K2[.]zip | Triage

Sharing

Copy URL Twitter E-mail

General

Target

K2.zip
Size

18.4MB
MD5

29b4254b6641088f2e41656d637b6936
SHA1

d61d7a6bda1bc9f595939b852b65b392897bec95
SHA256

34588c84b70cb3fac7fb2291b5e317f4854bc4e7f1a82e4a474eeae5bf8927f8
SHA512

cf0baece30c3b1f4e9c19d519d9f9df50d17c61284bb1450ac058b72f0aefe63b592f9a5ba2ffc07fafdd7ac330085bead9afc10d940978b5391bb12d08bf7df
SSDEEP

98304:GMQ2pcZ+jNsuY2EQwyjHcFbZ5Hq49WHGcuEfunkdGG6Ip8BD3P:Gs5suY2VHHc1JWmcLGSY3P

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/auto-change-screens.exe

Files

K2.zip
.zip
auto-change-screens.exe
.exe windows:6 windows x64 arch:x64

8c7872cbd8d3fd8d4fc62eb1fe42cece

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_LARGE_ADDRESS_AWARE
IMAGE_FILE_DEBUG_STRIPPED

Imports

kernel32

AddAtomA
AddVectoredExceptionHandler
AreFileApisANSI
CloseHandle
CreateEventA
CreateFileA
CreateFileMappingA
CreateFileMappingW
CreateFileW
CreateIoCompletionPort
CreateMutexA
CreateMutexW
CreateSemaphoreA
CreateThread
CreateWaitableTimerA
CreateWaitableTimerExW
DeleteAtom
DeleteCriticalSection
DeleteFileA
DeleteFileW
DuplicateHandle
EnterCriticalSection
ExitProcess
FindAtomA
FlushFileBuffers
FlushViewOfFile
FormatMessageA
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
GetAtomNameA
GetConsoleMode
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetCurrentThreadId
GetDiskFreeSpaceA
GetDiskFreeSpaceW
GetEnvironmentStringsW
GetErrorMode
GetFileAttributesA
GetFileAttributesExW
GetFileAttributesW
GetFileSize
GetFullPathNameA
GetFullPathNameW
GetHandleInformation
GetLastError
GetProcAddress
GetProcessAffinityMask
GetProcessHeap
GetQueuedCompletionStatusEx
GetStartupInfoA
GetStdHandle
GetSystemDirectoryA
GetSystemInfo
GetSystemTime
GetSystemTimeAsFileTime
GetTempPathA
GetTempPathW
GetThreadContext
GetThreadPriority
GetTickCount
GetVersionExA
GetVersionExW
HeapAlloc
HeapCompact
HeapCreate
HeapDestroy
HeapFree
HeapReAlloc
HeapSize
HeapValidate
InitializeCriticalSection
IsDBCSLeadByteEx
IsDebuggerPresent
LeaveCriticalSection
LoadLibraryA
LoadLibraryExW
LoadLibraryW
LocalFree
LockFile
LockFileEx
MapViewOfFile
MultiByteToWideChar
OpenProcess
OutputDebugStringA
OutputDebugStringW
PostQueuedCompletionStatus
QueryPerformanceCounter
QueryPerformanceFrequency
RaiseException
RaiseFailFastException
ReadFile
ReleaseMutex
ReleaseSemaphore
RemoveVectoredExceptionHandler
ResetEvent
ResumeThread
SetConsoleCtrlHandler
SetEndOfFile
SetErrorMode
SetEvent
SetFilePointer
SetLastError
SetProcessAffinityMask
SetProcessPriorityBoost
SetThreadContext
SetThreadPriority
SetUnhandledExceptionFilter
SetWaitableTimer
Sleep
SuspendThread
SwitchToThread
SystemTimeToFileTime
TlsAlloc
TlsGetValue
TlsSetValue
TryEnterCriticalSection
UnlockFile
UnlockFileEx
UnmapViewOfFile
VirtualAlloc
VirtualFree
VirtualProtect
VirtualQuery
WaitForMultipleObjects
WaitForSingleObject
WaitForSingleObjectEx
WerGetFlags
WerSetFlags
WideCharToMultiByte
WriteConsoleW
WriteFile
__C_specific_handler

msvcrt

___lc_codepage_func
___mb_cur_max_func
__getmainargs
__initenv
__iob_func
__lconv_init
__set_app_type
__setusermatherr
_acmdln
_amsg_exit
_beginthread
_beginthreadex
_cexit
_commode
_endthreadex
_errno
_fmode
_initterm
_localtime64
_lock
_memccpy
_onexit
_setjmp
_strdup
_ultoa
_unlock
abort
calloc
exit
fprintf
fputc
free
fwrite
localeconv
longjmp
malloc
memchr
memcmp
memcpy
memmove
memset
printf
qsort
realloc
signal
strchr
strcmp
strcspn
strerror
strlen
strncmp
strrchr
strspn
vfprintf
wcslen

Exports

Exports

_cgo_dummy_export
authorizerTrampoline
callbackTrampoline
commitHookTrampoline
compareTrampoline
doneTrampoline
preUpdateHookTrampoline
rollbackHookTrampoline
stepTrampoline
updateHookTrampoline

Sections

.text
Size: 7.6MB - Virtual size: 7.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 424KB - Virtual size: 424KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 9.9MB - Virtual size: 9.9MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.pdata
Size: 167KB - Virtual size: 166KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 28KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 426KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.edata
Size: 512B - Virtual size: 345B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.idata
Size: 7KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.CRT
Size: 512B - Virtual size: 112B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.tls
Size: 512B - Virtual size: 16B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 89KB - Virtual size: 88KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.reloc
Size: 131KB - Virtual size: 131KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

8c7872cbd8d3fd8d4fc62eb1fe42cece

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

msvcrt

Exports

Exports

Sections

.text Size: 7.6MB - Virtual size: 7.6MB

.data Size: 424KB - Virtual size: 424KB

.rdata Size: 9.9MB - Virtual size: 9.9MB

.pdata Size: 167KB - Virtual size: 166KB

.xdata Size: 28KB - Virtual size: 28KB

.bss Size: - Virtual size: 426KB

.edata Size: 512B - Virtual size: 345B

.idata Size: 7KB - Virtual size: 6KB

.CRT Size: 512B - Virtual size: 112B

.tls Size: 512B - Virtual size: 16B

.rsrc Size: 89KB - Virtual size: 88KB

.reloc Size: 131KB - Virtual size: 131KB

.text
Size: 7.6MB - Virtual size: 7.6MB

.data
Size: 424KB - Virtual size: 424KB

.rdata
Size: 9.9MB - Virtual size: 9.9MB

.pdata
Size: 167KB - Virtual size: 166KB

.xdata
Size: 28KB - Virtual size: 28KB

.bss
Size: - Virtual size: 426KB

.edata
Size: 512B - Virtual size: 345B

.idata
Size: 7KB - Virtual size: 6KB

.CRT
Size: 512B - Virtual size: 112B

.tls
Size: 512B - Virtual size: 16B

.rsrc
Size: 89KB - Virtual size: 88KB

.reloc
Size: 131KB - Virtual size: 131KB