2024-01-26_b434627da0a9cdaa97471a295e613659_lockbit

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General

Target

2024-01-26_b434627da0a9cdaa97471a295e613659_lockbit
Size

346KB
MD5

b434627da0a9cdaa97471a295e613659
SHA1

89f40c3974ebd0cfa420e20eaf5da50cafc53005
SHA256

8ce411d2de4bd0af43e2492137c2450f8f60ff2fc3cf2b4ee77a724f642b7fbb
SHA512

6314bc24294ff6f15e15e7456d56f04c7a812fa875bfd4215e7e351c50f3bc1b409dbc5d03ef7192d5ede8de6512ea71bb5506bc38c11118ed918719f006c056
SSDEEP

6144:qhZ76vmBN1T9gitzFE7kFTBD086zn6xqdJ:eZ2uBSCKKxq6xGJ

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

Files

2024-01-26_b434627da0a9cdaa97471a295e613659_lockbit
.exe windows:6 windows x64 arch:x64

d28746a5cc9de8d1c4daf56b5980f585

Code Sign

b7:13:81:63:ec:16:f3:7a:20:0e:bf:37:44:1e:99:d6:dd:58:bc:e7
Certificate

Issuer

CN=Ascertia Public CA 1,O=Ascertia,C=GB

Not Before

29/06/2018, 08:45

Not After

29/07/2018, 08:45

Subject

CN=Microsoft\ ,C=UK,1.2.840.113549.1.9.1=#0c184d49435230533046544070726f746f6e6d61696c2e636f6d

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

e6
Certificate

Issuer

CN=Ascertia Root CA 2,O=Ascertia,C=GB

Not Before

21/04/2009, 12:15

Not After

14/04/2028, 23:59

Subject

CN=Ascertia Public CA 1,O=Ascertia,C=GB

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

4e:b0:87:8f:cc:24:35:36:b2:d8:c9:f7:bf:39:55:77
Certificate

Issuer

CN=UTN-USERFirst-Object,OU=http://www.usertrust.com,O=The USERTRUST Network,L=Salt Lake City,ST=UT,C=US

Not Before

31/12/2015, 00:00

Not After

09/07/2019, 18:40

Subject

CN=COMODO SHA-256 Time Stamping Signer,O=COMODO CA Limited,L=Salford,ST=Greater Manchester,C=GB

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

94:cf:71:df:e8:26:2b:6d:2e:eb:d8:14:81:c0:4f:ea:ed:88:36:50:60:2e:8f:18:d2:06:07:91:36:fe:6e:cf
Signer

Actual PE Digest

94:cf:71:df:e8:26:2b:6d:2e:eb:d8:14:81:c0:4f:ea:ed:88:36:50:60:2e:8f:18:d2:06:07:91:36:fe:6e:cf

Digest Algorithm

sha256

PE Digest Matches

true

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

CreateFileMappingW
MapViewOfFile
UnmapViewOfFile
FreeLibrary
CopyFileW
OutputDebugStringW
GetStartupInfoW
TerminateThread
GetSystemInfo
VirtualQuery
HeapCreate
HeapDestroy
HeapAlloc
HeapReAlloc
HeapFree
GetCurrentProcessId
CreateDirectoryW
OpenThread
SuspendThread
VirtualFree
GetThreadContext
SetThreadContext
FlushInstructionCache
VirtualProtect
CreateToolhelp32Snapshot
Thread32First
Thread32Next
OpenProcess
MultiByteToWideChar
RaiseException
IsDebuggerPresent
IsProcessorFeaturePresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetFileSizeEx
FindNextFileW
FindFirstFileW
FindClose
CreateFileW
DeleteFileW
CreateThread
WaitForSingleObject
GetProcAddress
SetLastError
WideCharToMultiByte
FileTimeToDosDateTime
CloseHandle
GetTempFileNameA
GetFileAttributesW
TerminateProcess
ResumeThread
Sleep
GetTempPathA
WriteFile
SetFilePointer
ReadFile
GetFileInformationByHandle
FileTimeToLocalFileTime
DeleteFileA
CreateFileA
LoadLibraryW
GetCurrentProcess
GetLastError
GetCommandLineW
LoadLibraryExW
GetModuleHandleW
GetModuleFileNameW
ExitProcess
GetCurrentThreadId
VirtualAlloc
GetProcessHeap

user32

GetThreadDesktop
GetWindowThreadProcessId
LoadImageW
DefWindowProcW
PostQuitMessage
GetMessageW
TranslateMessage
DispatchMessageW
GetDC
CreateWindowExW
RegisterClassExW
UnregisterClassW
SendMessageW
FindWindowW
GetDesktopWindow
MessageBoxW
GetProcessWindowStation
GetUserObjectInformationW

gdi32

SetPixelFormat
SwapBuffers
ChoosePixelFormat

advapi32

RegEnumValueW
RegOpenKeyW
RegEnumKeyExW
CreateProcessAsUserW
CreateProcessWithLogonW
RegCopyTreeW
RegQueryInfoKeyW
RegOpenKeyExW
RegCloseKey
RegCreateKeyW
RegQueryValueExW
RegFlushKey
RegDeleteValueW
RegSetValueExW
RegDeleteKeyW
RegCreateKeyExW

shell32

ShellExecuteExW
SHCreateItemFromParsingName

ole32

StringFromGUID2
CoCreateGuid
IIDFromString
CoTaskMemFree
CoGetObject
CoInitialize
StringFromCLSID
CLSIDFromString
CoCreateInstance

oleaut32

SafeArrayCreateVector
SafeArrayUnaccessData
SafeArrayAccessData
SafeArrayDestroy
SysFreeString
SysAllocString

vcruntime140d

memset
__vcrt_LoadLibraryExW
memchr
__C_specific_handler
memcpy
memcmp
__vcrt_GetModuleHandleW
__vcrt_GetModuleFileNameW

ucrtbased

_wsplitpath_s
_wmakepath_s
__stdio_common_vsprintf_s
strcat_s
strcpy_s
_CrtDbgReportW
_CrtDbgReport
wcscpy_s

ntdll

RtlInitUnicodeString
RtlEncodePointer
RtlDecodePointer
NtOpenKey
NtTerminateProcess
NtSuspendProcess
NtResumeProcess
NtSetValueKey
RtlFreeSid
RtlAllocateAndInitializeSid
RtlLengthSid
RtlNtStatusToDosError
RtlSetLastWin32Error
NtOpenProcessToken
NtSetEvent
NtCreateEvent
NtQueryInformationToken
NtSetInformationToken
NtOpenProcess
NtSetInformationThread
NtDeleteFile
LdrAccessResource
LdrFindResource_U
LdrGetProcedureAddress
RtlInitString
RtlPrefixUnicodeString
RtlExpandEnvironmentStrings_U
RtlFormatCurrentUserKeyPath
LdrEnumerateLoadedModules
RtlAllocateHeap
RtlFreeHeap
RtlImageDirectoryEntryToData
RtlEnterCriticalSection
RtlLeaveCriticalSection
NtQuerySystemInformation
NtCreateDirectoryObject
NtFsControlFile
NtReadFile
NtQueryInformationFile
NtQueryValueKey
NtQueryInformationProcess
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
RtlDosPathNameToNtPathName_U
RtlFreeUnicodeString
NtFreeVirtualMemory
NtAllocateVirtualMemory
RtlDecompressBuffer
RtlQueryElevationFlags
RtlCreateHeap
RtlGetVersion
RtlGetFrame
RtlPopFrame
RtlPushFrame
RtlImageNtHeader
LdrGetDllHandle
NtNotifyChangeDirectoryFile
NtCreateFile
NtWaitForSingleObject
RtlGetCurrentPeb
NtClose
NtFilterToken
NtDuplicateToken

apphelp

SdbCloseDatabaseWrite
SdbBeginWriteListTag
SdbWriteStringTag
SdbEndWriteListTag
SdbWriteBinaryTag
SdbWriteDWORDTag
SdbCreateDatabase

opengl32

glDrawPixels
glDrawBuffer
glColor4i
glLoadIdentity
glMatrixMode
glReadPixels
glVertex2i
glBegin
wglCreateContext
glEnd
glClear
wglMakeCurrent

comctl32

ord17

cabinet

ord13
ord11
ord10
ord14

msdelta

ApplyDeltaB
GetDeltaInfoB
DeltaFree

Sections

.textbss
Size: - Virtual size: 68KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.text
Size: 157KB - Virtual size: 157KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 78KB - Virtual size: 77KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 11KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rtc
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.00cfg
Size: 512B - Virtual size: 319B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 70KB - Virtual size: 70KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

d28746a5cc9de8d1c4daf56b5980f585

Code Sign

b7:13:81:63:ec:16:f3:7a:20:0e:bf:37:44:1e:99:d6:dd:58:bc:e7Certificate

Extended Key Usages

Key Usages

e6Certificate

Key Usages

4e:b0:87:8f:cc:24:35:36:b2:d8:c9:f7:bf:39:55:77Certificate

Extended Key Usages

Key Usages

94:cf:71:df:e8:26:2b:6d:2e:eb:d8:14:81:c0:4f:ea:ed:88:36:50:60:2e:8f:18:d2:06:07:91:36:fe:6e:cfSigner

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

shell32

ole32

oleaut32

vcruntime140d

ucrtbased

ntdll

apphelp

opengl32

comctl32

cabinet

msdelta

Sections

.textbss Size: - Virtual size: 68KB

.text Size: 157KB - Virtual size: 157KB

.rdata Size: 78KB - Virtual size: 77KB

.data Size: 4KB - Virtual size: 11KB

.pdata Size: 11KB - Virtual size: 11KB

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

.rtc Size: 2KB - Virtual size: 2KB

.00cfg Size: 512B - Virtual size: 319B

.rsrc Size: 70KB - Virtual size: 70KB

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

b7:13:81:63:ec:16:f3:7a:20:0e:bf:37:44:1e:99:d6:dd:58:bc:e7
Certificate

e6
Certificate

4e:b0:87:8f:cc:24:35:36:b2:d8:c9:f7:bf:39:55:77
Certificate

94:cf:71:df:e8:26:2b:6d:2e:eb:d8:14:81:c0:4f:ea:ed:88:36:50:60:2e:8f:18:d2:06:07:91:36:fe:6e:cf
Signer

.textbss
Size: - Virtual size: 68KB

.text
Size: 157KB - Virtual size: 157KB

.rdata
Size: 78KB - Virtual size: 77KB

.data
Size: 4KB - Virtual size: 11KB

.pdata
Size: 11KB - Virtual size: 11KB

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

.rtc
Size: 2KB - Virtual size: 2KB

.00cfg
Size: 512B - Virtual size: 319B

.rsrc
Size: 70KB - Virtual size: 70KB

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