RtlUpd[.]dll[.]exe

Resubmissions

24/12/2024, 06:27

241224-g7499asnhr10

30/04/2024, 15:46

240430-s7lnpacb598

Sharing

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General

Target
RtlUpd.dll.exe
Size 62KB
Sample240430-s7lnpacb59
SHA256 6a195e6111c9a4b8c874d51937b53cd5b4b78efc32f7bb255012d05087586d8f
MD5 c16bdc61bbc82e9668f8cee9cc5c94c5
SHA1 c2f98475c7be3064e0b294ef546f57d3c3a1e267
SHA512 9337275916970bd88fb1de18959bf587e29147cf6198e3a242679b198cca26d7ddeeda2e893145058444e494048768ac33ce36e75a44fb84b4a0c50a3814faae
SSDEEP 1536:yyMGpJvykUU0mVWUBmJyB1NjKOaSHGfuUF8u7J8NG3:nrpPUUXWXK1NoLfuQ8u7J8Nw
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
RtlUpd.dll.exe

File Explorer

RtlUpd.dll.exe

.dll 62KB

RtlUpd.dll.exe

IMPHASH 9e89b06661c393195797fb70ceba29aa
SHA256 6a195e6111c9a4b8c874d51937b53cd5b4b78efc32f7bb255012d05087586d8f
MD5 c16bdc61bbc82e9668f8cee9cc5c94c5
SHA1 c2f98475c7be3064e0b294ef546f57d3c3a1e267
SHA512 9337275916970bd88fb1de18959bf587e29147cf6198e3a242679b198cca26d7ddeeda2e893145058444e494048768ac33ce36e75a44fb84b4a0c50a3814faae
SSDEEP 1536:yyMGpJvykUU0mVWUBmJyB1NjKOaSHGfuUF8u7J8NG3:nrpPUUXWXK1NoLfuQ8u7J8Nw
MD5 SHA1 SHA512 SSDEEP

regsvr32 windows:4 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4944

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DEBUG_STRIPPED IMAGE_FILE_DLL

PDB paths

advapi32

GetUserNameW RegCloseKey RegEnumKeyExW RegOpenKeyExW RegQueryValueExW

kernel32

CloseHandle CopyFileW CreateFileW CreateMutexW CreatePipe CreateProcessW CreateThread DeleteCriticalSection DeleteFileW EnterCriticalSection ExpandEnvironmentStringsW FindClose FindFirstFileW FindNextFileW GetCommandLineW GetComputerNameExW GetComputerNameW GetCurrentDirectoryW GetLastError GetModuleFileNameW GetModuleHandleW GetProcAddress GetProcessHeap GetSystemInfo GetTempPathW GetTickCount GetVolumeInformationW GlobalMemoryStatusEx HeapAlloc HeapFree HeapReAlloc InitializeCriticalSection IsDBCSLeadByteEx LeaveCriticalSection LoadLibraryW MultiByteToWideChar PeekNamedPipe ReadFile SetCurrentDirectoryW SetFilePointer SetHandleInformation SetLastError Sleep TerminateProcess TlsGetValue VirtualProtect VirtualQuery WaitForSingleObject WideCharToMultiByte WriteFile

msvcrt

___lc_codepage_func ___mb_cur_max_func __iob_func _amsg_exit _errno _initterm _lock _unlock _wcsnicmp abort calloc fputwc free fwprintf fwrite localeconv malloc memcpy memset realloc strcat strcpy strerror strlen strncmp vfprintf wcscat wcscmp wcscpy wcslen

shell32

CommandLineToArgvW SHGetFolderPathW

ws2_32

WSACleanup WSAStartup gethostbyname gethostname inet_ntoa

Name

.text

Size

46KB

Virtual Size

45KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

1024B

Virtual Size

576B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

5KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.pdata

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.xdata

Size

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.edata

Size

512B

Virtual Size

184B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.idata

Size

3KB

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.CRT

Size

512B

Virtual Size

88B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.reloc

Size

512B

Virtual Size

100B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

File Explorer

RtlUpd.dll.exe

advapi32

kernel32

msvcrt

shell32

ws2_32

generic