Critter[.]exe | Triage™

Sharing

Copy URL Twitter E-mail

General

Target
Critter.exe
Size 853KB
Sample260727-bprnjsgh34
SHA256 e88dc150d4e79efd2186355036b9548ac29a8063d04c7a83457e1b0a9c398d29
MD5 d203ead9237ef2547310613b6e6963b3
SHA1 c83c76eb6be90032d2cfc317570e40fcc2faffd0
SHA512 0da372d07eeee6928e7a60cede35e479526ecb95184972e0acd509895731200afef121d2210f7e683cbc0b5f9ca0bc11bebef843a86e2d2855483d4f1ab9463c
SSDEEP 24576:ciiTU2PayBc80HZ4GvvQszgTSv3sm2b43NQms2VZ:ciiTU2PVOPHZ4vszgTSv3sm2b43a
TLSH
T19E058D6AA7B801F6D1ABC138C5835617E7B2B416172097DF02A1CA7A3F236E15F7E350
MD5 SHA1 SHA512 SSDEEP TLSH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
Critter.exe

File Explorer

Critter.exe

.exe 853KB

Critter.exe

IMPHASH b634eed43465867b8c1a26de4d2faa17
SHA256 e88dc150d4e79efd2186355036b9548ac29a8063d04c7a83457e1b0a9c398d29
MD5 d203ead9237ef2547310613b6e6963b3
SHA1 c83c76eb6be90032d2cfc317570e40fcc2faffd0
SHA512 0da372d07eeee6928e7a60cede35e479526ecb95184972e0acd509895731200afef121d2210f7e683cbc0b5f9ca0bc11bebef843a86e2d2855483d4f1ab9463c
SSDEEP 24576:ciiTU2PayBc80HZ4GvvQszgTSv3sm2b43NQms2VZ:ciiTU2PVOPHZ4vszgTSv3sm2b43a
TLSH
T19E058D6AA7B801F6D1ABC138C5835617E7B2B416172097DF02A1CA7A3F236E15F7E350
MD5 SHA1 SHA512 SSDEEP TLSH

Unsigned PE

Checks for missing Authenticode signature.

Minor OS version

Major OS version

Entry point

453008

Magic Number

523

Subsystem

IMAGE_SUBSYSTEM_WINDOWS_GUI

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

ws2_32

freeaddrinfo send WSACloseEvent gethostname ioctlsocket sendto recvfrom getsockopt getaddrinfo listen htonl accept select __WSAFDIsSet WSAIoctl socket setsockopt recv htons getsockname getpeername connect bind WSACleanup WSAStartup ntohs WSAGetLastError WSASetLastError closesocket WSAWaitForMultipleEvents WSAResetEvent WSAEventSelect WSAEnumNetworkEvents WSACreateEvent

wldap32

ord217 ord33 ord46 ord301 ord200 ord30 ord79 ord35 ord143 ord32 ord27 ord26 ord22 ord41 ord50 ord45 ord60 ord211

crypt32

CertFreeCertificateChain CertGetCertificateChain CertFreeCertificateChainEngine CertCreateCertificateChainEngine CryptQueryObject CertGetNameStringA CertFindExtension CertAddCertificateContextToStore CryptDecodeObjectEx PFXImportCertStore CryptStringToBinaryA CertFreeCertificateContext CertFindCertificateInStore CertEnumCertificatesInStore CertCloseStore CertOpenStore

normaliz

IdnToUnicode IdnToAscii

kernel32

CompareStringW GetTimeFormatW GetDateFormatW VirtualProtect FlsFree FlsSetValue FlsGetValue FlsAlloc HeapReAlloc HeapFree HeapAlloc GetConsoleOutputCP ReadConsoleW GetConsoleMode GetCommandLineW GetCommandLineA WriteFile GetModuleFileNameW ExitProcess SetFilePointerEx GetModuleHandleExW FreeLibraryAndExitThread ExitThread CreateThread GetLocaleInfoW IsValidLocale GetUserDefaultLCID EnumSystemLocalesW FlushFileBuffers SetStdHandle SetEndOfFile GetCurrentDirectoryW GetFullPathNameW GetTimeZoneInformation FindClose FindFirstFileExW FindNextFileW IsValidCodePage LCMapStringW FileTimeToSystemTime SystemTimeToTzSpecificLocalTime GetFileInformationByHandle GetTempPathA GetLastError LoadLibraryA DeleteFileA GetProcAddress FreeLibrary ReleaseSRWLockExclusive AcquireSRWLockExclusive SetLastError FormatMessageW QueryPerformanceCounter GetTickCount CloseHandle EnterCriticalSection LeaveCriticalSection InitializeCriticalSectionEx DeleteCriticalSection SetEvent WaitForSingleObject CreateEventA MultiByteToWideChar QueryPerformanceFrequency GetCurrentThread GetSystemDirectoryA GetModuleHandleA SleepEx Sleep WideCharToMultiByte MoveFileExA WaitForSingleObjectEx GetEnvironmentVariableA GetStdHandle GetFileType ReadFile PeekNamedPipe WaitForMultipleObjects GetCurrentProcessId RtlUnwind VerifyVersionInfoW CreateFileA GetFileSizeEx GetDriveTypeW GetACP GetOEMCP GetEnvironmentStringsW FreeEnvironmentStringsW SetEnvironmentVariableW GetProcessHeap DeleteFileW HeapSize WriteConsoleW VerSetConditionMask CreateFileW LoadLibraryExW EncodePointer DecodePointer LCMapStringEx GetStringTypeW GetCPInfo RtlCaptureContext RtlLookupFunctionEntry RtlVirtualUnwind UnhandledExceptionFilter SetUnhandledExceptionFilter GetCurrentProcess TerminateProcess IsProcessorFeaturePresent IsDebuggerPresent GetStartupInfoW GetModuleHandleW GetCurrentThreadId GetSystemTimeAsFileTime InitializeSListHead RtlUnwindEx RtlPcToFileHeader RaiseException InitializeCriticalSectionAndSpinCount TlsAlloc TlsGetValue TlsSetValue TlsFree

advapi32

CryptHashData CryptEncrypt CryptImportKey CryptDestroyKey CryptDestroyHash OpenThreadToken CryptCreateHash CryptGetHashParam CryptReleaseContext CryptAcquireContextA

bcrypt

BCryptGenRandom

Name

.text

Size

641KB

Virtual Size

641KB

Characteristics

IMAGE_SCN_CNT_CODE IMAGE_SCN_MEM_EXECUTE IMAGE_SCN_MEM_READ

Name

.rdata

Size

164KB

Virtual Size

164KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.data

Size

7KB

Virtual Size

13KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.pdata

Size

32KB

Virtual Size

31KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

_RDATA

Size

512B

Virtual Size

500B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.fptable

Size

512B

Virtual Size

256B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ IMAGE_SCN_MEM_WRITE

Name

.rsrc

Size

512B

Virtual Size

488B

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_READ

Name

.reloc

Size

5KB

Virtual Size

4KB

Characteristics

IMAGE_SCN_CNT_INITIALIZED_DATA IMAGE_SCN_MEM_DISCARDABLE IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

File Explorer

Critter.exe

ws2_32

wldap32

crypt32

normaliz

kernel32

advapi32

bcrypt

generic