Static task
static1
Behavioral task
behavioral1
Sample
rmirndll.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
rmirndll.exe
Resource
win10v2004-20230915-en
General
-
Target
rmirndll.exe
-
Size
284.9MB
-
MD5
1ace7239d476e8f2ab1e0f895ad914bb
-
SHA1
f8649d83b55c766555155a6e4e93b0a8ba20a16a
-
SHA256
c4ab19f5df750926772df175c8e98a810be6bdf3e7f284d233a42ecdc01e84ef
-
SHA512
242c26e656d431d77d54aea03401c47af551e135d28f41aa689c70f17d892cb3bef8e96c2de672cf46b0989e906c4881320a5f4957132650888722761c6a505d
-
SSDEEP
6291456:Hp+zWUybgn/EP0vHVRBKzMmZyrx6zbmfZ9tnUhRR1Bu5Tn0AzFz950cppBcAHP43:6ssEYmZe6ziRnUhlm3xzNppBcAHa
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource rmirndll.exe
Files
-
rmirndll.exe.exe windows:5 windows x86
5938595bb66985e0cf2a424ed703fa0b
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
CreateFileW
CloseHandle
DeviceIoControl
QueryPerformanceCounter
GetProcAddress
GetModuleHandleW
UnmapViewOfFile
RemoveDirectoryW
GetTickCount
GetUserDefaultLangID
CreateProcessW
LoadLibraryW
GetExitCodeProcess
WaitForSingleObject
MapViewOfFile
CreateFileMappingW
GetFileSizeEx
GetPrivateProfileStringW
GetLastError
TerminateProcess
Sleep
GetCurrentProcess
GetFileType
SetFilePointer
ReadFile
SystemTimeToFileTime
GetCurrentDirectoryA
DosDateTimeToFileTime
WriteFile
HeapAlloc
GetProcessHeap
HeapFree
WideCharToMultiByte
MultiByteToWideChar
GetWindowsDirectoryW
GetTempPathW
GetModuleFileNameW
FindFirstFileW
FindClose
FindNextFileW
GetFileAttributesW
CreateDirectoryW
FlushFileBuffers
SetFilePointerEx
SetFileAttributesW
DeleteFileW
MoveFileExW
GetVersionExW
GetNativeSystemInfo
UnhandledExceptionFilter
SetUnhandledExceptionFilter
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
CreateEventW
LoadLibraryExA
VirtualQuery
VirtualProtect
SetLastError
CreateFileMappingA
GetFileSize
InterlockedCompareExchange
RtlUnwind
RaiseException
EncodePointer
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
ExitProcess
GetModuleHandleExW
GetStdHandle
GetACP
GetStringTypeW
FindFirstFileExW
IsValidCodePage
GetOEMCP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetEnvironmentStringsW
FreeEnvironmentStringsW
LCMapStringW
SetStdHandle
HeapSize
HeapReAlloc
GetConsoleCP
GetConsoleMode
DecodePointer
WriteConsoleW
GetSystemInfo
ntdll
RtlDowncaseUnicodeString
NtLoadDriver
RtlAdjustPrivilege
RtlInitUnicodeString
NtQuerySystemInformation
Sections
.text Size: 251KB - Virtual size: 250KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 50KB - Virtual size: 50KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 17KB - Virtual size: 20KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 291KB - Virtual size: 290KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 9KB - Virtual size: 9KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ