efsui[.]exe | Triage

Sharing

Copy URL Twitter E-mail

General

Target

efsui.exe
Size

36KB
MD5

064ea68495f3cb7ccc57c7185f197e92
SHA1

a61114e5da70198553c7f92e6d41ad1ac17455d6
SHA256

2db9447c094387d33e06b4f768afce02f4dbb40f2dd979155639841c9df44f44
SHA512

cb24d5e92fea665e6e69464d68c2dff3c57831c58f5f04e3c3c91e7b8e1d583047986ed2f3208a054a7a6441719f132b447a6c7ab944a488bc58a80066e5dfad
SSDEEP

384:4/UjDpXxU4j/9O2ovOJ3mmc4jmPZiTNWS7RW:6EXU4L9O0J3RcAmPZiTN

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

PDB Paths

efsui.pdb

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: 44B

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

PDB Paths

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: 44B

.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: 44B