Static task
static1
Behavioral task
behavioral1
Sample
LibreOfficeInstaller.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
LibreOfficeInstaller.exe
Resource
win10v2004-20230220-en
General
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Target
LibreOfficeInstaller.exe
-
Size
259KB
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MD5
086486c030983a223c537820ba1b1a68
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SHA1
82e7f7aa72dc0f867be08cb005d2e4a23d941a2a
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SHA256
8ee6c43c1b3f1d986e0e79e9aa57db0dd9353b6a36c47c355c3ffb8572c682f7
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SHA512
917586c1703445e0a91e5cd8b6a599bfe71509fa9c60578635cef232f32eb96671b0df0d39e32151c28095f958f1e0763e65dcad4b8224c91f33acdee474f76d
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SSDEEP
6144:/gLA1H/VEvHC3uSoTbstPK7jDmI6CTBqt2xQcJ:R/V2shK7jqI6CTs8QU
Malware Config
Signatures
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource LibreOfficeInstaller.exe
Files
-
LibreOfficeInstaller.exe.exe windows x86
bc4799dd6e27c61f21260b2b91bafab5
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
FindFirstFileW
FindNextFileW
FindClose
RemoveDirectoryW
MoveFileExW
CreateDirectoryW
MultiByteToWideChar
WideCharToMultiByte
WriteFile
ReadFile
CreateFileW
GetFileSizeEx
GetSystemTimeAsFileTime
GetTickCount
GetVersionExW
GetProcAddress
GetModuleHandleW
SetFileTime
GetStdHandle
Sleep
LoadLibraryW
LocalFree
FormatMessageW
VirtualQuery
SetUnhandledExceptionFilter
EnterCriticalSection
LeaveCriticalSection
GetComputerNameW
GetLocalTime
InitializeCriticalSectionAndSpinCount
DeleteCriticalSection
CreateProcessW
WaitForSingleObject
GetExitCodeProcess
GetPrivateProfileStringW
CreateThread
TerminateProcess
SetFilePointerEx
RaiseException
GetCommandLineW
FlushInstructionCache
SetLastError
GetCurrentThreadId
GetCurrentProcess
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetFileAttributesW
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
IsValidCodePage
GetOEMCP
GetACP
ExitProcess
HeapCreate
IsDebuggerPresent
UnhandledExceptionFilter
GetCPInfo
LCMapStringW
RtlUnwind
GetStartupInfoW
HeapSetInformation
DecodePointer
EncodePointer
InitializeCriticalSection
InterlockedDecrement
InterlockedIncrement
InterlockedPopEntrySList
VirtualAlloc
VirtualFree
IsProcessorFeaturePresent
InterlockedPushEntrySList
SetHandleCount
InterlockedCompareExchange
GetProcessHeap
HeapSize
HeapReAlloc
HeapFree
HeapAlloc
HeapDestroy
GetFileType
QueryPerformanceCounter
GetCurrentProcessId
DeleteFileW
FreeLibrary
SetFileAttributesW
GetModuleFileNameW
ExpandEnvironmentStringsW
GetShortPathNameW
GetTempPathW
GetUserDefaultLCID
GetLocaleInfoA
EnumSystemLocalesA
IsValidLocale
GetStringTypeW
FlushFileBuffers
WriteConsoleW
CloseHandle
FindResourceExW
FindResourceW
LoadResource
LockResource
SizeofResource
LocalAlloc
GetLocaleInfoW
GetLastError
SetStdHandle
GetConsoleMode
GetConsoleCP
SetFilePointer
user32
DestroyMenu
CallWindowProcW
GetSubMenu
LoadMenuW
CreateWindowExW
LoadCursorW
GetClassInfoExW
RegisterClassExW
LoadStringW
PeekMessageW
GetMessageW
TranslateMessage
DispatchMessageW
DefWindowProcW
TrackPopupMenu
GetCursorPos
SetForegroundWindow
PostQuitMessage
RegisterWindowMessageW
EndDialog
MessageBoxW
WaitForInputIdle
ShowWindow
SetWindowLongW
SendMessageW
GetSystemMetrics
LoadImageW
GetWindow
GetWindowLongW
MonitorFromWindow
GetMonitorInfoW
GetWindowRect
GetParent
GetClientRect
MapWindowPoints
SetWindowPos
GetWindowTextLengthW
GetWindowTextW
GetDlgItem
PostMessageW
DialogBoxParamW
UnregisterClassA
gdi32
GetStockObject
advapi32
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
shell32
Shell_NotifyIconW
CommandLineToArgvW
ShellExecuteW
wintrust
WinVerifyTrust
crypt32
CryptUnprotectData
CryptMsgGetParam
CryptQueryObject
CertCloseStore
CryptMsgClose
CertFindCertificateInStore
CertGetNameStringW
CertFreeCertificateContext
wininet
InternetOpenW
InternetReadFile
HttpQueryInfoW
HttpSendRequestW
HttpOpenRequestW
InternetConnectW
InternetSetOptionW
InternetQueryOptionW
InternetCloseHandle
InternetCrackUrlW
InternetOpenUrlW
rpcrt4
RpcStringFreeW
UuidToStringW
UuidCreateSequential
urlmon
ObtainUserAgentString
Sections
.text Size: 173KB - Virtual size: 172KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 48KB - Virtual size: 48KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 7KB - Virtual size: 15KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 10KB - Virtual size: 10KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 12KB - Virtual size: 12KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ