blister | 88fba76c3a7eb0f785903de05fb0bd06

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General

Target

88fba76c3a7eb0f785903de05fb0bd06
Size

4.9MB
MD5

88fba76c3a7eb0f785903de05fb0bd06
SHA1

35f452a43a838cbad695d596b2cad144cc115074
SHA256

8c981acb2673fa80fa39aa2ba9b1916cb9866b5e8f9ec1cc98bc7fed36b49c61
SHA512

f0bfb7e85de0834c3a3a8448ba4d218d28608b3634bed24590a30e91acb51632b01b09f3734547bca383c8d69a8e4c754337fa7d44a274c458fca04d21c29876
SSDEEP

98304:LXIbjOdRTNhVNwb64wmsBtA8x2nKXp8SXUMjR7VOMRf2TYwTkZ0032:jI4T9N/esBO62KSSXU0FVOM8Uwz

Score

10^/10

loader blister

Malware Config

Signatures

Blister family
blister
Detect Blister loader x32 1 IoCs
loader

Processes:

resource yara_rule

sample family_blister_x32
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.

Processes:

resource

88fba76c3a7eb0f785903de05fb0bd06

resource	yara_rule
sample	family_blister_x32

resource
88fba76c3a7eb0f785903de05fb0bd06

Files

88fba76c3a7eb0f785903de05fb0bd06
.dll regsvr32 windows:6 windows x86 arch:x86

3b2efd14033548a4d479d8e23d8b6ee7

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_DLL

PDB Paths

wmvcore.pdb

Imports

wmasf

ord9
ord24
ASFSetDataUnitInfo
ASFGetTimeBase
ASFCreateStreamSelector
ord18
ASFPresTimeToTime
ASFSendTimeToTime
ASFTimeToSendTime
ASFTimeToPresTime
ord10
ord6
ord8
ord17
ord7
ord5
ord11

msvcrt

??1type_info@@UAE@XZ
_onexit
_lock
__dllonexit
_unlock
_amsg_exit
_initterm
malloc
_ultow
_wtol
__CxxFrameHandler3
_except_handler4_common
strncmp
sscanf
isspace
strstr
_stricmp
isalnum
realloc
free
_waccess
swscanf_s
_wcsupr
wcsstr
wcstol
_itow
wcstombs
memchr
strpbrk
_wcslwr
memmove
_beginthreadex
srand
rand
??_V@YAXPAX@Z
_ftol2_sse
_wtoi
wcstoul
swscanf
_ftol2
setlocale
iswspace
_ultoa
iswdigit
strcspn
strspn
floor
ceil
_CIsin
_CIcos
toupper
isxdigit
iswcntrl
iswascii
wcsspn
wcscspn
_ltoa
isalpha
wcsftime
gmtime
perror
_ftol
printf
??_U@YAPAXI@Z
_vsnwprintf
_vsnprintf
_strnicmp
wcsrchr
wcschr
wcspbrk
wcsncmp
_wcsicmp
_purecall
_set_error_mode
??2@YAPAXI@Z
memset
memcpy
??3@YAXPAX@Z
_wcsnicmp
wcsncpy_s
_ui64toa
_itoa
towupper
iswprint
strtoul
_errno
isdigit
strchr
time
_CIsqrt
_CIpow
iswctype
wcstok
_XcptFilter

advapi32

RegSetValueExA
RegCreateKeyExA
RegQueryValueExA
RegQueryInfoKeyW
RegDeleteKeyW
RegEnumKeyW
RegSetValueExW
RegCreateKeyExW
RegEnumValueW
GetUserNameW
RegQueryValueExW
RegOpenKeyExW
RegDeleteValueW
RegCloseKey
TraceEvent
RegOpenKeyW
CryptAcquireContextA
CryptReleaseContext
CryptGenRandom

kernel32

InitializeCriticalSectionAndSpinCount
VirtualProtect
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
RaiseException
LocalAlloc
LoadLibraryExA
GetCurrentProcessId
GetLocalTime
GetDiskFreeSpaceA
GetEnvironmentStringsW
GetEnvironmentStrings
lstrlenW
FreeEnvironmentStringsW
FreeEnvironmentStringsA
DeviceIoControl
GetVersionExA
LocalFree
GetVersion
GetModuleHandleA
GetSystemInfo
HeapReAlloc
SetLastError
QueryPerformanceCounter
CreateThread
GetExitCodeThread
GetCurrentThread
GetThreadPriority
SetThreadPriority
CreateSemaphoreA
SetEndOfFile
GetFileTime
FileTimeToSystemTime
GetLocaleInfoW
FindAtomW
GetModuleFileNameW
GetUserDefaultLCID
GetSystemDefaultLangID
GetVersionExW
GlobalAlloc
GlobalLock
GetProcAddress
LoadLibraryW
WaitForSingleObjectEx
ReleaseMutex
CreateMutexW
GlobalMemoryStatus
VirtualAlloc
VirtualFree
MulDiv
ResetEvent
WaitForMultipleObjects
SetThreadAffinityMask
SetHandleInformation
GetComputerNameW
HeapSize
GetTempPathW
FreeLibraryAndExitThread
GetProcessAffinityMask
InterlockedExchangeAdd
GetExitCodeProcess
OpenProcess
GetModuleHandleExA
SignalObjectAndWait
SleepEx
DuplicateHandle
SetFilePointerEx
GetFileSizeEx
LoadLibraryA
DisableThreadLibraryCalls
FreeResource
CloseHandle
WriteFile
CreateFileW
GetLastError
GetFileAttributesW
GetSystemDirectoryW
SizeofResource
LockResource
LoadResource
FindResourceW
GetModuleHandleW
InterlockedCompareExchange
InterlockedIncrement
HeapAlloc
GetProcessHeap
HeapFree
InterlockedDecrement
ReadFile
GetFileType
DeleteCriticalSection
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSection
SetEvent
GetCurrentThreadId
SystemTimeToFileTime
GetSystemTime
WaitForSingleObject
GetFileSize
ReleaseSemaphore
CreateSemaphoreW
GetTickCount
GetSystemTimeAsFileTime
MultiByteToWideChar
SetFilePointer
GetDiskFreeSpaceExW
WideCharToMultiByte
lstrlenA
CompareFileTime
DeleteFileW
Sleep
CreateEventW
FreeLibrary
InterlockedExchange
GetVolumeInformationW

user32

GetDC
GetDesktopWindow
ReleaseDC
MsgWaitForMultipleObjects
DispatchMessageW
PeekMessageW
PostThreadMessageW
CharUpperW

ole32

CLSIDFromString
CoGetTreatAsClass
StringFromCLSID
CoTaskMemAlloc
CoCreateGuid
CoInitializeEx
CoCreateInstance
CoUninitialize
CoTaskMemFree

oleaut32

SafeArrayAccessData
SafeArrayUnaccessData
SysAllocStringLen
SafeArrayCreate
VariantChangeType
VariantTimeToSystemTime
SysStringByteLen
SysStringLen
SysAllocString
SysFreeString
VariantInit
VariantCopy
VariantClear
SafeArrayDestroy

gdi32

GetSystemPaletteEntries

gdiplus

GdiplusShutdown
GdipCloneImage
GdipDrawImageRectI
GdipGetImageGraphicsContext
GdipBitmapUnlockBits
GdipBitmapLockBits
GdipCreateBitmapFromScan0
GdipCreateBitmapFromStreamICM
GdipCreateBitmapFromStream
GdipImageRotateFlip
GdipGetImagePixelFormat
GdipGetImageHeight
GdipGetImageWidth
GdipDisposeImage
GdipDeleteGraphics
GdipAlloc
GdipFree
GdiplusStartup

Exports

Exports

DllRegisterServer
WMCheckURLExtension
WMCheckURLScheme
WMCreateBackupRestorer
WMCreateBackupRestorerPrivate
WMCreateEditor
WMCreateIndexer
WMCreateLicenseRevocationAgentPrivate
WMCreateProfileManager
WMCreateReader
WMCreateReaderPriv
WMCreateSyncReader
WMCreateSyncReaderPriv
WMCreateWriter
WMCreateWriterFileSink
WMCreateWriterNetworkSink
WMCreateWriterPriv
WMCreateWriterPushSink
WMIsAvailableOffline
WMIsContentProtected
WMValidateData

Sections

.text
Size: 1.9MB - Virtual size: 1.9MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

RT_CODE
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 87KB - Virtual size: 87KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

RT_DATA
Size: 512B - Virtual size: 305B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2.8MB - Virtual size: 2.8MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 55KB - Virtual size: 55KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3b2efd14033548a4d479d8e23d8b6ee7

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

wmasf

msvcrt

advapi32

kernel32

user32

ole32

oleaut32

gdi32

gdiplus

Exports

Exports

Sections

.text Size: 1.9MB - Virtual size: 1.9MB

RT_CODE Size: 4KB - Virtual size: 4KB

.data Size: 87KB - Virtual size: 87KB

RT_DATA Size: 512B - Virtual size: 305B

.rsrc Size: 2.8MB - Virtual size: 2.8MB

.reloc Size: 55KB - Virtual size: 55KB

.text
Size: 1.9MB - Virtual size: 1.9MB

RT_CODE
Size: 4KB - Virtual size: 4KB

.data
Size: 87KB - Virtual size: 87KB

RT_DATA
Size: 512B - Virtual size: 305B

.rsrc
Size: 2.8MB - Virtual size: 2.8MB

.reloc
Size: 55KB - Virtual size: 55KB