Static task
static1
Behavioral task
behavioral1
Sample
ViperUpd.exe
Resource
win11-20240508-en
General
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Target
ViperUpd.exe
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Size
520KB
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MD5
8a925673821977f33932b6f5cb39892a
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SHA1
4a73d3c471d0b201ac0f3816a75fb8a0dd792432
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SHA256
086ae3d0b7239121feca71c12ce470e2239e22b57682085ddf827911b569c3c8
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SHA512
12f8e2b5b9012301aa2037c9cc19958080b111b14b96d2812090f0d77ede51a101cebd950e9a3125bd7dbe4b49209187b5d9a2362aa1d99f104be25ee005a8ab
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SSDEEP
12288:UY+WRvvHcz2IUSNzTEfTNdLZKpYPBvSimSKtD8oPBL:UY+wHiPU0zTEfnzPBSDNPBL
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource ViperUpd.exe
Files
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ViperUpd.exe.exe windows:6 windows x86 arch:x86
4a047a336589f73e9c0c05150f21321a
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
WaitForSingleObjectEx
CreateThread
VirtualAlloc
FreeConsole
RaiseException
InitOnceBeginInitialize
InitOnceComplete
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
TryAcquireSRWLockExclusive
GetCurrentThreadId
WakeAllConditionVariable
SleepConditionVariableSRW
WideCharToMultiByte
GetLastError
FreeLibraryWhenCallbackReturns
CreateThreadpoolWork
SubmitThreadpoolWork
CloseThreadpoolWork
GetModuleHandleExW
IsProcessorFeaturePresent
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
QueryPerformanceCounter
CloseHandle
EncodePointer
DecodePointer
MultiByteToWideChar
LCMapStringEx
GetSystemTimeAsFileTime
GetModuleHandleW
GetProcAddress
GetStringTypeW
GetCPInfo
GetCurrentProcessId
InitializeSListHead
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
GetCurrentProcess
TerminateProcess
CreateFileW
RtlUnwind
SetLastError
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
GetStdHandle
WriteFile
GetModuleFileNameW
ExitProcess
GetCommandLineA
GetCommandLineW
HeapAlloc
HeapFree
CompareStringW
LCMapStringW
GetLocaleInfoW
IsValidLocale
GetUserDefaultLCID
EnumSystemLocalesW
GetFileType
GetFileSizeEx
SetFilePointerEx
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
ReadFile
ReadConsoleW
HeapReAlloc
FindClose
FindFirstFileExW
FindNextFileW
IsValidCodePage
GetACP
GetOEMCP
GetEnvironmentStringsW
FreeEnvironmentStringsW
SetEnvironmentVariableW
SetStdHandle
GetProcessHeap
HeapSize
WriteConsoleW
Sections
.text Size: 149KB - Virtual size: 149KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.con Size: 1KB - Virtual size: 1KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 45KB - Virtual size: 45KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 314KB - Virtual size: 317KB
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