2024-04-16_1f996b004867ff0feaaae6ec6d781d4c_cobalt-strike_lockbit

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General

Target

2024-04-16_1f996b004867ff0feaaae6ec6d781d4c_cobalt-strike_lockbit
Size

200KB
MD5

1f996b004867ff0feaaae6ec6d781d4c
SHA1

103830cb27736cefe323136694674652f7b8eda2
SHA256

ff1c44a389f7ee70bd8b719f1f2005d94a875ac99f9dd1353c35ee088226db7a
SHA512

ff85a49706d2711334c7883016b79cefa14a7702d44be8c1136b85b74c4b5770f7de7011313afb5abd291ec0495e2e29a14dd0a185253c59731dd88440c58774
SSDEEP

3072:GuKxHcJSFdojJ1edaUxipkk7M6Dq3J5q1yyLwbCWZTRoQpYl7WJ5AdfMr:GjqJPfpb7l23vq1yyLwe2pOa6

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
2024-04-16_1f996b004867ff0feaaae6ec6d781d4c_cobalt-strike_lockbit

Files

2024-04-16_1f996b004867ff0feaaae6ec6d781d4c_cobalt-strike_lockbit
.exe windows:6 windows x64 arch:x64

69580f524e6d1cb537453e6cddb90f94

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
LocalAlloc
GetCurrentThreadId
OpenProcess
SetEvent
LocalFree
GetConsoleMode
GetConsoleOutputCP
GetCommandLineW
SetStdHandle
SetFilePointerEx
LoadLibraryExW
FreeLibrary
FindClose
FindNextFileW
FindFirstFileW
SetFilePointer
GetTickCount
GetModuleHandleW
GetProcAddress
WriteConsoleW
Sleep
CloseHandle
GetLastError
CreateEventW
WaitForSingleObject
SetLastError
GetModuleFileNameW
RaiseException
EncodePointer
MultiByteToWideChar
GetStringTypeW
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
LCMapStringW
FlsSetValue
FlsGetValue
DeleteCriticalSection
LeaveCriticalSection
EnterCriticalSection
HeapFree
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
GetModuleHandleExW
IsProcessorFeaturePresent
TlsSetValue
TlsGetValue
InitializeCriticalSectionAndSpinCount
GetFileInformationByHandle
WriteFile
ReadFile
ExitProcess
FlushFileBuffers
VirtualAlloc

user32

CharPrevW
GetThreadDesktop
GetShellWindow
SendMessageTimeoutW
GetWindowThreadProcessId
GetProcessWindowStation
GetUserObjectInformationW

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

SHCreateItemFromParsingName
SHAssocEnumHandlersForProtocolByApplication
SHGetKnownFolderPath
ShellExecuteExW
SHGetSpecialFolderPathW

ole32

CoCreateGuid
CoCreateInstance
CoUninitialize
CoInitializeSecurity
CoGetObject
CLSIDFromString
CoTaskMemFree
StringFromCLSID
CoInitializeEx

oleaut32

VariantInit
SysFreeString
SysAllocString
SysStringLen

rpcrt4

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

secur32

FreeCredentialsHandle
AcquireCredentialsHandleW
DeleteSecurityContext
AcceptSecurityContext
QuerySecurityContextToken
InitializeSecurityContextW

ntdll

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

comctl32

ord17

cabinet

ord13
ord14
ord11
ord10

msdelta

ApplyDeltaB
DeltaFree

bcrypt

BCryptGenerateSymmetricKey
BCryptCloseAlgorithmProvider
BCryptOpenAlgorithmProvider
BCryptDecrypt
BCryptGetProperty
BCryptDestroyKey

Sections

.text
Size: 106KB - Virtual size: 105KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 66KB - Virtual size: 66KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 7KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 500B

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

69580f524e6d1cb537453e6cddb90f94

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

advapi32

shell32

ole32

oleaut32

rpcrt4

secur32

ntdll

comctl32

cabinet

msdelta

bcrypt

Sections

.text Size: 106KB - Virtual size: 105KB

.rdata Size: 66KB - Virtual size: 66KB

.data Size: 7KB - Virtual size: 10KB

.pdata Size: 4KB - Virtual size: 4KB

_RDATA Size: 512B - Virtual size: 500B

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

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

.text
Size: 106KB - Virtual size: 105KB

.rdata
Size: 66KB - Virtual size: 66KB

.data
Size: 7KB - Virtual size: 10KB

.pdata
Size: 4KB - Virtual size: 4KB

_RDATA
Size: 512B - Virtual size: 500B

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

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