2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk

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General

Target
2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk
Size 1.4MB
Sample240529-let12aag75
SHA256 a23e22e1f490c0469c3813d1906c6d25f8f99dea72fc9117e95c0983b7c0896e
MD5 924378595ff711d7ec217d3f0efe4d48
SHA1 12a449e4d67be523071e89914ebcf8a3fff25070
SHA512 cd3eb38af631fc9d7dacbb16b0a0342df41e359d3d523762fcb82b29fdd640c0b3e59fd8333ba7dece157e7f3b3a33a38e862887cbedafe36160f0c5a8b76c47
SSDEEP 12288:gXDCAZzP/w24lhASj6kfVrlo2rby2xYAa/gP8inwfPSXFXkVYVLcZE/:7ANw243ASHfMqGAYAaoOfeUSLOo
MD5 SHA1 SHA512 SSDEEP

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk

File Explorer

2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk

.exe 1.4MB

2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk

IMPHASH 33d31a4df5121c8c368d8b7a65733fa3
SHA256 a23e22e1f490c0469c3813d1906c6d25f8f99dea72fc9117e95c0983b7c0896e
MD5 924378595ff711d7ec217d3f0efe4d48
SHA1 12a449e4d67be523071e89914ebcf8a3fff25070
SHA512 cd3eb38af631fc9d7dacbb16b0a0342df41e359d3d523762fcb82b29fdd640c0b3e59fd8333ba7dece157e7f3b3a33a38e862887cbedafe36160f0c5a8b76c47
SSDEEP 12288:gXDCAZzP/w24lhASj6kfVrlo2rby2xYAa/gP8inwfPSXFXkVYVLcZE/:7ANw243ASHfMqGAYAaoOfeUSLOo
MD5 SHA1 SHA512 SSDEEP

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

62432

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\components\maintenanceservice\maintenanceservice.pdb

user32

LoadStringA wsprintfW

advapi32

AdjustTokenPrivileges AllocateAndInitializeSid BuildExplicitAccessWithNameW ChangeServiceConfig2W ChangeServiceConfigW CloseServiceHandle ControlService CreateServiceW CreateWellKnownSid CryptAcquireContextA CryptCreateHash CryptDestroyHash CryptGetHashParam CryptHashData CryptReleaseContext DeleteService FreeSid GetEffectiveRightsFromAclW GetSecurityDescriptorDacl GetSecurityInfo InitializeSecurityDescriptor LookupAccountSidW LookupPrivilegeValueA OpenProcessToken OpenSCManagerA OpenSCManagerW OpenServiceW QueryServiceConfigW QueryServiceObjectSecurity QueryServiceStatus QueryServiceStatusEx RegCloseKey RegEnumKeyExW RegGetValueW RegOpenKeyExW RegQueryInfoKeyW RegQueryValueExW RegSetValueExW RegisterServiceCtrlHandlerW SetEntriesInAclW SetSecurityDescriptorDacl SetSecurityInfo SetServiceObjectSecurity SetServiceStatus StartServiceCtrlDispatcherW

crypt32

CertCloseStore CertFindCertificateInStore CertFreeCertificateContext CertGetNameStringA CertGetNameStringW CryptMsgClose CryptMsgGetParam CryptQueryObject

ole32

CoTaskMemFree

rpcrt4

RpcStringFreeW UuidCreate UuidToStringW

shell32

SHFileOperationW SHGetKnownFolderPath

wintrust

WinVerifyTrust

shlwapi

PathAppendW PathCanonicalizeW PathIsUNCServerShareW PathQuoteSpacesW PathRemoveFileSpecW PathStripPathW PathStripToRootW PathUnquoteSpacesW

version

GetFileVersionInfoSizeW GetFileVersionInfoW VerQueryValueW

kernel32

CloseHandle CompareStringW CopyFileW CreateDirectoryW CreateEventW CreateFileW CreateProcessW CreateThread CreateToolhelp32Snapshot DeleteCriticalSection DeleteFileW DeviceIoControl EncodePointer EnterCriticalSection ExitProcess FindClose FindFirstFileExW FindFirstFileW FindNextFileW FlushFileBuffers FreeEnvironmentStringsW FreeLibrary GetACP GetCPInfo GetCommandLineA GetCommandLineW GetConsoleCP GetConsoleMode GetCurrentProcess GetCurrentProcessId GetCurrentThreadId GetDriveTypeW GetEnvironmentStringsW GetExitCodeProcess GetFileAttributesW GetFileInformationByHandle GetFileSize GetFileType GetFullPathNameW GetLastError GetModuleFileNameW GetModuleHandleExW GetModuleHandleW GetOEMCP GetProcAddress GetProcessHeap GetStartupInfoW GetStdHandle GetStringTypeW GetSystemTimeAsFileTime HeapAlloc HeapFree HeapReAlloc HeapSize InitializeCriticalSectionAndSpinCount InitializeSListHead IsDebuggerPresent IsProcessorFeaturePresent IsValidCodePage LCMapStringW LeaveCriticalSection LoadLibraryExW LocalAlloc LocalFree MoveFileExW MoveFileW MultiByteToWideChar Process32FirstW Process32NextW QueryPerformanceCounter RaiseException ReadConsoleW ReadFile ResetEvent RtlCaptureContext RtlLookupFunctionEntry RtlPcToFileHeader RtlUnwind RtlUnwindEx RtlVirtualUnwind SetEndOfFile SetEnvironmentVariableW SetEvent SetFileAttributesW SetFilePointerEx SetLastError SetStdHandle SetUnhandledExceptionFilter Sleep TerminateProcess TlsAlloc TlsFree TlsGetValue TlsSetValue UnhandledExceptionFilter WaitForSingleObject WaitForSingleObjectEx WideCharToMultiByte WriteConsoleW WriteFile lstrcmpiW

Name

.text

Size

157KB

Virtual Size

156KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

57KB

Virtual Size

56KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

3KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

7KB

Virtual Size

6KB

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

2KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

1.2MB

Virtual Size

1.8MB

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

2024-05-29_924378595ff711d7ec217d3f0efe4d48_ryuk

user32

advapi32

crypt32

ole32

rpcrt4

shell32

wintrust

shlwapi

version

kernel32

generic