DropboxInstaller[.]exe

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General

Target

DropboxInstaller.exe
Size

654KB
MD5

dac2a1786cd255ff23650cafc2e074b4
SHA1

7f3e85c38a856cc723c20e958ece80aee16efea8
SHA256

eabc1741c30d4a3897c7ee81c310885d82be73b4567fce8bb23efccd216bc66c
SHA512

493fd4d0e0594d9f9023ebc6eeddf38ad073a39476b3afc6fa1d6cecf2bc3d339f0f44908036e76931893cbed928a245c33ddeb189d255d55b61f0c24753abf3
SSDEEP

12288:Z/iSuOs4HEI4rcS9UA5WxsD+c66j/Spx+Mx3yhTy6iai62UF4kaytvmOA0T:Z/iKsVIoceUA50sD+clAyhTYaT2Uqkay

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
DropboxInstaller.exe

Files

DropboxInstaller.exe
.exe windows:5 windows x86

959c9df12e2ee961f3fcecfec5f9b8d1

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

GetProcAddress
ExitProcess
WriteFile
GetStdHandle
GetModuleFileNameA
FreeEnvironmentStringsA
GetEnvironmentStrings
FreeEnvironmentStringsW
WideCharToMultiByte
GetLastError
GetEnvironmentStringsW
SetHandleCount
GetFileType
DeleteCriticalSection
TlsGetValue
TlsAlloc
TlsSetValue
TlsFree
InterlockedIncrement
SetLastError
GetCurrentThreadId
InterlockedDecrement
HeapCreate
HeapDestroy
VirtualFree
HeapFree
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetSystemTimeAsFileTime
LeaveCriticalSection
EnterCriticalSection
TerminateProcess
Sleep
UnhandledExceptionFilter
IsDebuggerPresent
LoadLibraryA
InitializeCriticalSectionAndSpinCount
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
HeapAlloc
VirtualAlloc
HeapReAlloc
RtlUnwind
HeapSize
GetLocaleInfoA
LCMapStringA
MultiByteToWideChar
LCMapStringW
GetStringTypeA
GetStringTypeW
GetProcessHeap
InitializeCriticalSection
GetModuleHandleW
SetUnhandledExceptionFilter
GetStartupInfoA
GetCurrentProcess
GetCommandLineA
GetTempFileNameW
FindResourceExW
FindResourceW
LoadResource
VerSetConditionMask
SetFilePointerEx
CreateDirectoryW
SizeofResource
FormatMessageW
GetVersionExW
GetModuleFileNameW
CreateFileW
lstrlenW
GetTempPathW
RaiseException
VerifyVersionInfoW
Process32FirstW
LockResource
RemoveDirectoryW
Process32NextW
CreateToolhelp32Snapshot
CloseHandle
DeleteFileW
LocalFree
CreateProcessW
WaitForSingleObject
GetExitCodeProcess
GetStartupInfoW
MapViewOfFile
UnmapViewOfFile
VirtualQuery
CreateFileMappingW
SetFilePointer
ReadFile

shlwapi

PathQuoteSpacesW

advapi32

OpenServiceW
OpenSCManagerW
CloseServiceHandle
QueryServiceStatusEx

ole32

CoUninitialize
CoInitializeEx

user32

wvsprintfW
CharLowerBuffW
MessageBoxW

Sections

.text
Size: 47KB - Virtual size: 46KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 578KB - Virtual size: 578KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

959c9df12e2ee961f3fcecfec5f9b8d1

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

shlwapi

advapi32

ole32

user32

Sections

.text Size: 47KB - Virtual size: 46KB

.rdata Size: 11KB - Virtual size: 10KB

.data Size: 3KB - Virtual size: 6KB

.rsrc Size: 578KB - Virtual size: 578KB

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

.text
Size: 47KB - Virtual size: 46KB

.rdata
Size: 11KB - Virtual size: 10KB

.data
Size: 3KB - Virtual size: 6KB

.rsrc
Size: 578KB - Virtual size: 578KB

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