efsui[.]exe | Triage

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General

Target

efsui.exe
Size

12KB
MD5

bcb88eed0cd8632a6167427d8032c39c
SHA1

52e9d30b60af28e5e65223e5894517aef9d3f638
SHA256

c2935b32480bac58583d4c1d9d7ed79743e07af3877d93d343c59bd37de8d0b6
SHA512

051b73d38f37db3ba17c09cadefe6e1178e0e1f5db081488665086a1ca4634d16fbf960c6deb6af407584ebbb157498425fa4d4a26bc2e67bcba65042bc3bd4f
SSDEEP

192:/K12seXxtzKHMWKFO8c7MrycCOq/AyGJElpVsKuqkTFWSHxRWn:g2sqxtyKFO86Mmc+/AyGOVCdTFWSHxRU

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
efsui.exe

Files

efsui.exe
.exe windows x86

88f5b8a224e2f6213bcef481dff428b6

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

advapi32

GetTokenInformation
OpenProcessToken
ConvertSidToStringSidW

kernel32

UnhandledExceptionFilter
TerminateProcess
GetSystemTimeAsFileTime
GetCurrentProcessId
GetCurrentThreadId
QueryPerformanceCounter
GetModuleHandleA
GetStartupInfoA
InterlockedCompareExchange
Sleep
InterlockedExchange
GetTickCount
LocalAlloc
CloseHandle
GetCommandLineW
LocalFree
GetLastError
CreateMutexW
GetCurrentProcess
SetUnhandledExceptionFilter

msvcrt

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

crypt32

CryptStringToBinaryW
CertFreeCertificateContext
CryptBinaryToStringW

shell32

CommandLineToArgvW

efsadu

EfsUIUtilKeyBackup
EfsUIUtilSelectCard
EfsUIUtilPromptForPin
EfsUIUtilEnrollEfsCertificate
EfsUIUtilInstallDra
EfsUIUtilEncryptMyDocuments
EfsUIUtilShowBalloonAndWait

efsutil

EfsUtilGetCurrentKey

ntdll

RtlAllocateHeap
RtlImageNtHeader
RtlFreeHeap

Sections

.text
Size: 7KB - Virtual size: 7KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 920B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 604B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

88f5b8a224e2f6213bcef481dff428b6

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

msvcrt

crypt32

shell32

efsadu

efsutil

ntdll

Sections

.text Size: 7KB - Virtual size: 7KB

.data Size: 512B - Virtual size: 920B

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

.reloc Size: 1024B - Virtual size: 604B

.text
Size: 7KB - Virtual size: 7KB

.data
Size: 512B - Virtual size: 920B

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

.reloc
Size: 1024B - Virtual size: 604B