shellext[.]dll

Resubmissions

13/05/2024, 19:17

240513-xzjxcaae5x 7

13/05/2024, 19:15

240513-xyqnhaae2z 7

Sharing

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General

Target

shellext.dll
Size

328KB
MD5

21cd99ec6e67cd91c6acd2b17d66f753
SHA1

b96ded013a0dcf4a502c105e55d965204861ea9d
SHA256

691cf5b193f29b04464ee900829166d97840d6261252023a9c0461ee87789f21
SHA512

286e98a2db19d8595e2512a6ffb73a3e664e27cd88d84b1d93f3d4485e18ab050b5678dddbbb4a4791de45a6390fa4b53fd367b22f7854f806291d8422d75212
SSDEEP

6144:cxPygvRSMF063q4acni8CrNL2ocAYHdU5hvterhS8/dR:cxPyU0iq4aqBCpLnYKWHdR

Score

1^/10

Malware Config

Signatures

Files

shellext.dll
.dll regsvr32 windows:10 windows x64 arch:x64

eaacc0f6e81b6f7f91e48cb3d2bf9c8c

Code Sign

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

03/02/2023, 00:05

Not After

01/02/2024, 00:05

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

a4:1c:1b:26:73:47:b5:00:b6:86:b6:c9:da:98:39:3a:a7:bb:de:40:46:9b:cd:6b:23:65:5e:49:82:e8:b5:e6
Signer

Actual PE Digest

a4:1c:1b:26:73:47:b5:00:b6:86:b6:c9:da:98:39:3a:a7:bb:de:40:46:9b:cd:6b:23:65:5e:49:82:e8:b5:e6

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_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DLL

PDB Paths

shellext.pdb

Imports

msvcrt

wcstoul
_vscwprintf
vswprintf_s
iswalpha
wcsrchr
_wcsnicmp
wcsncmp
wcschr
_vsnwprintf
wcsstr
_wcsicmp
_wchmod
swprintf_s
_vsnprintf
bsearch
??1type_info@@UEAA@XZ
_onexit
__dllonexit
_unlock
_lock
?terminate@@YAXXZ
realloc
_errno
_initterm
_amsg_exit
_XcptFilter
memmove
memcpy
_CxxThrowException
??0exception@@QEAA@AEBQEBD@Z
??0exception@@QEAA@XZ
calloc
memmove_s
??0exception@@QEAA@AEBV0@@Z
??0exception@@QEAA@AEBQEBDH@Z
??1exception@@UEAA@XZ
?what@exception@@UEBAPEBDXZ
wcsncpy_s
malloc
free
_purecall
wcscat_s
wcscpy_s
memcpy_s
__C_specific_handler
__CxxFrameHandler3
memset

kernel32

GetTickCount
OutputDebugStringA
UnmapViewOfFile
SearchPathW
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
RtlVirtualUnwind
RtlLookupFunctionEntry
RtlCaptureContext
Sleep
LoadLibraryExW
lstrcmpiW
FreeLibrary
GetModuleHandleW
DeleteCriticalSection
GetProcAddress
LoadResource
FindResourceExW
RaiseException
GetLastError
MultiByteToWideChar
InitializeCriticalSection
LeaveCriticalSection
GetThreadLocale
GetModuleFileNameW
EnterCriticalSection
SetThreadLocale
SizeofResource
CreateProcessW
WaitForSingleObject
CloseHandle
LockResource
CreateEventW
GetUserDefaultUILanguage
SwitchToThread
GetDriveTypeW
SetErrorMode
GetVolumeInformationW
FindClose
GlobalFindAtomW
GetVersionExW
GetLocalTime
SystemTimeToFileTime
GetNativeSystemInfo
SetLastError
ProcessIdToSessionId
GetSystemDefaultUILanguage
WritePrivateProfileStringW
GetPrivateProfileIntW
GetPrivateProfileStringW
GetExitCodeThread
ResetEvent
SetEvent
CreateThread
MoveFileW
GetLongPathNameW
GetFileSizeEx
GetFileSize
WriteFile
ReadFile
CreateFileW
VerifyVersionInfoW
K32GetModuleFileNameExW
HeapFree
GetProcessHeap
HeapAlloc
DeleteFileW
RemoveDirectoryW
FindNextFileW
FindFirstFileW
FreeResource
FindResourceW
Process32NextW
Process32FirstW
CreateToolhelp32Snapshot
OpenProcess
GetDiskFreeSpaceExW
GetSystemDirectoryW
GetWindowsDirectoryW
GetExitCodeProcess
LocalFree
IsWow64Process
ReleaseMutex
CreateMutexW
GetLocaleInfoW
CopyFileW
GetTempFileNameW
GetTempPathW
CreateDirectoryW
GetSystemDefaultLCID
MoveFileExW
InitializeCriticalSectionAndSpinCount
GetFileAttributesW
CreateFileMappingW
MapViewOfFile
DisableThreadLibraryCalls
VirtualLock
HeapSize
HeapReAlloc
HeapDestroy
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
WakeAllConditionVariable
SleepConditionVariableSRW
EncodePointer
DecodePointer

oleaut32

SysAllocStringByteLen
VarUI4FromStr
SysStringLen
SysAllocString
RegisterTypeLi
SysFreeString
LoadTypeLi
UnRegisterTypeLi
SysAllocStringLen
VarBstrCat
VariantInit
VariantClear
SysStringByteLen

advapi32

GetSecurityDescriptorSacl
RegDeleteKeyW
ConvertStringSecurityDescriptorToSecurityDescriptorW
RegQueryValueExW
OpenProcessToken
GetTokenInformation
GetSidSubAuthorityCount
DuplicateTokenEx
GetSidSubAuthority
AllocateAndInitializeSid
CheckTokenMembership
OpenSCManagerW
OpenServiceW
ChangeServiceConfigW
ControlService
QueryServiceStatus
LookupPrivilegeValueW
PrivilegeCheck
AdjustTokenPrivileges
InitiateSystemShutdownExW
LookupPrivilegeNameW
CreateProcessAsUserW
FreeSid
TraceMessage
CloseServiceHandle
GetLengthSid
IsValidSid
EqualSid
InitializeAcl
AddAce
GetAclInformation
GetAce
GetSecurityDescriptorOwner
GetSecurityDescriptorGroup
GetSecurityDescriptorDacl
CopySid
MakeSelfRelativeSD
GetSecurityDescriptorLength
GetSecurityDescriptorControl
GetNamedSecurityInfoW
SetNamedSecurityInfoW
ConvertStringSidToSidW
QueryServiceConfigW
GetTraceLoggerHandle
GetTraceEnableFlags
GetTraceEnableLevel
RegisterTraceGuidsW
UnregisterTraceGuids
RegCloseKey
RegQueryInfoKeyW
RegCreateKeyExW
RegEnumKeyExW
RegSetValueExW
RegOpenKeyExW
RegDeleteValueW

ole32

ReleaseStgMedium
CoTaskMemFree
CoCreateInstance
StringFromGUID2
CoTaskMemAlloc
CoCreateGuid
CoTaskMemRealloc

user32

UnregisterClassA
LoadImageW
CharNextW
DrawIconEx
SendMessageW
GetWindowThreadProcessId
MessageBoxW
DestroyIcon
AllowSetForegroundWindow
GetLastActivePopup
FindWindowExW
GetSystemMetrics
GetIconInfo
GetDesktopWindow
GetDC
GetSysColor
GetActiveWindow
ReleaseDC
InsertMenuW
SetMenuItemBitmaps
AdjustWindowRectEx
PostThreadMessageW
IsDialogMessageW
KillTimer
SetTimer
SetForegroundWindow
FindWindowW
SetWindowTextW
PostMessageW
LoadStringW
ShowWindow
DestroyWindow
LoadIconW
CreateDialogParamW

shell32

SHChangeNotify
ShellExecuteW
DragQueryFileW
SHGetFolderPathW
SHGetPathFromIDListW
SHGetSpecialFolderLocation

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW

userenv

DestroyEnvironmentBlock
CreateEnvironmentBlock
UnloadUserProfile

wtsapi32

WTSQuerySessionInformationW
WTSQueryUserToken
WTSEnumerateSessionsW
WTSFreeMemory

gdi32

GetObjectW
CreateCompatibleDC
CreateCompatibleBitmap
SelectObject
SetBkColor
ExtTextOutW
DeleteDC
DeleteObject

shlwapi

PathMatchSpecW
PathIsDirectoryW
PathIsRelativeW
PathFindFileNameW
PathIsRootW
PathAppendW
PathRemoveFileSpecW
PathCombineW
PathFileExistsW

wintrust

WTHelperProvDataFromStateData
CryptCATAdminReleaseCatalogContext
WTHelperGetProvSignerFromChain
CryptCATAdminCalcHashFromFileHandle
CryptCATAdminReleaseContext
CryptCATCatalogInfoFromContext
CryptCATAdminEnumCatalogFromHash
WinVerifyTrust
CryptCATAdminAcquireContext

crypt32

CertVerifyCertificateChainPolicy

ntdll

RtlGetVersion
RtlNtStatusToDosError

Exports

Exports

DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

Sections

.text
Size: 181KB - Virtual size: 181KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 101KB - Virtual size: 101KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 15KB - Virtual size: 17KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 11KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Resubmissions

Sharing

General

Malware Config

Signatures

Files

eaacc0f6e81b6f7f91e48cb3d2bf9c8c

Code Sign

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13Certificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

a4:1c:1b:26:73:47:b5:00:b6:86:b6:c9:da:98:39:3a:a7:bb:de:40:46:9b:cd:6b:23:65:5e:49:82:e8:b5:e6Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

kernel32

oleaut32

advapi32

ole32

user32

shell32

version

userenv

wtsapi32

gdi32

shlwapi

wintrust

crypt32

ntdll

Exports

Exports

Sections

.text Size: 181KB - Virtual size: 181KB

.rdata Size: 101KB - Virtual size: 101KB

.data Size: 15KB - Virtual size: 17KB

.pdata Size: 11KB - Virtual size: 10KB

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

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

33:00:00:04:13:31:bc:19:88:07:a9:07:74:00:00:00:00:04:13
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

a4:1c:1b:26:73:47:b5:00:b6:86:b6:c9:da:98:39:3a:a7:bb:de:40:46:9b:cd:6b:23:65:5e:49:82:e8:b5:e6
Signer

.text
Size: 181KB - Virtual size: 181KB

.rdata
Size: 101KB - Virtual size: 101KB

.data
Size: 15KB - Virtual size: 17KB

.pdata
Size: 11KB - Virtual size: 10KB

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

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