efsui[.]exe | Triage

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General

Target

efsui.exe
Size

36KB
MD5

a0c486d7c1c8dcc73685ec61d89bb838
SHA1

4f0bc1a7d96632f5dde2fab1f901e509de2fd143
SHA256

c2364495bb476b8e54cf350ea9bd338618591dc2c3161d9814fee2003dd61421
SHA512

e910d17429896ae2f3451b7ce5ab0739b9e088fec8db133e15193ef1a5428b482882fc766714980642917f5e7fb11f503b418903474c915037ae300553c942b7
SSDEEP

384:5k5WTVXFLJphaXTZKz1a/OZIhTRWSTRW:5kEJFL7haXdEU/OZUTx

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
efsui.exe

Files

efsui.exe
.exe windows:10 windows x64 arch:x64

79780253655b3282fd06ea62fca2f32f

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

advapi32

GetTokenInformation
ConvertSidToStringSidW
OpenProcessToken

kernel32

GetCommandLineW
GetCurrentProcess
GetLastError
CreateMutexW
CloseHandle
LocalAlloc
LocalFree

msvcrt

_commode
_acmdln
__C_specific_handler
?terminate@@YAXXZ
__getmainargs
_XcptFilter
_wcsicmp
_fmode
_vsnwprintf
_initterm
__setusermatherr
__set_app_type
exit
_exit
_cexit
_ismbblead
_amsg_exit

efsadu

EfsUIUtilEncryptMyDocuments
EfsUIUtilInstallDra
EfsUIUtilSelectCard
EfsUIUtilShowBalloonAndWait
EfsUIUtilPromptForPin
EfsUIUtilEnrollEfsCertificate
EfsUIUtilKeyBackup

crypt32

CryptBinaryToStringW
CryptStringToBinaryW
CertFreeCertificateContext

api-ms-win-core-synch-l1-2-0

Sleep

api-ms-win-core-processthreads-l1-1-0

GetStartupInfoW
GetCurrentProcessId
TerminateProcess
GetCurrentThreadId

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter

api-ms-win-core-libraryloader-l1-2-0

GetModuleHandleW

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime
GetTickCount

api-ms-win-core-rtlsupport-l1-1-0

RtlLookupFunctionEntry
RtlCaptureContext
RtlVirtualUnwind

efsutil

EfsUtilGetCurrentKey

ntdll

RtlImageNtHeader

shell32

CommandLineToArgvW

Sections

.text
Size: 8KB - Virtual size: 5KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 8KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 288B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 48B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

79780253655b3282fd06ea62fca2f32f

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

msvcrt

efsadu

crypt32

api-ms-win-core-synch-l1-2-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-libraryloader-l1-2-0

api-ms-win-core-profile-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-rtlsupport-l1-1-0

efsutil

ntdll

shell32

Sections

.text Size: 8KB - Virtual size: 5KB

.rdata Size: 8KB - Virtual size: 4KB

.data Size: 4KB - Virtual size: 1KB

.pdata Size: 4KB - Virtual size: 288B

.rsrc Size: 4KB - Virtual size: 1KB

.reloc Size: 4KB - Virtual size: 48B

.text
Size: 8KB - Virtual size: 5KB

.rdata
Size: 8KB - Virtual size: 4KB

.data
Size: 4KB - Virtual size: 1KB

.pdata
Size: 4KB - Virtual size: 288B

.rsrc
Size: 4KB - Virtual size: 1KB

.reloc
Size: 4KB - Virtual size: 48B