WebBrowsingOptimizer[.]exe

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General

Target

WebBrowsingOptimizer.exe
Size

7.4MB
MD5

2d4c57faa014b378c02a46af3d75261d
SHA1

e61ec734fb2fb10b31e349497d5bfacf65fd9689
SHA256

0b460a277963bb3437941746ab4e7de3dd492954e2f2082283ee505ec4fb91f6
SHA512

556547cdd00716788d610393461ded27b2df62d3d60b82c68a538953b5d9495940d3b8b06f0e8597355e9bf5a10e70502bf2326a1d4da963f3c185a9743bdfed
SSDEEP

196608:PJiWoJ+y764QSDoXj8IrEV0qBSiPDYh2tUuVGNy:P4J+ymBX/rvqDPDdGNy

Score

1^/10

Malware Config

Signatures

Files

WebBrowsingOptimizer.exe
.exe windows x86

646167cce332c1c252cdcb1839e0cf48

Code Sign

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:cc
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

12-05-2022 20:46

Not After

11-05-2023 20:46

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08-07-2011 20:59

Not After

08-07-2026 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

49:8c:92:94:f7:c8:23:eb:09:a0:42:84:c8:02:69:d4:ac:ad:42:14:65:b7:81:3f:9c:cc:09:55:6a:a0:96:42
Signer

Actual PE Digest

49:8c:92:94:f7:c8:23:eb:09:a0:42:84:c8:02:69:d4:ac:ad:42:14:65:b7:81:3f:9c:cc:09:55:6a:a0:96:42

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

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

07-02-2023 20:39
Valid: false

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
RegDeleteValueA
RegOpenKeyExA
RegQueryInfoKeyA
FreeSid
OpenProcessToken
RegSetValueExA
RegCreateKeyExA
LookupPrivilegeValueA
AllocateAndInitializeSid
RegQueryValueExA
EqualSid
RegCloseKey
AdjustTokenPrivileges

kernel32

_lopen
_llseek
CompareStringA
GetLastError
GetFileAttributesA
GetSystemDirectoryA
LoadLibraryA
DeleteFileA
GlobalAlloc
GlobalFree
CloseHandle
WritePrivateProfileStringA
IsDBCSLeadByte
GetWindowsDirectoryA
SetFileAttributesA
GetProcAddress
GlobalLock
LocalFree
RemoveDirectoryA
FreeLibrary
_lclose
CreateDirectoryA
GetPrivateProfileIntA
GetPrivateProfileStringA
GlobalUnlock
ReadFile
SizeofResource
WriteFile
GetDriveTypeA
lstrcmpA
SetFileTime
SetFilePointer
FindResourceA
CreateMutexA
GetVolumeInformationA
ExpandEnvironmentStringsA
GetCurrentDirectoryA
FreeResource
GetVersion
SetCurrentDirectoryA
GetTempPathA
LocalFileTimeToFileTime
CreateFileA
SetEvent
TerminateThread
GetVersionExA
LockResource
GetSystemInfo
CreateThread
ResetEvent
LoadResource
ExitProcess
GetModuleHandleW
CreateProcessA
FormatMessageA
GetTempFileNameA
DosDateTimeToFileTime
CreateEventA
GetExitCodeProcess
FindNextFileA
LocalAlloc
GetShortPathNameA
MulDiv
GetDiskFreeSpaceA
EnumResourceLanguagesA
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetStartupInfoW
Sleep
FindClose
GetCurrentProcess
FindFirstFileA
WaitForSingleObject
GetModuleFileNameA
LoadLibraryExA

gdi32

GetDeviceCaps

user32

SetWindowLongA
GetDlgItemTextA
DialogBoxIndirectParamA
ShowWindow
MsgWaitForMultipleObjects
SetWindowPos
GetDC
GetWindowRect
DispatchMessageA
GetDesktopWindow
CharUpperA
SetDlgItemTextA
ExitWindowsEx
MessageBeep
EndDialog
CharPrevA
LoadStringA
CharNextA
EnableWindow
ReleaseDC
SetForegroundWindow
PeekMessageA
GetDlgItem
SendMessageA
SendDlgItemMessageA
MessageBoxA
SetWindowTextA
GetWindowLongA
CallWindowProcA
GetSystemMetrics

msvcrt

_controlfp
?terminate@@YAXXZ
_acmdln
_initterm
__setusermatherr
_except_handler4_common
memcpy
_ismbblead
__p__fmode
_cexit
_exit
exit
__set_app_type
__getmainargs
_amsg_exit
__p__commode
_XcptFilter
memcpy_s
_vsnprintf
memset

comctl32

ord17

cabinet

ord22
ord23
ord21
ord20

version

GetFileVersionInfoA
VerQueryValueA
GetFileVersionInfoSizeA

Sections

.text
Size: 25KB - Virtual size: 24KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 7.4MB - Virtual size: 7.4MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

646167cce332c1c252cdcb1839e0cf48

Code Sign

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:ccCertificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

49:8c:92:94:f7:c8:23:eb:09:a0:42:84:c8:02:69:d4:ac:ad:42:14:65:b7:81:3f:9c:cc:09:55:6a:a0:96:42Signer

Signature Validations

Verification

07-02-2023 20:39 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

gdi32

user32

msvcrt

comctl32

cabinet

version

Sections

.text Size: 25KB - Virtual size: 24KB

.data Size: 512B - Virtual size: 6KB

.idata Size: 4KB - Virtual size: 4KB

.rsrc Size: 7.4MB - Virtual size: 7.4MB

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

33:00:00:02:cc:8e:b5:96:a6:bd:d1:c9:4e:00:00:00:00:02:cc
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

49:8c:92:94:f7:c8:23:eb:09:a0:42:84:c8:02:69:d4:ac:ad:42:14:65:b7:81:3f:9c:cc:09:55:6a:a0:96:42
Signer

07-02-2023 20:39
Valid: false

.text
Size: 25KB - Virtual size: 24KB

.data
Size: 512B - Virtual size: 6KB

.idata
Size: 4KB - Virtual size: 4KB

.rsrc
Size: 7.4MB - Virtual size: 7.4MB

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