e621_downloader[.]exe

Sharing

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General

Target

e621_downloader.exe
Size

16.7MB
MD5

6469593c29b876b1e6be2475254f508b
SHA1

38a7e8ee3b4af81bf0f80aa6b1594ff38da3ef8d
SHA256

ecffaae735de236325483a8ad646fe4ddad5b5dcdbac05a0de13fff3e9d4d8ca
SHA512

41c906191ec08409f86a4b5f4403775ef8eb5aebc33cc76c8fad077da711fd6942a6137bbf02fdab5e4fee8320bab9cb33eb2adb45746928f0d35d31776c7e50
SSDEEP

98304:KKb3kTVCnMDrrVEeVCEI4oyX+mC0WiVuv1Eehh3bJVqBQ48FmKYx/y4FSyVQK4:dbAzfUyXeiVudEehhpF

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
e621_downloader.exe

Files

e621_downloader.exe
.exe windows:4 windows x64 arch:x64

3aa5157885cfafda1f2354ba04faaaa1

Headers

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

Imports

advapi32

CryptAcquireContextW
CryptDestroyKey
CryptImportKey
CryptReleaseContext
OpenProcessToken
RegCloseKey
RegEnumKeyExW
RegEnumValueW
RegOpenKeyExW
RegQueryInfoKeyW
RegQueryValueExW
SystemFunction036

bcrypt

BCryptCloseAlgorithmProvider
BCryptGenRandom
BCryptOpenAlgorithmProvider

crypt32

CertAddCertificateContextToStore
CertAddEncodedCTLToStore
CertAddEncodedCertificateToStore
CertCloseStore
CertCreateCertificateContext
CertDeleteCertificateFromStore
CertDuplicateCertificateChain
CertDuplicateCertificateContext
CertDuplicateStore
CertEnumCertificatesInStore
CertFreeCertificateChain
CertFreeCertificateContext
CertGetCertificateChain
CertGetCertificateContextProperty
CertGetEnhancedKeyUsage
CertOpenStore
CertSetCertificateContextProperty
CertVerifyCertificateChainPolicy
CertVerifyTimeValidity
CryptAcquireCertificatePrivateKey
CryptBinaryToStringA
CryptDecodeObjectEx
CryptEncodeObjectEx
CryptHashCertificate
CryptStringToBinaryA
PFXExportCertStore
PFXImportCertStore

kernel32

AcquireSRWLockExclusive
AcquireSRWLockShared
AddVectoredExceptionHandler
CancelIo
CancelIoEx
CloseHandle
CompareStringOrdinal
ConnectNamedPipe
CopyFileExW
CreateDirectoryW
CreateEventW
CreateFileMappingA
CreateFileW
CreateHardLinkW
CreateIoCompletionPort
CreateMutexA
CreateNamedPipeW
CreateProcessW
CreateSymbolicLinkW
CreateThread
CreateToolhelp32Snapshot
DeleteFileW
DeviceIoControl
DisconnectNamedPipe
DuplicateHandle
ExitProcess
FileTimeToSystemTime
FillConsoleOutputAttribute
FillConsoleOutputCharacterA
FindClose
FindFirstFileW
FindNextFileW
FlushFileBuffers
FormatMessageW
FreeEnvironmentStringsW
FreeLibrary
GetCommandLineW
GetConsoleCursorInfo
GetConsoleMode
GetConsoleScreenBufferInfo
GetCurrentDirectoryW
GetCurrentProcess
GetCurrentProcessId
GetCurrentThread
GetEnvironmentStringsW
GetEnvironmentVariableW
GetExitCodeProcess
GetFileAttributesW
GetFileInformationByHandle
GetFileInformationByHandleEx
GetFileType
GetFinalPathNameByHandleW
GetFullPathNameW
GetLastError
GetLogicalProcessorInformation
GetModuleFileNameW
GetModuleHandleA
GetModuleHandleW
GetNamedPipeInfo
GetNumberOfConsoleInputEvents
GetOverlappedResult
GetProcAddress
GetProcessHeap
GetProcessId
GetQueuedCompletionStatusEx
GetStartupInfoA
GetStdHandle
GetSystemDirectoryW
GetSystemInfo
GetSystemTimeAsFileTime
GetTempPathW
GetWindowsDirectoryW
HeapAlloc
HeapFree
HeapReAlloc
InitOnceBeginInitialize
InitOnceComplete
LoadLibraryA
LocalFree
MapViewOfFile
Module32FirstW
Module32NextW
MoveFileExW
PostQueuedCompletionStatus
QueryPerformanceCounter
QueryPerformanceFrequency
ReOpenFile
ReadConsoleInputW
ReadConsoleW
ReadFile
ReadFileEx
ReleaseMutex
ReleaseSRWLockExclusive
ReleaseSRWLockShared
RemoveDirectoryW
SetConsoleCursorInfo
SetConsoleCursorPosition
SetConsoleMode
SetConsoleTextAttribute
SetConsoleTitleW
SetCurrentDirectoryW
SetEnvironmentVariableW
SetFileAttributesW
SetFileCompletionNotificationModes
SetFileInformationByHandle
SetFilePointerEx
SetFileTime
SetHandleInformation
SetLastError
SetThreadStackGuarantee
SetUnhandledExceptionFilter
Sleep
SleepConditionVariableSRW
SleepEx
SwitchToThread
SystemTimeToFileTime
SystemTimeToTzSpecificLocalTime
TerminateProcess
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
TryAcquireSRWLockExclusive
TryAcquireSRWLockShared
UnmapViewOfFile
WaitForMultipleObjects
WaitForSingleObject
WaitForSingleObjectEx
WakeAllConditionVariable
WakeConditionVariable
WriteConsoleW
WriteFile
WriteFileEx
DeleteCriticalSection
EnterCriticalSection
InitializeCriticalSection
LeaveCriticalSection
RaiseException
RtlUnwindEx
VirtualProtect
VirtualQuery
__C_specific_handler

ncrypt

NCryptFreeObject

secur32

AcceptSecurityContext
AcquireCredentialsHandleA
ApplyControlToken
DecryptMessage
DeleteSecurityContext
EncryptMessage
FreeContextBuffer
FreeCredentialsHandle
InitializeSecurityContextW
QueryContextAttributesW

userenv

GetUserProfileDirectoryW

ws2_32

WSACleanup
WSADuplicateSocketW
WSAGetLastError
WSAIoctl
WSAPoll
WSARecv
WSARecvFrom
WSASend
WSASendTo
WSASocketW
WSAStartup
accept
bind
closesocket
connect
freeaddrinfo
getaddrinfo
getpeername
getsockname
getsockopt
ioctlsocket
listen
recv
recvfrom
select
send
sendto
setsockopt
shutdown
socket

ucrtbase

__acrt_iob_func
__daylight
__p___argc
__p___argv
__p___wargv
__p__acmdln
__p__commode
__p__environ
__p__fmode
__p__wenviron
__setusermatherr
__stdio_common_vfprintf
__stdio_common_vfwprintf
__timezone
__tzname
_cexit
_configure_narrow_argv
_configure_wide_argv
_crt_at_quick_exit
_crt_atexit
_errno
_fpreset
_initialize_narrow_environment
_initialize_wide_environment
_initterm
_set_app_type
_set_invalid_parameter_handler
_set_new_mode
_tzset
abort
calloc
exit
fmod
fmodf
free
fwrite
log
malloc
memcmp
memcpy
memmove
memset
round
signal
strlen
strncmp
trunc
truncf

ntdll

NtCancelIoFileEx
NtCreateFile
NtDeviceIoControlFile
RtlCaptureContext
RtlLookupFunctionEntry
RtlNtStatusToDosError
RtlVirtualUnwind

Sections

.text
Size: 5.6MB - Virtual size: 5.6MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 20KB - Virtual size: 19KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 1.5MB - Virtual size: 1.5MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

/4
Size: 512B - Virtual size: 4B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 181KB - Virtual size: 181KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.xdata
Size: 442KB - Virtual size: 442KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.bss
Size: - Virtual size: 1KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.idata
Size: 11KB - Virtual size: 11KB

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

.reloc
Size: 49KB - Virtual size: 49KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/14
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/29
Size: 511KB - Virtual size: 510KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/45
Size: 1.1MB - Virtual size: 1.1MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/57
Size: 12KB - Virtual size: 12KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/71
Size: 477KB - Virtual size: 477KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/83
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/96
Size: 1.2MB - Virtual size: 1.2MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/107
Size: 512B - Virtual size: 234B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/123
Size: 510KB - Virtual size: 510KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/137
Size: 10KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/153
Size: 435KB - Virtual size: 435KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/169
Size: 354KB - Virtual size: 353KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

/182
Size: 44KB - Virtual size: 44KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

3aa5157885cfafda1f2354ba04faaaa1

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

bcrypt

crypt32

kernel32

ncrypt

secur32

userenv

ws2_32

ucrtbase

ntdll

Sections

.text Size: 5.6MB - Virtual size: 5.6MB

.data Size: 20KB - Virtual size: 19KB

.rdata Size: 1.5MB - Virtual size: 1.5MB

/4 Size: 512B - Virtual size: 4B

.pdata Size: 181KB - Virtual size: 181KB

.xdata Size: 442KB - Virtual size: 442KB

.bss Size: - Virtual size: 1KB

.idata Size: 11KB - Virtual size: 11KB

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

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

.reloc Size: 49KB - Virtual size: 49KB

/14 Size: 2KB - Virtual size: 2KB

/29 Size: 511KB - Virtual size: 510KB

/45 Size: 1.1MB - Virtual size: 1.1MB

/57 Size: 12KB - Virtual size: 12KB

/71 Size: 477KB - Virtual size: 477KB

/83 Size: 9KB - Virtual size: 9KB

/96 Size: 1.2MB - Virtual size: 1.2MB

/107 Size: 512B - Virtual size: 234B

/123 Size: 510KB - Virtual size: 510KB

/137 Size: 10KB - Virtual size: 9KB

/153 Size: 435KB - Virtual size: 435KB

/169 Size: 354KB - Virtual size: 353KB

/182 Size: 44KB - Virtual size: 44KB

.text
Size: 5.6MB - Virtual size: 5.6MB

.data
Size: 20KB - Virtual size: 19KB

.rdata
Size: 1.5MB - Virtual size: 1.5MB

/4
Size: 512B - Virtual size: 4B

.pdata
Size: 181KB - Virtual size: 181KB

.xdata
Size: 442KB - Virtual size: 442KB

.bss
Size: - Virtual size: 1KB

.idata
Size: 11KB - Virtual size: 11KB

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

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

.reloc
Size: 49KB - Virtual size: 49KB

/14
Size: 2KB - Virtual size: 2KB

/29
Size: 511KB - Virtual size: 510KB

/45
Size: 1.1MB - Virtual size: 1.1MB

/57
Size: 12KB - Virtual size: 12KB

/71
Size: 477KB - Virtual size: 477KB

/83
Size: 9KB - Virtual size: 9KB

/96
Size: 1.2MB - Virtual size: 1.2MB

/107
Size: 512B - Virtual size: 234B

/123
Size: 510KB - Virtual size: 510KB

/137
Size: 10KB - Virtual size: 9KB

/153
Size: 435KB - Virtual size: 435KB

/169
Size: 354KB - Virtual size: 353KB

/182
Size: 44KB - Virtual size: 44KB