ocean_locust[.]7z

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General

Target

ocean_locust.7z
Size

161KB
MD5

2a44ce882235ff9a15006a554fc4b83c
SHA1

4c81b4d0ff582aace1fd5e6467c9967226619622
SHA256

066f9d97549412a3ca077ef94baa991c691dc0c2adc815de55bdd5f71a523da0
SHA512

60daf471aa01502f99b2c4c932be1a16aca9db9917a78ec1cfcd9ee9264aa0d28d4959a1bcbf60da96b210fb24924d8b2c00ac9dabfb0291f14aaedd5b8c21ee
SSDEEP

3072:RFoFiGZ5Z0TBRxMNxYQfZW1cTXJexIZnT4pGf1tKABoQDEY:aiGZDmMNM1cDkSiGf1BBFDN

Score

3^/10

Malware Config

Signatures

Unsigned PE 2 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Chal/png-challenge-debug.exe
unpack001/Chal/png-challenge.exe

Files

ocean_locust.7z
.7z
Chal/inconspicuous.png
.png
Chal/png-challenge-debug.exe
.exe windows:6 windows x64 arch:x64

859ef62cc24aca0f8bd878ae21c43373

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_LARGE_ADDRESS_AWARE

PDB Paths

png_challenge.pdb

Imports

api-ms-win-core-synch-l1-2-0

WakeByAddressSingle
WakeByAddressAll
WaitOnAddress

bcrypt

BCryptGenRandom

advapi32

SystemFunction036

kernel32

UnhandledExceptionFilter
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
IsDebuggerPresent
SetUnhandledExceptionFilter
WideCharToMultiByte
CloseHandle
GetLastError
AddVectoredExceptionHandler
SetThreadStackGuarantee
GetCurrentThread
WaitForSingleObject
QueryPerformanceCounter
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
SetLastError
GetCurrentDirectoryW
GetEnvironmentVariableW
GetCommandLineW
SetFileInformationByHandle
GetCurrentProcess
GetStdHandle
GetCurrentProcessId
HeapFree
HeapReAlloc
lstrlenW
ReleaseMutex
GetProcessHeap
HeapAlloc
CreateFileW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetConsoleMode
GetModuleHandleW
FormatMessageW
GetModuleFileNameW
GetFullPathNameW
MultiByteToWideChar
WriteConsoleW
IsProcessorFeaturePresent
GetModuleHandleA
GetProcAddress
WaitForSingleObjectEx
LoadLibraryA
CreateMutexA

ntdll

RtlNtStatusToDosError
NtWriteFile
NtReadFile

vcruntime140

__C_specific_handler
_CxxThrowException
__current_exception
__current_exception_context
memmove
memcmp
memset
memcpy
__CxxFrameHandler3

api-ms-win-crt-runtime-l1-1-0

_initterm
_set_app_type
exit
_exit
_get_initial_narrow_environment
_configure_narrow_argv
__p___argc
__p___argv
_cexit
_c_exit
_register_thread_local_exe_atexit_callback
_seh_filter_exe
_initterm_e
_initialize_narrow_environment
_initialize_onexit_table
_register_onexit_function
_crt_atexit
terminate

api-ms-win-crt-math-l1-1-0

__setusermatherr

api-ms-win-crt-stdio-l1-1-0

_set_fmode
__p__commode

api-ms-win-crt-locale-l1-1-0

_configthreadlocale

api-ms-win-crt-heap-l1-1-0

free
_set_new_mode

Sections

.text
Size: 368KB - Virtual size: 367KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 79KB - Virtual size: 78KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 760B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 16KB - Virtual size: 15KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
Chal/png-challenge.exe
.exe windows:6 windows x64 arch:x64

859ef62cc24aca0f8bd878ae21c43373

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_LARGE_ADDRESS_AWARE

PDB Paths

png_challenge.pdb

Imports

api-ms-win-core-synch-l1-2-0

WakeByAddressSingle
WakeByAddressAll
WaitOnAddress

bcrypt

BCryptGenRandom

advapi32

SystemFunction036

kernel32

UnhandledExceptionFilter
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
IsDebuggerPresent
SetUnhandledExceptionFilter
WideCharToMultiByte
CloseHandle
GetLastError
AddVectoredExceptionHandler
SetThreadStackGuarantee
GetCurrentThread
WaitForSingleObject
QueryPerformanceCounter
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
SetLastError
GetCurrentDirectoryW
GetEnvironmentVariableW
GetCommandLineW
SetFileInformationByHandle
GetCurrentProcess
GetStdHandle
GetCurrentProcessId
HeapFree
HeapReAlloc
lstrlenW
ReleaseMutex
GetProcessHeap
HeapAlloc
CreateFileW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetConsoleMode
GetModuleHandleW
FormatMessageW
GetModuleFileNameW
GetFullPathNameW
MultiByteToWideChar
WriteConsoleW
IsProcessorFeaturePresent
GetModuleHandleA
GetProcAddress
WaitForSingleObjectEx
LoadLibraryA
CreateMutexA

ntdll

RtlNtStatusToDosError
NtWriteFile
NtReadFile

vcruntime140

__C_specific_handler
_CxxThrowException
__current_exception
__current_exception_context
memmove
memcmp
memset
memcpy
__CxxFrameHandler3

api-ms-win-crt-runtime-l1-1-0

_initterm
_set_app_type
exit
_exit
_get_initial_narrow_environment
_configure_narrow_argv
__p___argc
__p___argv
_cexit
_c_exit
_register_thread_local_exe_atexit_callback
_seh_filter_exe
_initterm_e
_initialize_narrow_environment
_initialize_onexit_table
_register_onexit_function
_crt_atexit
terminate

api-ms-win-crt-math-l1-1-0

__setusermatherr

api-ms-win-crt-stdio-l1-1-0

_set_fmode
__p__commode

api-ms-win-crt-locale-l1-1-0

_configthreadlocale

api-ms-win-crt-heap-l1-1-0

free
_set_new_mode

Sections

.text
Size: 129KB - Virtual size: 129KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 44KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 760B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 6KB - Virtual size: 5KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 1024B - Virtual size: 968B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

859ef62cc24aca0f8bd878ae21c43373

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

api-ms-win-core-synch-l1-2-0

bcrypt

advapi32

kernel32

ntdll

vcruntime140

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-heap-l1-1-0

Sections

.text Size: 368KB - Virtual size: 367KB

.rdata Size: 79KB - Virtual size: 78KB

.data Size: 512B - Virtual size: 760B

.pdata Size: 16KB - Virtual size: 15KB

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

859ef62cc24aca0f8bd878ae21c43373

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

api-ms-win-core-synch-l1-2-0

bcrypt

advapi32

kernel32

ntdll

vcruntime140

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-math-l1-1-0

api-ms-win-crt-stdio-l1-1-0

api-ms-win-crt-locale-l1-1-0

api-ms-win-crt-heap-l1-1-0

Sections

.text Size: 129KB - Virtual size: 129KB

.rdata Size: 44KB - Virtual size: 44KB

.data Size: 512B - Virtual size: 760B

.pdata Size: 6KB - Virtual size: 5KB

.reloc Size: 1024B - Virtual size: 968B

.text
Size: 368KB - Virtual size: 367KB

.rdata
Size: 79KB - Virtual size: 78KB

.data
Size: 512B - Virtual size: 760B

.pdata
Size: 16KB - Virtual size: 15KB

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

.text
Size: 129KB - Virtual size: 129KB

.rdata
Size: 44KB - Virtual size: 44KB

.data
Size: 512B - Virtual size: 760B

.pdata
Size: 6KB - Virtual size: 5KB

.reloc
Size: 1024B - Virtual size: 968B