2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk

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General

Target
2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk
Size 1.7MB
Sample240613-n2ldhsxeld
SHA256 dd43c5617911a2aafdfe73b940cc70e70b5fabad70eb63d7f2bb147e8814d67b
MD5 a8cf4f382484f2c68085bab3f6e43b9c
SHA1 80428e8089b9a512f73c77f9fac48f327dd03c71
SHA512 b740fa632e86815cbb0caf8d0ce7b4f96bd61dda3f9ef7aeefa08046f053d45eeec3aab3d325476eb5ba60fc8874e9a09cc0dbf8ebc0ab646ede947d6b9a211f
SSDEEP 24576:1T5npwJ+RcHofe3y1sInB2COzRq8DvFqt:x5dCP4suIRbDv
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk

File Explorer

2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk

.exe 1.7MB

2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk

IMPHASH 11145c2c07e671cc47c0cfcafd4c3816
SHA256 dd43c5617911a2aafdfe73b940cc70e70b5fabad70eb63d7f2bb147e8814d67b
MD5 a8cf4f382484f2c68085bab3f6e43b9c
SHA1 80428e8089b9a512f73c77f9fac48f327dd03c71
SHA512 b740fa632e86815cbb0caf8d0ce7b4f96bd61dda3f9ef7aeefa08046f053d45eeec3aab3d325476eb5ba60fc8874e9a09cc0dbf8ebc0ab646ede947d6b9a211f
SSDEEP 24576:1T5npwJ+RcHofe3y1sInB2COzRq8DvFqt:x5dCP4suIRbDv
MD5 SHA1 SHA512 SSDEEP

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

84864

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

z:\task_1579288126\build\src\obj-firefox\toolkit\mozapps\update\updater\updater.pdb

user32

CopyRect DialogBoxParamW DrawTextW EndDialog GetClientRect GetDC GetDesktopWindow GetDlgItem GetParent GetWindowLongPtrW GetWindowRect LoadIconW OffsetRect ReleaseDC ScreenToClient SendMessageW SetTimer SetWindowLongPtrW SetWindowPos SetWindowTextW WaitForInputIdle wsprintfW

gdi32

SelectObject

advapi32

AdjustTokenPrivileges CloseServiceHandle CryptAcquireContextA CryptCreateHash CryptDestroyHash CryptDestroyKey CryptGetHashParam CryptHashData CryptReleaseContext CryptVerifySignatureA GetTokenInformation LookupPrivilegeValueA OpenProcessToken OpenSCManagerA OpenServiceW QueryServiceConfigW QueryServiceStatusEx RegCloseKey RegCreateKeyExW RegEnumKeyExW RegOpenKeyExW RegQueryInfoKeyW RegQueryValueExW RegSetValueExW StartServiceW

ole32

CoTaskMemFree

rpcrt4

RpcStringFreeW UuidCreate UuidToStringW

shell32

SHGetKnownFolderPath ShellExecuteExW

wintrust

WinVerifyTrust

shlwapi

PathAppendW PathCanonicalizeW PathCommonPrefixW PathIsUNCServerShareW PathRemoveFileSpecW PathStripPathW PathStripToRootW PathUnquoteSpacesW

kernel32

ActivateActCtx CloseHandle CompareStringW CopyFileW CreateActCtxW CreateDirectoryW CreateEventW CreateFileW CreateProcessW CreateThread DeactivateActCtx DeleteCriticalSection DeleteFileW DeviceIoControl EncodePointer EnterCriticalSection ExitProcess ExitThread FileTimeToSystemTime FindClose FindFirstFileExW FindFirstFileW FindNextFileW FlushFileBuffers FormatMessageW FreeEnvironmentStringsW FreeLibrary FreeLibraryAndExitThread GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleCP GetConsoleMode GetCurrentDirectoryW GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetDriveTypeW GetEnvironmentStringsW GetFileAttributesExW GetFileAttributesW GetFileInformationByHandle GetFileType GetFullPathNameW GetLastError GetLongPathNameW GetModuleFileNameW GetModuleHandleExW GetModuleHandleW GetOEMCP GetPrivateProfileStringW GetProcAddress GetProcessHeap GetStartupInfoW GetStdHandle GetStringTypeW GetSystemDirectoryW GetSystemInfo GetSystemTimeAsFileTime GetTickCount GetTimeZoneInformation HeapAlloc HeapFree HeapReAlloc HeapSize InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage LCMapStringW LeaveCriticalSection LoadLibraryExA LoadLibraryExW LocalAlloc LocalFree LockFile MoveFileExW MultiByteToWideChar OpenProcess PeekNamedPipe QueryPerformanceCounter RaiseException ReadConsoleW ReadFile RemoveDirectoryW ResetEvent RtlCaptureContext RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetCurrentDirectoryW SetDllDirectoryW SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFilePointer SetFilePointerEx SetLastError SetStdHandle SetUnhandledExceptionFilter Sleep SystemTimeToTzSpecificLocalTime TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter UnlockFile VirtualProtect VirtualQuery WaitForSingleObject WaitForSingleObjectEx WideCharToMultiByte WriteConsoleW WriteFile

Name

.text

Size

201KB

Virtual Size

201KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

66KB

Virtual Size

65KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

16KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.00cfg

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

96KB

Virtual Size

95KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

1.3MB

Virtual Size

1.3MB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2024-06-13_a8cf4f382484f2c68085bab3f6e43b9c_ryuk

user32

gdi32

advapi32

ole32

rpcrt4

shell32

wintrust

shlwapi

kernel32

generic