locker[.]exe | Triage™

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General

Target
locker.exe
Size 2.9MB
Sample261102-s5d6tsvvex
SHA256 939a49060e880ac4b3232bc201e1bcf64925e5c2a285c438031dc620ca153344
MD5 c33e49f37d84c780c570b8d30eda52bb
SHA1 88f1819c5bed7182d726ba7d336c9394fbb8c4d7
SHA512 0a356c692a25bc9c55ad45b11f9dcf74b3826a5e37f11d84886a834e14fa3f7b7ff8adc465f9ccc2863579308e4eb330566d8a420171c7fc46dcdabfe0978a66
SSDEEP 49152:jHkTnVJyiucsl92BGb1I26zYZQS5huG9YdnIwovq2:7Ash6cZQS5huG9YdnIwovq2
TLSH
T15DE5E54359DB0DE9CED677B861C75335A338FE71CA291F2BA608C2312D536C4AE1AB50
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
locker.exe

File Explorer

locker.exe

.exe 2.9MB

locker.exe

IMPHASH 85ced18c7d3d9b6675297debe1b8ab66
SHA256 939a49060e880ac4b3232bc201e1bcf64925e5c2a285c438031dc620ca153344
MD5 c33e49f37d84c780c570b8d30eda52bb
SHA1 88f1819c5bed7182d726ba7d336c9394fbb8c4d7
SHA512 0a356c692a25bc9c55ad45b11f9dcf74b3826a5e37f11d84886a834e14fa3f7b7ff8adc465f9ccc2863579308e4eb330566d8a420171c7fc46dcdabfe0978a66
SSDEEP 49152:jHkTnVJyiucsl92BGb1I26zYZQS5huG9YdnIwovq2:7Ash6cZQS5huG9YdnIwovq2
TLSH
T15DE5E54359DB0DE9CED677B861C75335A338FE71CA291F2BA608C2312D536C4AE1AB50
MD5 SHA1 SHA512 SSDEEP TLSH

windows:4 windows x64 arch:x64

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

4191

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_CUI

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LINE_NUMS_STRIPPED IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB paths

bcrypt

BCryptCloseAlgorithmProvider BCryptDecrypt BCryptDestroyKey BCryptEncrypt BCryptExportKey BCryptFinalizeKeyPair BCryptGenRandom BCryptGenerateKeyPair BCryptGenerateSymmetricKey BCryptImportKeyPair BCryptOpenAlgorithmProvider BCryptSetProperty

kernel32

CloseHandle CreateEventA CreateFileW CreateHardLinkW CreateMutexW CreateProcessW CreateSemaphoreA DeleteCriticalSection DeleteFileW DuplicateHandle EnterCriticalSection FormatMessageA FreeLibrary GetCurrentProcess GetCurrentProcessId GetCurrentThread GetCurrentThreadId GetDiskFreeSpaceExW GetDriveTypeW GetEnvironmentVariableW GetFileAttributesW GetFileInformationByHandle GetFullPathNameW GetLastError GetLogicalDriveStringsW GetModuleFileNameW GetModuleHandleA GetProcAddress GetProcessAffinityMask GetSystemTimeAsFileTime GetTempPathW GetThreadContext GetThreadPriority GetTickCount InitializeCriticalSection LeaveCriticalSection LoadLibraryA LocalFree MoveFileExW OpenProcess OutputDebugStringA QueryPerformanceCounter QueryPerformanceFrequency RaiseException ReleaseMutex ReleaseSemaphore RemoveDirectoryW ResetEvent ResumeThread RtlCaptureContext RtlLookupFunctionEntry RtlUnwindEx RtlVirtualUnwind SetEvent SetLastError SetProcessAffinityMask SetThreadContext SetThreadPriority SetUnhandledExceptionFilter Sleep SuspendThread TlsAlloc TlsGetValue TlsSetValue TryEnterCriticalSection VirtualProtect VirtualQuery WaitForMultipleObjects WaitForSingleObject

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

mbrtowc mbsrtowcs strtoul wcrtomb

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

__p__wenviron _wgetcwd getenv

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

_findclose _fstat64 _lock_file _unlock_file _wchdir _wchmod _wfindfirst64i32 _wfindnext64i32 _wfullpath _wmkdir _wstat64

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

_set_new_mode calloc free malloc realloc

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

___mb_cur_max_func _configthreadlocale localeconv setlocale

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

__setusermatherr _fdopen

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

__C_specific_handler __intrinsic_setjmp longjmp memchr memcmp memcpy memmove strchr

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

__p___argc __p___wargv _assert _beginthreadex _cexit _configure_wide_argv _crt_atexit _endthreadex _errno _exit _get_errno _set_app_type _initialize_wide_environment _initterm _initterm_e _set_errno _set_invalid_parameter_handler abort exit signal strerror

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

__acrt_iob_func __p__commode __p__fmode __stdio_common_vfprintf __stdio_common_vsprintf _chsize_s _close _fileno _get_osfhandle _lseeki64 _read _setmode _wfopen _wopen _write fclose fflush fopen fputc fputs fwrite setvbuf

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

_strdup iswctype memset strcmp strcoll strlen strncmp strnlen strxfrm towlower towupper wcscat wcscmp wcscoll wcscpy wcslen wcsnlen wcsxfrm wctype

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

_wutime64 strftime wcsftime

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

rand_s

shell32

ShellExecuteW

user32

MessageBoxA

Name

.text

Size

935KB

Virtual Size

934KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.data

Size

9KB

Virtual Size

8KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rdata

Size

76KB

Virtual Size

76KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

Size

512B

Virtual Size

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

51KB

Virtual Size

51KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.xdata

Size

74KB

Virtual Size

74KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.bss

Size

Virtual Size

3KB

Characteristics

IMAGE_SCN_CNT_UNINITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.idata

Size

8KB

Virtual Size

7KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.tls

Size

512B

Virtual Size

16B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

1024B

Virtual Size

688B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

6KB

Virtual Size

5KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/14

Size

512B

Virtual Size

208B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/29

Size

19KB

Virtual Size

19KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/41

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/55

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/67

Size

1KB

Virtual Size

1KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/80

Size

512B

Virtual Size

193B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/91

Size

1024B

Virtual Size

994B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/107

Size

2KB

Virtual Size

2KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Name

/123

Size

512B

Virtual Size

249B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

locker.exe

bcrypt

kernel32

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

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

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

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

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

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

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

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

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

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

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

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

shell32

user32

generic