InitializeSecurityContextW
QueryContextAttributesW

uxtheme

SetWindowTheme

winmm

timeBeginPeriod
timeEndPeriod
timeGetDevCaps

msvcrt

__getmainargs
__initenv
__iob_func
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_cexit
_commode
_errno
_fmode
_fpreset
_hypot
_initterm
_onexit
abort
acosf
atan2f
calloc
ceilf
cosf
exit
expf
floor
floorf
fprintf
free
fwrite
malloc
memcmp
memcpy
memmove
memset
powf
signal
strlen
strncmp
vfprintf
wcslen

ntdll

NtCancelIoFileEx
NtCreateFile
NtDeviceIoControlFile
RtlCaptureContext
RtlLookupFunctionEntry
RtlNtStatusToDosError

opengl32

wglCreateContext
wglDeleteContext
wglGetCurrentContext
wglGetCurrentDC
wglGetProcAddress
wglMakeCurrent
wglShareLists

shell32

DragFinish
DragQueryFileW
SHCreateItemFromParsingName
SHGetKnownFolderPath
ShellExecuteW

Sections

.text
Size: 1.4MB - Virtual size: 1.4MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 5KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 1.8MB - Virtual size: 1.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.eh_fram
Size: 512B - Virtual size: 4B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 53KB - Virtual size: 53KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 61KB - Virtual size: 61KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 1KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 208B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 8KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

7e299067e55e51403e3906e21892b2b5

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

gdi32

kernel32

ole32

user32

ws2_32

bcrypt

crypt32

dwmapi

imm32

secur32

uxtheme

winmm

msvcrt

ntdll

opengl32

shell32

Sections

.text Size: 1.4MB - Virtual size: 1.4MB

.data Size: 5KB - Virtual size: 5KB

.rdata Size: 1.8MB - Virtual size: 1.8MB

.eh_fram Size: 512B - Virtual size: 4B

.pdata Size: 53KB - Virtual size: 53KB

.xdata Size: 61KB - Virtual size: 61KB

.bss Size: - Virtual size: 1KB

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

.CRT Size: 512B - Virtual size: 208B

.tls Size: 512B - Virtual size: 16B

.reloc Size: 8KB - Virtual size: 8KB

.text
Size: 1.4MB - Virtual size: 1.4MB

.data
Size: 5KB - Virtual size: 5KB

.rdata
Size: 1.8MB - Virtual size: 1.8MB

.eh_fram
Size: 512B - Virtual size: 4B

.pdata
Size: 53KB - Virtual size: 53KB

.xdata
Size: 61KB - Virtual size: 61KB

.bss
Size: - Virtual size: 1KB

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

.CRT
Size: 512B - Virtual size: 208B

.tls
Size: 512B - Virtual size: 16B

.reloc
Size: 8KB - Virtual size: 8KB