D:\Education\locker\bin\stub_win_x86_decrypter.pdb
Behavioral task
behavioral1
Sample
564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6.exe
Resource
win10v2004-20240226-en
General
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Target
564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6.sample
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Size
277KB
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MD5
f739f6865c55f938aedc8786bd8fa941
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SHA1
992323180ff9a232c8726625ccb064470dad7fa7
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SHA256
564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6
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SHA512
5f883ed6266a31b29a629193f6a139f83b26a0862fd3e25d9dcd2469d54a63433f472afca3b862f22b3e0e6ec09cbad4fbb9b4229b993fb6343c132329220957
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SSDEEP
6144:SZ1gm4z+Rp4PCL8YM6c2G/FtmUPvo39UPdENN4:il4qnM6c26s39HNN4
Malware Config
Signatures
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MedusaLocker payload 1 IoCs
Processes:
resource yara_rule sample family_medusalocker -
Medusalocker family
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Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
Processes:
resource 564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6.sample
Files
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564dd895beba4f060b55d76a578baea5b63ec9a81bbef4e72cd6d499d37f6dc6.sample.exe windows:6 windows x86 arch:x86
979e883220a6bc4d790e8029de6a2531
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
PDB Paths
Imports
crypt32
CryptStringToBinaryW
shlwapi
PathIsUNCW
PathFindExtensionW
StrStrIW
mpr
WNetGetConnectionW
WNetAddConnection2W
kernel32
GetLogicalDrives
FindFirstVolumeW
SetVolumeMountPointW
FindVolumeClose
GetVolumePathNamesForVolumeNameW
DeleteVolumeMountPointW
FindNextVolumeW
GetDriveTypeW
ReadFile
QueryThreadpoolStackInformation
CloseThreadpool
FindFirstFileExW
FindNextFileW
WriteFile
SetEndOfFile
FindClose
CreateFileW
CloseThreadpoolCleanupGroup
CloseThreadpoolCleanupGroupMembers
SetFilePointerEx
GetConsoleWindow
lstrcmpiW
SetConsoleTitleW
GetWindowsDirectoryW
SizeofResource
GetCurrentProcess
InitializeProcThreadAttributeList
WaitForSingleObject
OpenProcess
MultiByteToWideChar
UpdateProcThreadAttribute
LockResource
LoadResource
FindResourceW
CreateProcessW
GetModuleHandleW
WideCharToMultiByte
GetEnvironmentStringsW
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
GetFileSizeEx
GetFileAttributesExW
GetExitCodeProcess
CloseHandle
GetLastError
CreateJobObjectW
SetInformationJobObject
FreeEnvironmentStringsW
SetEnvironmentVariableW
GetProcessHeap
SetStdHandle
GetStringTypeW
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
HeapSize
HeapReAlloc
DecodePointer
QueryDosDeviceW
MoveFileW
LocalFree
FormatMessageA
GetLocaleInfoEx
WaitForSingleObjectEx
Sleep
GetCurrentThreadId
GetExitCodeThread
RaiseException
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
WakeAllConditionVariable
SleepConditionVariableSRW
GetProcAddress
QueryPerformanceCounter
QueryPerformanceFrequency
InitializeCriticalSectionEx
GetSystemTimeAsFileTime
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
SetEvent
ResetEvent
CreateEventW
IsProcessorFeaturePresent
IsDebuggerPresent
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetStartupInfoW
GetCurrentProcessId
InitializeSListHead
TerminateProcess
RtlUnwind
SetLastError
EncodePointer
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
CreateThread
ExitThread
FreeLibraryAndExitThread
GetModuleHandleExW
ExitProcess
GetModuleFileNameW
GetStdHandle
GetCommandLineA
GetCommandLineW
HeapFree
HeapAlloc
GetFileType
CompareStringW
LCMapStringW
WriteConsoleW
user32
GetWindowThreadProcessId
GetAsyncKeyState
RegisterWindowMessageW
ShowWindow
IsWindowVisible
GetShellWindow
advapi32
RegSetValueExW
OpenProcessToken
GetTokenInformation
CryptDestroyKey
CryptGetKeyParam
CryptAcquireContextW
CryptDecrypt
CryptImportKey
CryptReleaseContext
RegCloseKey
RegCreateKeyExW
Sections
.text Size: 209KB - Virtual size: 209KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 51KB - Virtual size: 51KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 4KB - Virtual size: 23KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 2KB - Virtual size: 1KB
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