browser_assistant[.]exe

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General

Target

browser_assistant.exe
Size

3.1MB
MD5

28a21afb4bdc543b4b0309bb78b8ba4a
SHA1

ab6230c0e1c2c12fc5c9b7a60ea5adef99e7783b
SHA256

672aeb85a07ec1a25dbcf48b64d3bde24dd0691c2bb27ed74a536776f63b5d27
SHA512

806a3466dd4de9bfca6b13c20e69985decfb8ffe5a31f785d649dab249064fc4ec1fbba9ddaefc634d6e7aa355fef73f511357c748043e407f979b150c159cb7
SSDEEP

98304:4qcHd9dChDBdG26666666666666666666666666666666x666666666666666fwW:4qcHZChfGcwMOlq

Score

1^/10

Malware Config

Signatures

Files

browser_assistant.exe
.exe windows:5 windows x86 arch:x86

82d43f5a97a0eaa97e44d5ea8dd78964

Code Sign

0d:31:c2:3e:b2:24:9c:e6:11:b9:53:fb:16:ea:0d:25
Certificate

Issuer

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

24/05/2019, 00:00

Not After

03/08/2022, 12:00

Subject

SERIALNUMBER=916 368 127,CN=Opera Software AS,O=Opera Software AS,L=Oslo,C=NO,2.5.4.15=#131450726976617465204f7267616e697a6174696f6e,1.3.6.1.4.1.311.60.2.1.3=#13024e4f

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

Issuer

CN=DigiCert High Assurance EV Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

18/04/2012, 12:00

Not After

18/04/2027, 12:00

Subject

CN=DigiCert EV Code Signing CA (SHA2),OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

Issuer

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

01/01/2021, 00:00

Not After

06/01/2031, 00:00

Subject

CN=DigiCert Timestamp 2021,O=DigiCert\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

Issuer

CN=DigiCert Assured ID Root CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Not Before

07/01/2016, 12:00

Not After

07/01/2031, 12:00

Subject

CN=DigiCert SHA2 Assured ID Timestamping CA,OU=www.digicert.com,O=DigiCert Inc,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

1f:dd:2b:48:35:5b:dd:10:bc:f4:91:a1:af:57:34:2f:5d:54:47:70:b6:47:25:bc:15:d9:d9:48:89:9d:08:15
Signer

Actual PE Digest

1f:dd:2b:48:35:5b:dd:10:bc:f4:91:a1:af:57:34:2f:5d:54:47:70:b6:47:25:bc:15:d9:d9:48:89:9d:08:15

Digest Algorithm

sha256

PE Digest Matches

true

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_LARGE_ADDRESS_AWARE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

browser_assistant.exe.pdb

Imports

advapi32

AccessCheck
AdjustTokenPrivileges
AllocateAndInitializeSid
BuildExplicitAccessWithNameW
BuildSecurityDescriptorW
CheckTokenMembership
ConvertStringSecurityDescriptorToSecurityDescriptorW
CreateProcessAsUserW
CryptAcquireContextW
CryptCreateHash
CryptDestroyHash
CryptGenRandom
CryptGetHashParam
CryptHashData
CryptReleaseContext
DuplicateToken
EqualSid
EventRegister
EventUnregister
EventWrite
FreeSid
GetExplicitEntriesFromAclW
GetNamedSecurityInfoW
GetTokenInformation
GetUserNameW
ImpersonateNamedPipeClient
LookupPrivilegeValueW
OpenProcessToken
RegCloseKey
RegCreateKeyExW
RegDeleteKeyExW
RegDeleteKeyW
RegDeleteValueA
RegDeleteValueW
RegEnumKeyExW
RegEnumValueW
RegGetKeySecurity
RegNotifyChangeKeyValue
RegOpenKeyExW
RegQueryInfoKeyW
RegQueryValueExA
RegQueryValueExW
RegSetValueExA
RegSetValueExW
RevertToSelf
SetEntriesInAclW
SetNamedSecurityInfoW
SystemFunction036

gdi32

CreateRectRgn
GetStockObject

oleaut32

SysAllocString
SysFreeString
VarUI4FromStr
VariantClear
VariantCopy

shell32

CommandLineToArgvW
SHAssocEnumHandlersForProtocolByApplication
SHChangeNotify
SHCreateAssociationRegistration
SHGetFolderPathW
SHGetKnownFolderPath
SHOpenWithDialog
SHQueryUserNotificationState
ShellExecuteExW
Shell_NotifyIconW

shlwapi

PathMatchSpecW
SHDeleteKeyW

user32

AllowSetForegroundWindow
CharNextW
CharUpperW
CreatePopupMenu
CreateWindowExW
DefWindowProcW
DestroyMenu
DestroyWindow
DispatchMessageW
EnableWindow
FindWindowExW
FindWindowW
GetClientRect
GetDesktopWindow
GetForegroundWindow
GetMessageW
GetQueueStatus
GetWindowLongW
InsertMenuItemW
KillTimer
LoadIconW
MessageBoxW
MsgWaitForMultipleObjectsEx
PeekMessageW
PostMessageW
PostQuitMessage
RegisterClassExW
RegisterClassW
SendInput
SendNotifyMessageW
SetForegroundWindow
SetTimer
SetWindowLongW
SetWindowPos
SetWindowRgn
SystemParametersInfoW
TrackPopupMenuEx
TranslateMessage
UnregisterClassW
WaitForInputIdle
wsprintfW

version

GetFileVersionInfoSizeW
GetFileVersionInfoW
VerQueryValueW

wininet

HttpOpenRequestW
HttpQueryInfoW
HttpSendRequestW
InternetCloseHandle
InternetConnectW
InternetOpenW

ws2_32

WSACleanup
WSAGetLastError
WSAIoctl
WSASetLastError
WSAStartup
__WSAFDIsSet
bind
closesocket
connect
freeaddrinfo
getaddrinfo
getpeername
getsockname
getsockopt
htons
ioctlsocket
ntohs
recv
select
send
setsockopt
socket

kernel32

AcquireSRWLockExclusive
AcquireSRWLockShared
AssignProcessToJobObject
CallbackMayRunLong
CloseHandle
CloseThreadpool
CloseThreadpoolWork
CompareStringW
ConnectNamedPipe
CopyFileW
CreateDirectoryW
CreateEventW
CreateFileA
CreateFileMappingW
CreateFileW
CreateIoCompletionPort
CreateMutexW
CreateNamedPipeW
CreatePipe
CreateProcessW
CreateSemaphoreW
CreateThread
CreateThreadpool
CreateThreadpoolWork
DecodePointer
DeleteCriticalSection
DeleteFileW
DeleteProcThreadAttributeList
DeviceIoControl
DisconnectNamedPipe
DuplicateHandle
EncodePointer
EnterCriticalSection
EnumSystemLocalesW
ExitProcess
ExitThread
ExpandEnvironmentStringsA
ExpandEnvironmentStringsW
FileTimeToSystemTime
FindClose
FindFirstFileExW
FindNextFileW
FindResourceExW
FindResourceW
FlushFileBuffers
FlushViewOfFile
FormatMessageA
FreeEnvironmentStringsW
FreeLibrary
FreeLibraryAndExitThread
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetConsoleMode
GetConsoleOutputCP
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDateFormatW
GetDiskFreeSpaceExW
GetDriveTypeW
GetEnvironmentStringsW
GetEnvironmentVariableW
GetExitCodeProcess
GetFileAttributesExW
GetFileAttributesW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetFileSizeEx
GetFileTime
GetFileType
GetFullPathNameW
GetHandleInformation
GetLastError
GetLocalTime
GetLocaleInfoW
GetLogicalDrives
GetLongPathNameW
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleExA
GetModuleHandleExW
GetModuleHandleW
GetNativeSystemInfo
GetOEMCP
GetProcAddress
GetProcessHandleCount
GetProcessHeap
GetProcessId
GetProcessTimes
GetProductInfo
GetQueuedCompletionStatus
GetStartupInfoW
GetStdHandle
GetStringTypeW
GetSystemDefaultLCID
GetSystemDirectoryW
GetSystemInfo
GetSystemPowerStatus
GetSystemTimeAsFileTime
GetTempPathW
GetThreadContext
GetThreadId
GetThreadLocale
GetThreadPreferredUILanguages
GetThreadPriority
GetTickCount64
GetTickCount
GetTimeFormatW
GetTimeZoneInformation
GetUserDefaultLCID
GetVersion
GetVersionExW
GetWindowsDirectoryW
GlobalMemoryStatusEx
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
InitOnceExecuteOnce
InitializeConditionVariable
InitializeCriticalSection
InitializeCriticalSectionAndSpinCount
InitializeCriticalSectionEx
InitializeProcThreadAttributeList
InitializeSListHead
InitializeSRWLock
IsDebuggerPresent
IsProcessorFeaturePresent
IsValidCodePage
IsValidLocale
IsWow64Process
K32GetPerformanceInfo
K32GetProcessMemoryInfo
LCMapStringW
LeaveCriticalSection
LoadLibraryExA
LoadLibraryExW
LoadLibraryW
LoadResource
LocalAlloc
LocalFree
LockFileEx
LockResource
MapViewOfFile
MoveFileExW
MoveFileW
MultiByteToWideChar
OpenEventW
OpenMutexW
OpenProcess
OutputDebugStringA
OutputDebugStringW
PeekNamedPipe
PostQueuedCompletionStatus
QueryFullProcessImageNameW
QueryPerformanceCounter
QueryPerformanceFrequency
QueryThreadCycleTime
RaiseException
ReadConsoleW
ReadFile
ReadProcessMemory
RegisterWaitForSingleObject
ReleaseMutex
ReleaseSRWLockExclusive
ReleaseSRWLockShared
ReleaseSemaphore
RemoveDirectoryW
ReplaceFileW
ResetEvent
ResumeThread
RtlCaptureStackBackTrace
RtlUnwind
SetConsoleCtrlHandler
SetCurrentDirectoryW
SetEndOfFile
SetEnvironmentVariableW
SetEvent
SetFileAttributesW
SetFileInformationByHandle
SetFilePointerEx
SetHandleInformation
SetLastError
SetNamedPipeHandleState
SetProcessShutdownParameters
SetStdHandle
SetThreadPriority
SetThreadpoolThreadMaximum
SetThreadpoolThreadMinimum
SetUnhandledExceptionFilter
SizeofResource
Sleep
SleepConditionVariableSRW
SleepEx
SubmitThreadpoolWork
SuspendThread
SystemTimeToFileTime
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TransactNamedPipe
TryAcquireSRWLockExclusive
TzSpecificLocalTimeToSystemTime
UnhandledExceptionFilter
UnlockFileEx
UnmapViewOfFile
UnregisterWaitEx
UpdateProcThreadAttribute
VerSetConditionMask
VerifyVersionInfoW
VirtualFree
VirtualProtect
VirtualQuery
VirtualQueryEx
WaitForMultipleObjects
WaitForSingleObject
WaitForSingleObjectEx
WaitForThreadpoolWorkCallbacks
WaitNamedPipeW
WakeAllConditionVariable
WakeConditionVariable
WideCharToMultiByte
WriteConsoleW
WriteFile
lstrcmpiW

ole32

CoAllowSetForegroundWindow
CoCreateInstance
CoInitializeEx
CoInitializeSecurity
CoRegisterInitializeSpy
CoRevokeInitializeSpy
CoSetProxyBlanket
CoTaskMemAlloc
CoTaskMemFree
CoTaskMemRealloc
CoUninitialize
IIDFromString
OleCreate
OleInitialize
OleSetContainedObject
OleUninitialize
StringFromGUID2

crypt32

CertAddCertificateContextToStore
CertCloseStore
CertCreateCertificateChainEngine
CertFindCertificateInStore
CertFreeCertificateChain
CertFreeCertificateChainEngine
CertFreeCertificateContext
CertGetCertificateChain
CertGetNameStringW
CertOpenStore
CryptQueryObject
CryptStringToBinaryW

userenv

CreateEnvironmentBlock
DestroyEnvironmentBlock

winmm

timeBeginPeriod
timeEndPeriod
timeGetTime

dbghelp

MiniDumpWriteDump

winhttp

WinHttpAddRequestHeaders
WinHttpCloseHandle
WinHttpConnect
WinHttpCrackUrl
WinHttpOpen
WinHttpOpenRequest
WinHttpQueryHeaders
WinHttpReadData
WinHttpReceiveResponse
WinHttpSendRequest
WinHttpSetTimeouts
WinHttpWriteData

Exports

Exports

GetHandleVerifier

Sections

.text
Size: 2.4MB - Virtual size: 2.4MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 565KB - Virtual size: 565KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 12KB - Virtual size: 27KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.00cfg
Size: 512B - Virtual size: 4B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rodata
Size: 512B - Virtual size: 128B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.tls
Size: 512B - Virtual size: 161B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.voltbl
Size: 512B - Virtual size: 348B

CPADinfo
Size: 512B - Virtual size: 48B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 56KB - Virtual size: 55KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 71KB - Virtual size: 71KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

82d43f5a97a0eaa97e44d5ea8dd78964

Code Sign

0d:31:c2:3e:b2:24:9c:e6:11:b9:53:fb:16:ea:0d:25Certificate

Extended Key Usages

Key Usages

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5cCertificate

Extended Key Usages

Key Usages

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:ddCertificate

Extended Key Usages

Key Usages

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15Certificate

Extended Key Usages

Key Usages

1f:dd:2b:48:35:5b:dd:10:bc:f4:91:a1:af:57:34:2f:5d:54:47:70:b6:47:25:bc:15:d9:d9:48:89:9d:08:15Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

gdi32

oleaut32

shell32

shlwapi

user32

version

wininet

ws2_32

kernel32

ole32

crypt32

userenv

winmm

dbghelp

winhttp

Exports

Exports

Sections

.text Size: 2.4MB - Virtual size: 2.4MB

.rdata Size: 565KB - Virtual size: 565KB

.data Size: 12KB - Virtual size: 27KB

.00cfg Size: 512B - Virtual size: 4B

.rodata Size: 512B - Virtual size: 128B

.tls Size: 512B - Virtual size: 161B

.voltbl Size: 512B - Virtual size: 348B

CPADinfo Size: 512B - Virtual size: 48B

.rsrc Size: 56KB - Virtual size: 55KB

.reloc Size: 71KB - Virtual size: 71KB

0d:31:c2:3e:b2:24:9c:e6:11:b9:53:fb:16:ea:0d:25
Certificate

03:f1:b4:e1:5f:3a:82:f1:14:96:78:b3:d7:d8:47:5c
Certificate

0d:42:4a:e0:be:3a:88:ff:60:40:21:ce:14:00:f0:dd
Certificate

0a:a1:25:d6:d6:32:1b:7e:41:e4:05:da:36:97:c2:15
Certificate

1f:dd:2b:48:35:5b:dd:10:bc:f4:91:a1:af:57:34:2f:5d:54:47:70:b6:47:25:bc:15:d9:d9:48:89:9d:08:15
Signer

.text
Size: 2.4MB - Virtual size: 2.4MB

.rdata
Size: 565KB - Virtual size: 565KB

.data
Size: 12KB - Virtual size: 27KB

.00cfg
Size: 512B - Virtual size: 4B

.rodata
Size: 512B - Virtual size: 128B

.tls
Size: 512B - Virtual size: 161B

.voltbl
Size: 512B - Virtual size: 348B

CPADinfo
Size: 512B - Virtual size: 48B

.rsrc
Size: 56KB - Virtual size: 55KB

.reloc
Size: 71KB - Virtual size: 71KB