DismApi[.]dll | Triage

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General

Target

DismApi.dll
Size

809KB
MD5

56d99e12a5c5c0f7cb9290b173b4ac9e
SHA1

a76aace279d117562569c5dd74fad6d2ffd0dd50
SHA256

04b0554e26bfb6c8da02f1cc0bd0dbdb140aa26dfba46ecf5f5fa8e35ff1f02e
SHA512

f9c2a6fa9c2027337054081125390114d5f30e61136555014f20f3304f0ede14b0a85090e30ab9e70ee3fff8d3928c47b133776be0bef3cd470d97d64b217cf8
SSDEEP

12288:MW5JOZWEdiyisiVcqlYBexnIIlgFOBt0TedrYDVdVyW8Q/pMZ4:SJiyisiVcqGBexnKIB+yW8Q/pMZ4

Score

1^/10

Malware Config

Signatures

Files

DismApi.dll
.dll windows:10 windows x86 arch:x86

76a18d6390436e57b906409accedf9d5

Code Sign

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3c
Certificate

Issuer

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

Not Before

02/09/2021, 18:23

Not After

01/09/2022, 18:23

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

fd:c4:af:05:f4:8b:61:23:2d:5e:6b:24:90:66:52:d8:3d:9f:e1:04:db:e1:74:d1:b9:0a:ac:2f:76:d7:df:65
Signer

Actual PE Digest

fd:c4:af:05:f4:8b:61:23:2d:5e:6b:24:90:66:52:d8:3d:9f:e1:04:db:e1:74:d1:b9:0a:ac:2f:76:d7:df:65

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP
IMAGE_FILE_NET_RUN_FROM_SWAP
IMAGE_FILE_DLL

PDB Paths

DismApi.pdb

Imports

msvcrt

towlower
wcsstr
wcsrchr
_snwscanf_s
_wcsnicmp
fclose
wcstok_s
_wfopen
_wcslwr_s
strrchr
_vsnwprintf
iswctype
_ftol2
memcmp
realloc
_errno
fgetws
_onexit
__dllonexit
_unlock
_lock
_except_handler4_common
?terminate@@YAXXZ
_initterm
_amsg_exit
_XcptFilter
memmove
memcpy
_CxxThrowException
?what@exception@@UBEPBDXZ
??1exception@@UAE@XZ
??0exception@@QAE@ABV0@@Z
??0exception@@QAE@ABQBDH@Z
??0exception@@QAE@ABQBD@Z
_callnewh
wcscpy_s
_wcstoui64
wcstoul
iswspace
swscanf_s
_wtoi
wcschr
iswalpha
_wcsicmp
_purecall
_vscprintf
feof
??1type_info@@UAE@XZ
vsprintf_s
calloc
_vsnprintf
malloc
free
vswprintf_s
_vscwprintf
memmove_s
memcpy_s
??_V@YAXPAX@Z
__CxxFrameHandler3
??3@YAXPAX@Z
memset

advapi32

OpenProcessToken
CheckTokenMembership
RegCloseKey
RegCreateKeyExW
RegSetValueExW
RegOpenKeyExW
RegQueryValueExW
AllocateAndInitializeSid
OpenThreadToken
GetTokenInformation
AddAccessAllowedAce
EqualSid
FreeSid
InitializeAcl
SetSecurityDescriptorDacl
InitializeSecurityDescriptor
RegisterTraceGuidsW
GetTraceEnableLevel
GetTraceEnableFlags
GetTraceLoggerHandle
TraceEvent
UnregisterTraceGuids
GetLengthSid

kernel32

GetSystemTime
MoveFileExW
GetTimeFormatEx
GetLocaleInfoEx
TlsSetValue
UnmapViewOfFile
TlsAlloc
GetLocalTime
GetFileSize
ExitProcess
SetErrorMode
GetVersionExW
GetProcAddress
GetModuleHandleW
InitializeCriticalSection
DeleteCriticalSection
RaiseException
EnterCriticalSection
LeaveCriticalSection
GetCurrentThreadId
GetCurrentProcessId
SizeofResource
LockResource
LoadResource
FindResourceExW
OutputDebugStringW
GetThreadUILanguage
OutputDebugStringA
GetModuleHandleExW
GetLastError
GetModuleFileNameW
FreeLibrary
WideCharToMultiByte
LoadLibraryExW
HeapFree
GetProcessHeap
WaitForMultipleObjectsEx
WaitForSingleObject
FormatMessageW
TlsGetValue
GetSystemInfo
GetCommandLineW
GetFileAttributesW
IsWow64Process
GetCurrentProcess
CompareStringW
FileTimeToLocalFileTime
FileTimeToSystemTime
HeapSize
HeapReAlloc
HeapAlloc
HeapDestroy
GetEnvironmentVariableW
MultiByteToWideChar
Sleep
QueryPerformanceCounter
GetSystemTimeAsFileTime
GetTickCount
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
GetFinalPathNameByHandleW
CreateEventW
ResumeThread
DuplicateHandle
GetTempFileNameW
ResetEvent
CreateThread
SetEvent
ExpandEnvironmentStringsW
SetLastError
CreateDirectoryW
CloseHandle
CreateFileW
SetFilePointer
GetFullPathNameW
ReadFile
GetSystemWindowsDirectoryW
TlsFree
FormatMessageA
CreateFileMappingW
MapViewOfFile
VirtualQuery
GetModuleFileNameA
WriteFile
CreateMutexW
CreateMutexA
ReleaseMutex
GetFileSizeEx
GetCurrentThread
FlushFileBuffers
CopyFileExW
DeleteFileW
SetFileInformationByHandle
GetFileInformationByHandle
SetFileAttributesW
FindClose
DeviceIoControl
FindNextFileW
FindFirstFileW
GetFileInformationByHandleEx
GetVersion
CreateFileA
DeleteFileA
CreateFileMappingA
DebugBreak
GetModuleHandleExA
GetWindowsDirectoryW
IsDebuggerPresent
SearchPathW
LocalFree

ole32

StringFromGUID2
CoSetProxyBlanket
CoInitializeEx
CoUninitialize
CoCreateInstance

user32

CharLowerBuffW

oleaut32

VarBstrCmp
SafeArrayGetUBound
SafeArrayGetLBound
SafeArrayGetElemsize
VariantTimeToSystemTime
SafeArrayDestroy
SafeArrayUnaccessData
SafeArrayAccessData
SafeArrayCreate
LoadTypeLi
LoadRegTypeLi
SysStringLen
SafeArrayGetDim
SysAllocStringByteLen
SysStringByteLen
GetErrorInfo
SysAllocString
SysFreeString
VariantClear
SysAllocStringLen
VarBstrCat
SystemTimeToVariantTime

ntdll

NtReadFile
RtlReAllocateHeap
NtClose
RtlExpandEnvironmentStrings
NtQueryInformationFile
NtWaitForSingleObject
NtOpenFile
RtlRaiseStatus
RtlInitUnicodeString
DbgPrintEx
RtlDowncaseUnicodeChar
NtYieldExecution
RtlFreeHeap
RtlAllocateHeap
RtlGetVersion
RtlNtStatusToDosError
NtSetInformationFile
RtlDosPathNameToNtPathName_U_WithStatus
NtWriteFile

version

GetFileVersionInfoSizeExW
GetFileVersionInfoExW
VerQueryValueW

Exports

Exports

DismAddCapability
DismAddDriver
DismAddPackage
DismAddProvisionedAppxPackage
DismApplyUnattend
DismCheckImageHealth
DismCleanupMountpoints
DismCloseSession
DismCommitImage
DismDelete
DismDisableFeature
DismEnableFeature
DismGetCapabilities
DismGetCapabilityInfo
DismGetDriverInfo
DismGetDrivers
DismGetFeatureInfo
DismGetFeatureParent
DismGetFeatures
DismGetImageInfo
DismGetLastErrorMessage
DismGetMountedImageInfo
DismGetPackageInfo
DismGetPackageInfoEx
DismGetPackages
DismGetProvisionedAppxPackages
DismGetReservedStorageState
DismInitialize
DismMountImage
DismOpenSession
DismRemountImage
DismRemoveCapability
DismRemoveDriver
DismRemovePackage
DismRemoveProvisionedAppxPackage
DismRestoreImageHealth
DismSetReservedStorageState
DismShutdown
DismUnmountImage
_DismAddAppxPackageFamilyToUninstallBlocklist
_DismAddCapabilityEx
_DismAddDriverEx
_DismAddPackageEx
_DismAddPackageFamilyToUninstallBlocklist
_DismAddProvisionedAppxPackage
_DismApplyCustomDataImage
_DismApplyFfuImage
_DismApplyProvisioningPackage
_DismCleanImage
_DismEnableDisableFeature
_DismExportDriver
_DismExportSource
_DismExportSourceEx
_DismGetCapabilitiesEx
_DismGetCapabilityInfoEx
_DismGetCurrentEdition
_DismGetDriversEx
_DismGetEffectiveSystemUILanguage
_DismGetFeaturesEx
_DismGetInstallLanguage
_DismGetKCacheBinaryValue
_DismGetKCacheDwordValue
_DismGetKCacheStringValue
_DismGetLastCBSSessionID
_DismGetNonRemovableAppsPolicy
_DismGetNonRemovableAppxAppsPolicy
_DismGetOSUninstallWindow
_DismGetOsInfo
_DismGetPackageInfoEx
_DismGetProductKeyInfo
_DismGetProvisionedAppxPackages
_DismGetProvisioningPackageInfo
_DismGetRegistryMountPoint
_DismGetStateFromCBSSessionID
_DismGetTargetCompositionEditions
_DismGetTargetEditions
_DismGetTargetVirtualEditions
_DismGetTemplateAbsolutePath
_DismGetTemplateString
_DismGetUsedSpace
_DismInitiateOSUninstall
_DismOptimizeImage
_DismOptimizeProvisionedAppxPackages
_DismRemoveAppxPackageFamilyFromUninstallBlocklist
_DismRemoveOSUninstall
_DismRemovePackageFamilyFromUninstallBlocklist
_DismRemoveProvisionedAppxPackage
_DismRemoveProvisionedAppxPackageAllUsers
_DismRevertPendingActions
_DismSetAllIntlSettings
_DismSetAppXProvisionedDataFile
_DismSetAppxProvisionedDataFile
_DismSetEdition
_DismSetEdition2
_DismSetFirstBootCommandLine
_DismSetMachineName
_DismSetOSUninstallWindow
_DismSetProductKey
_DismSetSkuIntlDefaults
_DismSetTemplateString
_DismSplitFfuImage
_DismStage
_DismSysprepCleanup
_DismSysprepGeneralize
_DismSysprepSpecialize
_DismValidateProductKey

Sections

.text
Size: 726KB - Virtual size: 725KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 8KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 6KB - Virtual size: 6KB

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: 46KB - Virtual size: 46KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

76a18d6390436e57b906409accedf9d5

Code Sign

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3cCertificate

Extended Key Usages

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

Key Usages

fd:c4:af:05:f4:8b:61:23:2d:5e:6b:24:90:66:52:d8:3d:9f:e1:04:db:e1:74:d1:b9:0a:ac:2f:76:d7:df:65Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

advapi32

kernel32

ole32

user32

oleaut32

ntdll

version

Exports

Exports

Sections

.text Size: 726KB - Virtual size: 725KB

.data Size: 8KB - Virtual size: 9KB

.idata Size: 6KB - Virtual size: 6KB

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

.reloc Size: 46KB - Virtual size: 46KB

33:00:00:03:3c:89:c6:6a:7b:45:bb:1f:bd:00:00:00:00:03:3c
Certificate

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

fd:c4:af:05:f4:8b:61:23:2d:5e:6b:24:90:66:52:d8:3d:9f:e1:04:db:e1:74:d1:b9:0a:ac:2f:76:d7:df:65
Signer

.text
Size: 726KB - Virtual size: 725KB

.data
Size: 8KB - Virtual size: 9KB

.idata
Size: 6KB - Virtual size: 6KB

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

.reloc
Size: 46KB - Virtual size: 46KB