efsui[.]exe | Triage

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General

Target

efsui.exe
Size

12KB
MD5

2c63942af7bc19d6b2a17531606bf4a0
SHA1

4fa2b03fd50951f9a80ef474c6f271130e557ea5
SHA256

7f2c563395004f8f3a6997f7d46da58a98627cb1fc6bbb0f0f035e3c7d395a60
SHA512

204b703244ccbaa80aa6bb4ef0d77668cb589164dd4ce91b9fa4372e37ca35e1227ff9e1db3102f92783da2c56834e7f9288aeb37b693aefba6c2999e1a570f4
SSDEEP

192:VemAdpZNvsK2oZQTaAYaY6xQNZOkThWSTRWk5:VgTZNvs/uQTfYwWZJThWSTRWk

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
efsui.exe

Files

efsui.exe
.exe windows x86

fbfcdb62e39168bd77f5a0d82001c66c

Headers

DLL Characteristics

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_32BIT_MACHINE

Imports

advapi32

GetTokenInformation
ConvertSidToStringSidW
OpenProcessToken

kernel32

LocalFree
CreateMutexW
CloseHandle
GetCurrentProcess
GetCommandLineW
GetLastError
LocalAlloc

msvcrt

_amsg_exit
_XcptFilter
_vsnwprintf
_except_handler4_common
_controlfp
?terminate@@YAXXZ
_acmdln
_initterm
__setusermatherr
_wcsicmp
_ismbblead
__p__fmode
__getmainargs
__set_app_type
exit
_exit
_cexit
__p__commode

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

GetCurrentThreadId
GetCurrentProcessId
GetStartupInfoW
TerminateProcess

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

efsutil

EfsUtilGetCurrentKey

ntdll

RtlImageNtHeader

shell32

CommandLineToArgvW

Sections

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

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 992B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 2KB - Virtual size: 2KB

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: 460B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

fbfcdb62e39168bd77f5a0d82001c66c

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

efsutil

ntdll

shell32

Sections

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

.data Size: 512B - Virtual size: 992B

.idata Size: 2KB - Virtual size: 2KB

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

.reloc Size: 512B - Virtual size: 460B

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

.data
Size: 512B - Virtual size: 992B

.idata
Size: 2KB - Virtual size: 2KB

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

.reloc
Size: 512B - Virtual size: 460B