medusalocker | 2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker

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General

Target
2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker
Size 1.2MB
Sample240821-bf7cmswekq
SHA256 8623772a34de4f27a2757197807de36600e759f745f52b93e8c165f9963cbacf
MD5 3fafe32b4f9f954a7268e55a0047c4be
SHA1 258095c068a78fe4169e902863eee344eaec7af5
SHA512 4c7800257ead18077f23f56be9a5d90f0f5cfaef1a0463f6ed9626ac7c0d3d894f38c8a0a75307c2ab75739093c2fb2c8d3243c3e51dd015ae21469a27ff224a
SSDEEP 12288:zmHAIqyfF/5ebyz1dpPlRnMRTD410ALP68kG3Jz4S9FUmnyJtgoiOHmabd8ornX3:qHRFfauvpPXnMKqJtfiOHmUd8QTHH
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

medusalocker

Malware Config

Signatures

MedusaLocker payload 1 IoCs

resource	yara_rule
sample	family_medusalocker

Medusalocker family
medusalocker

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker

File Explorer

2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker

.exe 1.2MB

2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker

IMPHASH e21e79f22d20e648f922d95d15e45b27
SHA256 8623772a34de4f27a2757197807de36600e759f745f52b93e8c165f9963cbacf
MD5 3fafe32b4f9f954a7268e55a0047c4be
SHA1 258095c068a78fe4169e902863eee344eaec7af5
SHA512 4c7800257ead18077f23f56be9a5d90f0f5cfaef1a0463f6ed9626ac7c0d3d894f38c8a0a75307c2ab75739093c2fb2c8d3243c3e51dd015ae21469a27ff224a
SSDEEP 12288:zmHAIqyfF/5ebyz1dpPlRnMRTD410ALP68kG3Jz4S9FUmnyJtgoiOHmabd8ornX3:qHRFfauvpPXnMKqJtfiOHmUd8QTHH
MD5 SHA1 SHA512 SSDEEP

windows:6 windows x64 arch:x64

MedusaLocker payload
Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

467040

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_GUARD_CF IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LOCAL_SYMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_32BIT_MACHINE

PDB paths

crypt32

CryptStringToBinaryA

mpr

WNetGetConnectionW

kernel32

lstrcatW Process32FirstW lstrcpyW GetCurrentProcess WaitForSingleObject CreateProcessW CreateEventW SetEvent WaitForSingleObjectEx GetLogicalDrives FindNextFileW WaitForMultipleObjects GetQueuedCompletionStatus ResumeThread PostQueuedCompletionStatus GetExitCodeThread TerminateThread CreateThread ExitProcess CreateIoCompletionPort HeapCreate HeapFree HeapLock HeapAlloc HeapDestroy Process32NextW HeapSize CreateToolhelp32Snapshot OpenProcess TerminateProcess GetShortPathNameW GetEnvironmentVariableW FlushFileBuffers WideCharToMultiByte DeleteCriticalSection DeleteFileW FindClose InitializeCriticalSection LeaveCriticalSection EnterCriticalSection FindFirstFileW GetComputerNameW OpenMutexW FindNextVolumeW GetVolumePathNamesForVolumeNameW FindVolumeClose SetVolumeMountPointW GetLastError GetVolumeNameForVolumeMountPointW CreateMutexW GetModuleFileNameW FindFirstVolumeW MoveFileW CloseHandle SetFileAttributesW CreateFileW GetProcessHeap SetEnvironmentVariableW FreeEnvironmentStringsW GetEnvironmentStringsW GetCommandLineW GetCommandLineA GetOEMCP GetACP IsValidCodePage FindFirstFileExW RtlUnwind HeapReAlloc GetTimeZoneInformation SetStdHandle GetFullPathNameW GetCurrentDirectoryW ReadConsoleW EnumSystemLocalesW GetUserDefaultLCID IsValidLocale GetTimeFormatW GetDateFormatW GetConsoleMode GetConsoleCP SetFilePointer WriteFile GetFileSizeEx ReadFile WriteConsoleW SetEndOfFile HeapUnlock SetFilePointerEx EncodePointer DecodePointer LocalFree MultiByteToWideChar GetStringTypeW SetLastError InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree GetSystemTimeAsFileTime GetModuleHandleW GetProcAddress CompareStringW LCMapStringW GetLocaleInfoW GetCPInfo RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind IsDebuggerPresent UnhandledExceptionFilter SetUnhandledExceptionFilter GetStartupInfoW IsProcessorFeaturePresent QueryPerformanceCounter GetCurrentProcessId GetCurrentThreadId InitializeSListHead RtlUnwindEx RtlPcToFileHeader RaiseException FreeLibrary LoadLibraryExW GetDriveTypeW GetFileInformationByHandle GetFileType PeekNamedPipe SystemTimeToTzSpecificLocalTime FileTimeToSystemTime GetModuleHandleExW GetStdHandle

advapi32

CryptGenKey RegOpenKeyExW RegSetValueExW RegCreateKeyExW RegCloseKey GetUserNameW CryptCreateHash CryptHashData CryptDestroyHash CryptGetHashParam CryptDestroyKey CryptAcquireContextW CryptEncrypt CryptDecrypt CryptExportKey CryptImportKey CryptReleaseContext CloseServiceHandle OpenSCManagerW DeleteService ControlService OpenProcessToken StartServiceW OpenServiceW GetTokenInformation

shell32

ShellExecuteExW SHEmptyRecycleBinW ShellExecuteW SHGetFolderPathW

oleaut32

VariantClear

rstrtmgr

RmRegisterResources RmStartSession RmShutdown RmEndSession RmGetList

netapi32

NetShareEnum NetApiBufferFree

iphlpapi

IcmpSendEcho IcmpSendEcho2 IcmpParseReplies GetAdaptersInfo IcmpCreateFile IcmpCloseHandle

ws2_32

inet_addr

Name

.text

Size

749KB

Virtual Size

749KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

179KB

Virtual Size

178KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

230KB

Virtual Size

236KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

20KB

Virtual Size

20KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

148B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.rsrc

Size

512B

Virtual Size

480B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

5KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

.bss

Size

512B

Virtual Size

512B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Sharing

General

Malware Config

Signatures

File Explorer

2024-08-21_3fafe32b4f9f954a7268e55a0047c4be_medusalocker

crypt32

mpr

kernel32

advapi32

shell32

oleaut32

rstrtmgr

netapi32

iphlpapi

ws2_32

generic