obsfu[.]exe | Triage

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General

Target

obsfu.exe
Size

250KB
MD5

88780364bccedba6000b32cccc227087
SHA1

136a2971497d30d71bed4e9bd710268a401421b2
SHA256

10751680119680fce36e9d2ac13e8224fbea9e9006efd85872b295489146a4b5
SHA512

df08ecac9175ab3fcb341871a54c7c581c3330ca8f5dc8f7b09ac85f56e578ec9e0d6ea76d113127fa9af75a001490db5901b881b872e88745931910b13a3849
SSDEEP

1536:lrae78zjORCDGwfdCSog01313/s5gaYfaJs7ahgVVVPxrrYGiy9yIyIMNcT:rahKyd2n31k53Ygs7ahgxxwYIPIDT

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
obsfu.exe

Files

obsfu.exe
.exe windows:10 windows x64 arch:x64

4cea7ae85c87ddc7295d39ff9cda31d1

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
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

PDB Paths

wextract.pdb

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
LoadLibraryExA
SetFileTime
SetFilePointer
FindResourceA
CreateMutexA
GetVolumeInformationA
WaitForSingleObject
GetCurrentDirectoryA
FreeResource
GetVersion
SetCurrentDirectoryA
GetTempPathA
LocalFileTimeToFileTime
CreateFileA
SetEvent
TerminateThread
GetVersionExA
LockResource
GetSystemInfo
CreateThread
ResetEvent
LoadResource
ExitProcess
GetModuleHandleW
CreateProcessA
FormatMessageA
GetTempFileNameA
DosDateTimeToFileTime
CreateEventA
GetExitCodeProcess
ExpandEnvironmentStringsA
LocalAlloc
lstrcmpA
FindNextFileA
GetCurrentProcess
FindFirstFileA
GetModuleFileNameA
GetShortPathNameA
Sleep
GetStartupInfoW
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
GetTickCount
EnumResourceLanguagesA
GetDiskFreeSpaceA
MulDiv
FindClose

gdi32

GetDeviceCaps

user32

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

msvcrt

?terminate@@YAXXZ
_commode
_fmode
_acmdln
__C_specific_handler
memset
__setusermatherr
_ismbblead
_cexit
_exit
exit
__set_app_type
__getmainargs
_amsg_exit
_XcptFilter
memcpy_s
_vsnprintf
_initterm
memcpy

comctl32

ord17

cabinet

ord20
ord21
ord23
ord22

version

VerQueryValueA
GetFileVersionInfoSizeA
GetFileVersionInfoA

Sections

.text
Size: 31KB - Virtual size: 30KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 9KB - Virtual size: 8KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 206KB - Virtual size: 205KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 512B - Virtual size: 32B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

4cea7ae85c87ddc7295d39ff9cda31d1

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

kernel32

gdi32

user32

msvcrt

comctl32

cabinet

version

Sections

.text Size: 31KB - Virtual size: 30KB

.rdata Size: 9KB - Virtual size: 8KB

.data Size: 1024B - Virtual size: 7KB

.pdata Size: 1KB - Virtual size: 1KB

.rsrc Size: 206KB - Virtual size: 205KB

.reloc Size: 512B - Virtual size: 32B

.text
Size: 31KB - Virtual size: 30KB

.rdata
Size: 9KB - Virtual size: 8KB

.data
Size: 1024B - Virtual size: 7KB

.pdata
Size: 1KB - Virtual size: 1KB

.rsrc
Size: 206KB - Virtual size: 205KB

.reloc
Size: 512B - Virtual size: 32B