2024-03-16_a7744905e9088df1f645501530a1a6e0_lockbit

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General

Target

2024-03-16_a7744905e9088df1f645501530a1a6e0_lockbit
Size

157KB
MD5

a7744905e9088df1f645501530a1a6e0
SHA1

b4615cbbe0c9e8d8f11c758ab35068f9d1983a95
SHA256

9cd1c16dc9b0b5bd4d834881d89f6330d44e62876036d023f830c5fbd0699c39
SHA512

d8492056d1e59d3980fee3fc1f33267ae67a48f5ecbd5841529699469ad217d5990295463376260fd3aa830f5c4037a64e8392e111380228f3f62ff1231111ad
SSDEEP

3072:PvQROcgIWNBM2YeF1ijkDzMdlDsDAQ2pYl7/P/r3BRMr:P4Kc2TZMdeDAlpOfl

Score

10^/10

Malware Config

Signatures

Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCOM

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
2024-03-16_a7744905e9088df1f645501530a1a6e0_lockbit

Files

2024-03-16_a7744905e9088df1f645501530a1a6e0_lockbit
.exe windows:6 windows x64 arch:x64

d9e4615b3b865b518fccf94766fbf0cd

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

kernel32

GetTempPathA
CreateFileA
DeleteFileA
FileTimeToLocalFileTime
WideCharToMultiByte
GetTempFileNameA
FileTimeToDosDateTime
HeapCreate
HeapAlloc
HeapDestroy
CreateFileW
DeleteFileW
CreateDirectoryW
CompareFileTime
TerminateProcess
RemoveDirectoryW
SetEndOfFile
ResumeThread
MoveFileExW
CreateProcessW
GetFileTime
GetExitCodeProcess
CopyFileW
GetFileAttributesW
LoadLibraryW
GetCurrentDirectoryW
SetCurrentDirectoryW
GetStartupInfoW
WaitForDebugEvent
InitializeProcThreadAttributeList
ContinueDebugEvent
UpdateProcThreadAttribute
DeleteProcThreadAttributeList
TerminateThread
CreateThread
SetThreadPriority
VirtualFree
GetCurrentProcess
GetCommandLineW
GetCurrentThreadId
OpenProcess
SetEvent
LocalFree
GetStringTypeW
GetCPInfo
SetFilePointer
GetACP
IsValidCodePage
LoadLibraryExW
FreeLibrary
FindClose
FindNextFileW
FindFirstFileW
GetTickCount
GetModuleHandleW
GetProcAddress
Sleep
CloseHandle
GetLastError
CreateEventW
WaitForSingleObject
SetLastError
GetModuleFileNameW
LCMapStringW
LeaveCriticalSection
EnterCriticalSection
HeapFree
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
GetModuleHandleExW
IsProcessorFeaturePresent
TlsSetValue
TlsGetValue
GetFileInformationByHandle
WriteFile
ReadFile
GetOEMCP
ExitProcess
LocalAlloc
VirtualAlloc
MultiByteToWideChar

user32

GetShellWindow
GetThreadDesktop
CharPrevW
GetUserObjectInformationW
GetProcessWindowStation
SendMessageTimeoutW
GetWindowThreadProcessId

advapi32

RegQueryInfoKeyW
RevertToSelf
RegSetKeyValueW
CreateWellKnownSid
RegFlushKey
RegEnumKeyExW
RegOpenKeyW
CreateProcessAsUserW
RegRenameKey
RegDeleteKeyW
RegCreateKeyW
RegCloseKey
ImpersonateLoggedOnUser
CloseServiceHandle
OpenSCManagerW
RegCreateKeyExW
RegSetValueExW
StartServiceW
RegOpenKeyExW
RegDeleteValueW
OpenServiceW
QueryServiceStatusEx
RegEnumValueW

shell32

SHGetSpecialFolderPathW
SHGetKnownFolderPath
ShellExecuteExW
SHCreateItemFromParsingName
SHAssocEnumHandlersForProtocolByApplication

ole32

CoCreateGuid
CoCreateInstance
CoUninitialize
CoInitializeSecurity
CoGetObject
CLSIDFromString
CoTaskMemFree
StringFromCLSID
CoInitializeEx

oleaut32

SysAllocString
SysStringLen
VariantInit
SysFreeString

rpcrt4

UuidCreateNil
NdrAsyncClientCall
RpcBindingFree
RpcStringBindingComposeW
RpcAsyncCompleteCall
RpcAsyncInitializeHandle
RpcRaiseException
UuidCompare
UuidFromStringW
RpcBindingFromStringBindingW
NdrClientCall2
RpcStringFreeW
RpcBindingSetAuthInfoExW

secur32

DeleteSecurityContext
QuerySecurityContextToken
InitializeSecurityContextW
FreeCredentialsHandle
AcquireCredentialsHandleW
AcceptSecurityContext

ntdll

NtDeleteKey
RtlNtStatusToDosErrorNoTeb
NtFreeVirtualMemory
RtlInitializeSid
RtlDestroyHeap
RtlAllocateHeap
NtQuerySystemInformation
RtlSubAuthoritySid
RtlCreateBoundaryDescriptor
LdrGetDllHandle
NtQueryInformationProcess
RtlDeleteBoundaryDescriptor
NtOpenProcess
LdrFindResource_U
NtReadFile
NtQueryInformationToken
NtAllocateVirtualMemory
LdrEnumerateLoadedModules
RtlPrefixUnicodeString
NtDeleteValueKey
RtlLengthRequiredSid
RtlAcquirePebLock
NtSetValueKey
RtlPushFrame
NtFsControlFile
RtlGetCurrentPeb
NtCreatePrivateNamespace
DbgUiSetThreadDebugObject
NtDeletePrivateNamespace
NtOpenThreadToken
RtlFreeHeap
RtlRaiseStatus
RtlSetHeapInformation
RtlCreateHeap
LdrFindEntryForAddress
RtlAddSIDToBoundaryDescriptor
RtlReleasePebLock
RtlExpandEnvironmentStrings_U
NtQueryValueKey
LdrAccessResource
RtlUnwindEx
RtlFreeSid
NtCreateKey
RtlFormatCurrentUserKeyPath
NtOpenKey
RtlAppendUnicodeToString
RtlAppendUnicodeStringToString
NtDeleteFile
NtMapViewOfSection
RtlPopFrame
NtNotifyChangeDirectoryFile
RtlGetFrame
NtWaitForSingleObject
NtCreateFile
NtSetEvent
RtlDosPathNameToNtPathName_U
RtlFreeUnicodeString
RtlGetVersion
NtTerminateProcess
NtUnmapViewOfSection
NtCreateEvent
NtClose
RtlInitUnicodeString
RtlRandomEx
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
RtlEqualUnicodeString
NtCreateSection
RtlComputeCrc32
NtDuplicateObject
RtlLengthSid
RtlAllocateAndInitializeSid
NtSetInformationToken
NtRemoveProcessDebug
NtDuplicateToken
NtQueryInformationFile
NtOpenProcessToken
RtlImageDirectoryEntryToData
RtlExitUserProcess
RtlQueryElevationFlags
LdrGetDllHandleEx
NtCompressKey
RtlImageNtHeader

comctl32

ord17

cabinet

ord13
ord14
ord11
ord10

msdelta

ApplyDeltaB
DeltaFree

bcrypt

BCryptCloseAlgorithmProvider
BCryptOpenAlgorithmProvider
BCryptDecrypt
BCryptGetProperty
BCryptDestroyKey
BCryptGenerateSymmetricKey

Sections

.text
Size: 80KB - Virtual size: 79KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 52KB - Virtual size: 52KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 3KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 12KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

d9e4615b3b865b518fccf94766fbf0cd

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

shell32

ole32

oleaut32

rpcrt4

secur32

ntdll

comctl32

cabinet

msdelta

bcrypt

Sections

.text Size: 80KB - Virtual size: 79KB

.rdata Size: 52KB - Virtual size: 52KB

.data Size: 6KB - Virtual size: 8KB

.pdata Size: 3KB - Virtual size: 2KB

_RDATA Size: 512B - Virtual size: 348B

.rsrc Size: 12KB - Virtual size: 12KB

.reloc Size: 2KB - Virtual size: 1KB

.text
Size: 80KB - Virtual size: 79KB

.rdata
Size: 52KB - Virtual size: 52KB

.data
Size: 6KB - Virtual size: 8KB

.pdata
Size: 3KB - Virtual size: 2KB

_RDATA
Size: 512B - Virtual size: 348B

.rsrc
Size: 12KB - Virtual size: 12KB

.reloc
Size: 2KB - Virtual size: 1KB