DIFXAPI[.]dll | Triage

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General

Target

DIFXAPI.dll
Size

386KB
MD5

116eaa5c9bb2cce346a42eafde2dc152
SHA1

13c433306ebdafcd983410482fd42685bebadeb9
SHA256

57afba202253a7736e7296ca9ad606b9640ad6f5e9c231ee291f511dd469c783
SHA512

57d2ce75bd4a645eda5a9a77a6e92789cc527412722b2fcdcbb271c0d6eb8014b596d16e9ed0e72c9e1153e60549d13be2241fbd13223779dd9596e52ee8f944
SSDEEP

6144:JHgITHmqcxAsIJUBCMabxedMh0hPu/REr/IRWJNat:tgIdc3WUQtcdQSe5mNe

Score

1^/10

Malware Config

Signatures

Files

DIFXAPI.dll
.dll windows x64

e7ab56179c4dfa01bf9e705ee2a86072

Code Sign

33:00:00:00:88:15:52:51:cf:17:37:7b:55:00:00:00:00:00:88
Certificate

Issuer

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

07/10/2015, 18:14

Not After

07/01/2017, 18:14

Subject

CN=Microsoft Time-Stamp Service,OU=MOPR+OU=nCipher DSE ESN:7AFA-E41C-E142,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0a
Certificate

Issuer

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

04/06/2015, 17:42

Not After

04/09/2016, 17:42

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:33:26:1a:00:00:00:00:00:31
Certificate

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Not Before

31/08/2010, 22:19

Not After

31/08/2020, 22:29

Subject

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

61:16:68:34:00:00:00:00:00:1c
Certificate

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Not Before

03/04/2007, 12:53

Not After

03/04/2021, 13:03

Subject

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:00:00:00:7b:a2:81:0b:87:11:ab:e7:fc:00:00:00:00:00:7b
Certificate

Issuer

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

01/10/2014, 18:06

Not After

01/01/2016, 18:06

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:0c:52:4c:00:00:00:00:00:03
Certificate

Issuer

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

Not Before

06/07/2010, 20:40

Not After

06/07/2025, 20:50

Subject

CN=Microsoft Code Signing PCA 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

e5:c9:60:91:b1:e8:60:d0:3e:b1:59:91:f8:1a:a6:42:4d:d3:5e:67:d4:4e:ef:f3:31:c3:47:63:0f:a3:21:fe
Signer

Actual PE Digest

e5:c9:60:91:b1:e8:60:d0:3e:b1:59:91:f8:1a:a6:42:4d:d3:5e:67:d4:4e:ef:f3:31:c3:47:63:0f:a3:21:fe

Digest Algorithm

sha256

PE Digest Matches

true

dc:63:21:9a:35:05:44:78:3d:a7:16:49:4b:8a:78:53:d7:0d:28:4f
Signer

Actual PE Digest

dc:63:21:9a:35:05:44:78:3d:a7:16:49:4b:8a:78:53:d7:0d:28:4f

Digest Algorithm

sha1

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

Imports

msvcrt

_lock
??1type_info@@UEAA@XZ
__C_specific_handler
_initterm
_amsg_exit
_XcptFilter
_unlock
_resetstkoflw
memcpy
memcmp
__dllonexit
_onexit
memset
_callnewh
iswdigit
__CxxFrameHandler3
_CxxThrowException
vswprintf_s
_vscwprintf
wcsrchr
wcspbrk
_wcsnicmp
iswalpha
?_set_se_translator@@YAP6AXIPEAU_EXCEPTION_POINTERS@@@ZP6AXI0@Z@Z
_wcslwr_s
_wcsupr_s
wcsstr
wcschr
memmove_s
memcpy_s
_wcsicmp
_vsnwprintf
malloc
free
wcscmp

ntdll

RtlNtStatusToDosError
VerSetConditionMask
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind

kernel32

GetThreadLocale
CompareStringOrdinal
LCMapStringW
WaitForSingleObjectEx
HeapReAlloc
HeapAlloc
HeapFree
GetModuleHandleW
InitializeCriticalSection
HeapDestroy
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
GetLastError
lstrcmpiW
SizeofResource
LockResource
LoadResource
FindResourceExW
lstrlenW
SetLastError
LoadLibraryW
GetProcAddress
FreeLibrary
GetVersionExW
SetFileAttributesW
DeleteFileW
GetFullPathNameW
GetFileAttributesW
CreateDirectoryW
GetTempFileNameW
MoveFileExW
CreateFileW
CloseHandle
FindFirstFileW
lstrcmpW
FindNextFileW
FindClose
RemoveDirectoryW
GetCurrentProcess
GetFileSize
CreateFileMappingW
MapViewOfFile
MultiByteToWideChar
UnmapViewOfFile
CopyFileW
GetSystemWindowsDirectoryW
GetEnvironmentVariableW
WideCharToMultiByte
CompareStringW
LocalFree
GetSystemDirectoryW
LocalAlloc
LocalReAlloc
CreateMutexW
WaitForSingleObject
ReleaseMutex
DeviceIoControl
GetSystemTimeAsFileTime
GetProcessHeap
Sleep
HeapSize
RaiseException
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetTickCount
SetEndOfFile
SetFilePointer
WaitForMultipleObjectsEx
SetEvent
CreateEventW
VerifyVersionInfoW

user32

UnregisterClassA
CharLowerW

setupapi

SetupPromptReboot
SetupInstallFromInfSectionW
SetupInstallServicesFromInfSectionW
SetupFindNextLine
SetupFindNextMatchLineW
SetupGetStringFieldW
SetupGetIntField
SetupGetFieldCount
SetupGetLineCountW
SetupCloseFileQueue
SetupInitDefaultQueueCallbackEx
SetupTermDefaultQueueCallback
SetupQueueCopyW
SetupCommitFileQueueW
SetupDefaultQueueCallbackW
SetupDiDestroyDeviceInfoList
SetupDiGetClassDevsW
SetupGetTargetPathW
SetupDiOpenClassRegKey
CM_Enumerate_Classes
SetupDiEnumDeviceInfo
SetupDiGetDeviceRegistryPropertyW
CM_Get_Device_ID_ListW
SetupInstallFilesFromInfSectionW
CM_Locate_DevNodeW
CM_Get_DevNode_Status
CM_Query_And_Remove_SubTreeW
CM_Setup_DevNode
SetupDiSetDeviceRegistryPropertyW
CM_Get_Device_IDW
SetupDiOpenDevRegKey
SetupDiGetDeviceInstanceIdW
SetupDiCreateDeviceInfoList
SetupDiGetDeviceInstallParamsW
SetupDiSetDeviceInstallParamsW
SetupDiBuildDriverInfoList
SetupDiCallClassInstaller
SetupDiGetSelectedDriverW
SetupDiGetDriverInfoDetailW
SetupDiSetClassInstallParamsW
SetupDiOpenDeviceInfoW
SetupDiSetSelectedDevice
SetupDiClassNameFromGuidW
SetupDiGetActualSectionToInstallW
SetupCloseInfFile
SetupOpenInfFileW
SetupCopyOEMInfW
SetupOpenFileQueue
SetupFindFirstLineW
CM_Get_Device_ID_List_SizeW
pSetupGetGlobalFlags
pSetupSetGlobalFlags
SetupOpenAppendInfFileW

advapi32

RegDeleteValueW
RegCloseKey
AllocateAndInitializeSid
CheckTokenMembership
FreeSid
InitializeAcl
AddAccessAllowedAce
RegOpenKeyExW
InitializeSecurityDescriptor
SetSecurityDescriptorDacl
SetEntriesInAclW
GetLengthSid
QueryServiceStatus
OpenSCManagerW
OpenServiceW
ControlService
CloseServiceHandle
DeleteService
StartServiceW
RegCreateKeyExW
RegSetValueExW
RegQueryValueExW
RegDeleteKeyW

ole32

CoUninitialize
StringFromCLSID
CoTaskMemFree
CoCreateInstance
CoInitialize

wintrust

CryptCATAdminCalcHashFromFileHandle
WinVerifyTrust

crypt32

CertFreeCTLContext
CryptQueryObject
CertGetCTLContextProperty
CertFreeCertificateContext

Exports

Exports

DIFXAPISetLogCallbackA
DIFXAPISetLogCallbackW
DriverPackageGetPathA
DriverPackageGetPathW
DriverPackageInstallA
DriverPackageInstallW
DriverPackagePreinstallA
DriverPackagePreinstallW
DriverPackageUninstallA
DriverPackageUninstallW
SetDifxLogCallbackA
SetDifxLogCallbackW

Sections

.text
Size: 241KB - Virtual size: 240KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 120KB - Virtual size: 119KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 180B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e7ab56179c4dfa01bf9e705ee2a86072

Code Sign

33:00:00:00:88:15:52:51:cf:17:37:7b:55:00:00:00:00:00:88Certificate

Extended Key Usages

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0aCertificate

Extended Key Usages

61:33:26:1a:00:00:00:00:00:31Certificate

Key Usages

61:16:68:34:00:00:00:00:00:1cCertificate

Extended Key Usages

Key Usages

33:00:00:00:7b:a2:81:0b:87:11:ab:e7:fc:00:00:00:00:00:7bCertificate

Extended Key Usages

61:0c:52:4c:00:00:00:00:00:03Certificate

Key Usages

e5:c9:60:91:b1:e8:60:d0:3e:b1:59:91:f8:1a:a6:42:4d:d3:5e:67:d4:4e:ef:f3:31:c3:47:63:0f:a3:21:feSigner

dc:63:21:9a:35:05:44:78:3d:a7:16:49:4b:8a:78:53:d7:0d:28:4fSigner

Headers

DLL Characteristics

File Characteristics

Imports

msvcrt

ntdll

kernel32

user32

setupapi

advapi32

ole32

wintrust

crypt32

Exports

Exports

Sections

.text Size: 241KB - Virtual size: 240KB

.rdata Size: 120KB - Virtual size: 119KB

.data Size: 512B - Virtual size: 2KB

.pdata Size: 6KB - Virtual size: 5KB

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

.reloc Size: 512B - Virtual size: 180B

33:00:00:00:88:15:52:51:cf:17:37:7b:55:00:00:00:00:00:88
Certificate

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0a
Certificate

61:33:26:1a:00:00:00:00:00:31
Certificate

61:16:68:34:00:00:00:00:00:1c
Certificate

33:00:00:00:7b:a2:81:0b:87:11:ab:e7:fc:00:00:00:00:00:7b
Certificate

61:0c:52:4c:00:00:00:00:00:03
Certificate

e5:c9:60:91:b1:e8:60:d0:3e:b1:59:91:f8:1a:a6:42:4d:d3:5e:67:d4:4e:ef:f3:31:c3:47:63:0f:a3:21:fe
Signer

dc:63:21:9a:35:05:44:78:3d:a7:16:49:4b:8a:78:53:d7:0d:28:4f
Signer

.text
Size: 241KB - Virtual size: 240KB

.rdata
Size: 120KB - Virtual size: 119KB

.data
Size: 512B - Virtual size: 2KB

.pdata
Size: 6KB - Virtual size: 5KB

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

.reloc
Size: 512B - Virtual size: 180B