webex[.]exe | Triage

Sharing

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General

Target

webex.exe
Size

385KB
MD5

4cb2f364c2d436f3ec64dc93bacf26c5
SHA1

b9192d27c570233f95e0f322690a0e1b8b6227fd
SHA256

519ed1f6ed31d886ecd2b8c0b7286fc86ad4fa6ca234e6d4377e30662c3d7f88
SHA512

6a591b3dfc5ed4b2220f433c8f4f1cbd29dd8994a691e4a4c2e3d3b5cd6299233607abc2e3d3c5847d0da0ad648c52c43f68bd0103a82f0419cdaa3fa3dcd74b
SSDEEP

6144:5whe2IkUcmlDS7+8UVQP4NulHc6uIUZdUXj6huLhusfMZK:eIkUcmlDS7+VVQP06uIUZdUTMsDfMZK

Score

1^/10

Malware Config

Signatures

Files

webex.exe
.exe windows x86

03bb4209ef4709eaef7e694990576817

Code Sign

06:f0:ee:0c:79:c4:dc:ba:d0:cd:a9:7d:d0:7b:95:3c
Certificate

Issuer

CN=DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1,O=DigiCert\, Inc.,C=US

Not Before

22/09/2022, 00:00

Not After

22/09/2023, 23:59

Subject

CN=Cisco WebEx LLC,O=Cisco WebEx LLC,L=San Jose,ST=California,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

d5:08:52:25:47:00:d3:39:3e:11:95:44:9a:0a:f0:b1:85:10:18:09:d9:7f:82:2a:af:a1:e9:69:4a:60:2c:7b
Signer

Actual PE Digest

d5:08:52:25:47:00:d3:39:3e:11:95:44:9a:0a:f0:b1:85:10:18:09:d9:7f:82:2a:af:a1:e9:69:4a:60:2c:7b

Digest Algorithm

sha256

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=Cisco WebEx LLC,O=Cisco WebEx LLC,L=San Jose,ST=California,C=US

06/04/2023, 09:37
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

wintrust

WinVerifyTrust

wininet

HttpSendRequestA
InternetCrackUrlA
InternetOpenA
HttpQueryInfoA
InternetCloseHandle
HttpOpenRequestA
InternetSetOptionW
InternetSetOptionA
InternetReadFile
InternetConnectA

version

GetFileVersionInfoA
GetFileVersionInfoSizeA
VerQueryValueW

uxtheme

SetWindowTheme

kernel32

LCMapStringW
GetCommandLineA
GetTempPathA
GetTempFileNameA
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
GetModuleFileNameA
GetModuleHandleW
GetUserDefaultLCID
SetThreadUILanguage
GetThreadUILanguage
CreateFileA
FlushFileBuffers
WriteFile
CloseHandle
InitializeCriticalSection
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
GetLocalTime
MapViewOfFile
UnmapViewOfFile
CreateFileMappingA
DecodePointer
RaiseException
GetLastError
InitializeCriticalSectionEx
lstrlenW
MultiByteToWideChar
WideCharToMultiByte
SetLastError
LocalFree
FormatMessageW
WaitForSingleObject
Sleep
CreateThread
TerminateThread
GetFileSize
ReadFile
SetFilePointer
CreateProcessA
GetNativeSystemInfo
SetEvent
CreateEventW
GetProcAddress
GetVersionExW
FreeLibrary
LoadLibraryW
lstrcpynW
GetSystemDefaultLangID
GetCommandLineW
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
GetFileType
HeapAlloc
HeapFree
GetStdHandle
GetModuleFileNameW
GetModuleHandleExW
ExitProcess
QueryPerformanceFrequency
LoadLibraryExW
TlsFree
GetEnvironmentStringsW
TlsSetValue
TlsGetValue
TlsAlloc
EncodePointer
RtlUnwind
OutputDebugStringW
InitializeSListHead
QueryPerformanceCounter
GetStartupInfoW
IsDebuggerPresent
WaitForSingleObjectEx
ResetEvent
InitializeCriticalSectionAndSpinCount
IsProcessorFeaturePresent
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetProcessHeap
FreeEnvironmentStringsW
SetStdHandle
GetStringTypeW
HeapSize
HeapReAlloc
SetFilePointerEx
GetConsoleOutputCP
GetConsoleMode
CreateFileW
OpenEventW
WriteConsoleW

user32

MonitorFromPoint
GetCursorPos
LoadIconW
LoadCursorW
GetWindowThreadProcessId
SetWindowLongW
GetWindowLongW
SetCursor
MessageBoxExW
SetWindowTextW
SetWindowTextA
SetPropW
SetPropA
ReleaseDC
GetDC
SetForegroundWindow
GetForegroundWindow
SetActiveWindow
UpdateWindow
GetMonitorInfoW
SetTimer
SetFocus
DefDlgProcW
GetDlgItem
CreateDialogParamW
BringWindowToTop
ShowWindow
DestroyWindow
CreateWindowExW
RegisterClassW
AttachThreadInput
SendMessageW
LoadStringW
FindWindowExA
GetDesktopWindow
WaitForInputIdle
MessageBoxExA
PostQuitMessage
PostMessageW
LoadStringA
DispatchMessageW
TranslateMessage
GetMessageW
KillTimer
SetWindowPos

gdi32

GetTextExtentPoint32W
SelectObject
SetTextColor
CreateFontIndirectW
GetDeviceCaps
DeleteObject
GetStockObject

shell32

SHGetFolderPathA

advapi32

RegCloseKey
RegOpenKeyExW
RegQueryValueExW
ConvertStringSecurityDescriptorToSecurityDescriptorW

urlmon

ObtainUserAgentString

comctl32

InitCommonControlsEx

Sections

.text
Size: 150KB - Virtual size: 149KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 45KB - Virtual size: 45KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 9B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 174KB - Virtual size: 173KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

03bb4209ef4709eaef7e694990576817

Code Sign

06:f0:ee:0c:79:c4:dc:ba:d0:cd:a9:7d:d0:7b:95:3cCertificate

Extended Key Usages

Key Usages

d5:08:52:25:47:00:d3:39:3e:11:95:44:9a:0a:f0:b1:85:10:18:09:d9:7f:82:2a:af:a1:e9:69:4a:60:2c:7bSigner

Signature Validations

Verification

06/04/2023, 09:37 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

wintrust

wininet

version

uxtheme

kernel32

user32

gdi32

shell32

advapi32

urlmon

comctl32

Sections

.text Size: 150KB - Virtual size: 149KB

.rdata Size: 45KB - Virtual size: 45KB

.data Size: 3KB - Virtual size: 6KB

.tls Size: 512B - Virtual size: 9B

.rsrc Size: 174KB - Virtual size: 173KB

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

06:f0:ee:0c:79:c4:dc:ba:d0:cd:a9:7d:d0:7b:95:3c
Certificate

d5:08:52:25:47:00:d3:39:3e:11:95:44:9a:0a:f0:b1:85:10:18:09:d9:7f:82:2a:af:a1:e9:69:4a:60:2c:7b
Signer

06/04/2023, 09:37
Valid: false

.text
Size: 150KB - Virtual size: 149KB

.rdata
Size: 45KB - Virtual size: 45KB

.data
Size: 3KB - Virtual size: 6KB

.tls
Size: 512B - Virtual size: 9B

.rsrc
Size: 174KB - Virtual size: 173KB

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