Static task
static1
Behavioral task
behavioral1
Sample
CVE-2021-33739_x64.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
CVE-2021-33739_x64.exe
Resource
win10v2004-20230703-en
General
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Target
CVE-2021-33739_x64.exe
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Size
126KB
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MD5
97d3f44c4c337b5e04ba2ccff89ee0c8
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SHA1
5d40a953d91832ef05bf78c411f2c975cfacc660
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SHA256
7ae5e5cea287ec0cafeaae833a3fbf3413109cc0de1167460697ee9dc0347c2c
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SHA512
80e07003c4c1d8736c4a3d06431b360c1c4cf2fb052fc089e3342c02877cd34d5d7922ddcc69f94fcee6da14462f1797db4d3538fbf900a00468a640db4773d2
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SSDEEP
3072:52bcCbFU165mFiRAv4Qmezu799XoILeVowbi:5MbwgQiCv4DezuX3Lq
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource CVE-2021-33739_x64.exe
Files
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CVE-2021-33739_x64.exe.exe windows x64
4cddac3e288a97bd2e64bad95871c692
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
DuplicateHandle
OpenProcess
CreateToolhelp32Snapshot
GetLastError
Process32NextW
GetCurrentThread
Process32FirstW
CloseHandle
LocalAlloc
GetProcAddress
VirtualAllocEx
LocalFree
GetCurrentProcessId
FreeLibrary
CreateRemoteThread
LoadLibraryExW
WriteConsoleW
GetCurrentProcess
VirtualAlloc
LoadLibraryW
WriteProcessMemory
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwindEx
RtlPcToFileHeader
RaiseException
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
GetStdHandle
WriteFile
GetModuleFileNameW
ExitProcess
GetModuleHandleExW
GetCommandLineA
GetCommandLineW
HeapAlloc
HeapFree
CompareStringW
LCMapStringW
GetFileType
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetCPInfo
MultiByteToWideChar
WideCharToMultiByte
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
GetStringTypeW
GetProcessHeap
FlushFileBuffers
GetConsoleCP
GetConsoleMode
GetFileSizeEx
SetFilePointerEx
HeapSize
HeapReAlloc
CreateFileW
gdi32
CreatePalette
advapi32
OpenProcessToken
Sections
.text Size: 73KB - Virtual size: 72KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 42KB - Virtual size: 41KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 3KB - Virtual size: 7KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 4KB - Virtual size: 4KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
_RDATA Size: 512B - Virtual size: 252B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 512B - Virtual size: 480B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 2KB - Virtual size: 1KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ