agenttesla | SilentDown[.]exe

Sharing

Copy URL Twitter E-mail

General

Target

SilentDown.exe
Size

349.7MB
MD5

5ed892ac696bf2eca8e3136395ed36aa
SHA1

dbbf4ce8a97ddbb44491989e7fd6891ca0b8fc0c
SHA256

3d22590b9ba1963fd8b5fcc255b16a8e90c0b14937a204424d5fa575865001ed
SHA512

0555ced186c2482adb3658883d057e45ba28d1b282ea4d3d235cd28283119ef638751263e8516c008bcc23722bb35a8e6e9193dcdcfd181fd435db3838d8cd40
SSDEEP

1572864:ehJ4LpgF3TVGnBJm9pkcEtABowf2+7p9rGjdg:8J/F3VnlE+t5Gjd

Score

10^/10

agenttesla

Malware Config

Signatures

AgentTesla payload 1 IoCs

resource	yara_rule
sample	family_agenttesla

Agenttesla family
agenttesla

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
SilentDown.exe

Files

SilentDown.exe
.exe windows:6 windows x64 arch:x64

bd570ded433309fe3759b368b0ec3e8c

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

D:\a\_work\1\s\artifacts\obj\coreclr\windows.x64.Release\Corehost.Static\singlefilehost.pdb

Imports

kernel32

MultiByteToWideChar
GetTickCount
QueryPerformanceFrequency
QueryPerformanceCounter
GetModuleHandleW
FlushInstructionCache
RtlLookupFunctionEntry
RtlDeleteFunctionTable
InterlockedPushEntrySList
InterlockedFlushSList
InitializeSListHead
GetTickCount64
DuplicateHandle
QueueUserAPC
WaitForSingleObjectEx
SetThreadPriority
GetThreadPriority
ResumeThread
GetCurrentThreadId
Sleep
TlsAlloc
GetCurrentThread
CreateThread
WaitForMultipleObjectsEx
SignalObjectAndWait
RtlCaptureContext
SetThreadStackGuarantee
VirtualQuery
GetStdHandle
WideCharToMultiByte
GetConsoleOutputCP
MapViewOfFileEx
UnmapViewOfFile
GetStringTypeExW
SetEvent
GetCurrentProcessorNumber
GlobalMemoryStatusEx
CreateIoCompletionPort
PostQueuedCompletionStatus
SleepEx
GetQueuedCompletionStatus
InterlockedPopEntrySList
GetCurrentProcessorNumberEx
ExitProcess
CreateMemoryResourceNotification
GetProcessAffinityMask
SetThreadIdealProcessorEx
GetThreadIdealProcessorEx
GetLargePageMinimum
VirtualUnlock
GetLogicalProcessorInformation
SetThreadGroupAffinity
SetThreadAffinityMask
IsProcessInJob
QueryInformationJobObject
K32GetProcessMemoryInfo
VirtualAlloc
VirtualFree
VirtualProtect
SwitchToThread
CloseThreadpoolTimer
CreateThreadpoolTimer
SetThreadpoolTimer
GetFileSize
GetEnvironmentVariableW
SetEnvironmentVariableW
CreateEventW
ResetEvent
CreateSemaphoreExW
ReleaseSemaphore
CreateMutexW
ReleaseMutex
GetThreadContext
SuspendThread
SetThreadContext
GetEnabledXStateFeatures
InitializeContext
RtlRestoreContext
SetXStateFeaturesMask
RtlInstallFunctionTableCallback
GetSystemDefaultLCID
GetUserDefaultLCID
RtlUnwind
LoadLibraryExW
HeapAlloc
HeapFree
GetProcessHeap
HeapCreate
HeapDestroy
GetEnvironmentStringsW
FreeEnvironmentStringsW
FormatMessageW
OutputDebugStringA
GetACP
LCMapStringEx
LocalFree
VerSetConditionMask
VerifyVersionInfoW
FindClose
GetEnvironmentVariableA
GetModuleFileNameW
FindNextFileW
QueryThreadCycleTime
VirtualAllocExNuma
GetNumaProcessorNodeEx
GetNumaHighestNodeNumber
GetLogicalProcessorInformationEx
GetThreadGroupAffinity
GetSystemTimes
GetSystemTimeAsFileTime
CreateFileMappingW
CreateProcessW
GetCPInfo
CreateFileW
GetFileAttributesExW
GetTempPathW
GetCurrentDirectoryW
FindFirstFileExW
GetFullPathNameW
OpenProcess
LoadLibraryExA
OpenEventW
ExitThread
HeapReAlloc
CreateNamedPipeA
WaitForMultipleObjects
DisconnectNamedPipe
CreateFileA
CancelIoEx
GetOverlappedResult
ConnectNamedPipe
FlushFileBuffers
MapViewOfFile
GetActiveProcessorGroupCount
GetSystemTime
SetConsoleCtrlHandler
GetLocaleInfoEx
GetUserDefaultLocaleName
RtlAddFunctionTable
CreateDirectoryW
RemoveDirectoryW
GetFileSizeEx
LoadLibraryA
IsWow64Process
EncodePointer
DecodePointer
InitializeCriticalSectionAndSpinCount
AddVectoredExceptionHandler
SetUnhandledExceptionFilter
UnhandledExceptionFilter
TerminateProcess
GetCurrentProcessId
RaiseFailFastException
FreeLibrary
RaiseException
WaitForSingleObject
TlsSetValue
TlsGetValue
GetSystemInfo
IsDebuggerPresent
LeaveCriticalSection
EnterCriticalSection
DeleteCriticalSection
InitializeCriticalSection
WriteFile
GetProcessTimes
GetCommandLineW
ReadFile
SetFilePointer
GetProcAddress
GetModuleHandleExW
SetErrorMode
CloseHandle
GetCurrentProcess
FlushProcessWriteBuffers
SetLastError
GetLastError
OutputDebugStringW
DebugBreak
GetStringTypeW
RtlVirtualUnwind
IsProcessorFeaturePresent
RtlUnwindEx
TlsFree
RtlPcToFileHeader
InitializeConditionVariable
WakeConditionVariable
WakeAllConditionVariable
SleepConditionVariableCS
SleepConditionVariableSRW
InitializeSRWLock
ReleaseSRWLockExclusive
AcquireSRWLockExclusive
InitializeCriticalSectionEx
TryEnterCriticalSection
GetExitCodeThread
CreateFileMappingA

advapi32

RegGetValueW
SetKernelObjectSecurity
GetSidSubAuthorityCount
GetSidSubAuthority
GetTokenInformation
DeregisterEventSource
ReportEventW
RegisterEventSourceW
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
EventRegister
AdjustTokenPrivileges
OpenProcessToken
LookupPrivilegeValueW
SetThreadToken
RevertToSelf
OpenThreadToken
EventWriteTransfer
EventWrite

ole32

CoTaskMemAlloc
CoTaskMemFree
CoWaitForMultipleHandles
IIDFromString
CLSIDFromProgID
CoGetMarshalSizeMax
CoCreateGuid
CoUnmarshalInterface
CoGetObjectContext
CoGetContextToken
CoInitializeEx
CoGetClassObject
CoCreateFreeThreadedMarshaler
CreateStreamOnHGlobal
StringFromGUID2
CoMarshalInterface
CoRegisterInitializeSpy
CoUninitialize
CoRevokeInitializeSpy
CoReleaseMarshalData

oleaut32

GetRecordInfoFromTypeInfo
SafeArraySetRecordInfo
SafeArrayAllocData
SafeArrayGetElemsize
SysStringByteLen
SysAllocStringByteLen
SafeArrayCreateVector
SafeArrayPutElement
LoadRegTypeLi
CreateErrorInfo
VariantInit
VariantClear
SafeArrayAllocDescriptorEx
VariantChangeType
SafeArrayGetVartype
LoadTypeLibEx
QueryPathOfRegTypeLi
SafeArrayDestroy
SafeArrayGetLBound
SafeArrayGetDim
SysAllocStringLen
SysStringLen
SysAllocString
SetErrorInfo
GetErrorInfo
SysFreeString
VariantChangeTypeEx
VarCyFromDec

user32

MessageBoxW
LoadStringW

shell32

ShellExecuteW

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

_strnicmp
iswupper
towlower
isalpha
isdigit
wcstok_s
strnlen
iswascii
towupper
wcscat_s
strncmp
wcscpy_s
strcspn
strcpy_s
strlen
isupper
strcmp
_wcsnicmp
_wcsdup
wcsncpy_s
_wcsicmp
islower
tolower
strtok_s
isspace
_strdup
__strncnt
wcsncat_s
strncat_s
_stricmp
iswspace
wcsnlen
strncpy_s
wcsncmp
strcat_s

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

__p__commode
__stdio_common_vfwprintf
__stdio_common_vswprintf_s
_putws
_set_fmode
fwrite
fseek
_wfopen
fclose
fputws
fputwc
_get_stream_buffer_pointers
_wfsopen
ftell
__stdio_common_vfprintf
_fileno
__stdio_common_vsprintf_s
_fseeki64
__acrt_iob_func
fflush
_dup
_setmode
setvbuf
__stdio_common_vswprintf
fread
fsetpos
ungetc
fgetpos
fgetc
fputc
fgets
__stdio_common_vsscanf
__stdio_common_vsnprintf_s
_flushall
__stdio_common_vsnwprintf_s
fputs
fopen

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

terminate
_wcserror
_beginthreadex
_invalid_parameter_noinfo_noreturn
_controlfp_s
abort
exit
_initialize_onexit_table
_register_onexit_function
_crt_atexit
_cexit
_seh_filter_exe
_set_app_type
_invalid_parameter_noinfo
_configure_wide_argv
_initialize_wide_environment
_get_initial_wide_environment
_initterm
_initterm_e
_exit
_errno
__p___argc
__p___wargv
_c_exit
_register_thread_local_exe_atexit_callback

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

_atoi64
atol
_wtoi
strtoull
_ltow_s
strtoul
wcstoul
_wcstoui64
_itow_s

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

free
malloc
_set_new_mode
calloc
realloc

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

qsort

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

cosf
cos
ceilf
ceil
atanf
atan2f
atan2
atan
asinf
asin
coshf
acos
exp
powf
expf
log2
atanh
acosh
ilogb
cbrt
asinh
asinhf
ilogbf
atanhf
cbrtf
acoshf
log2f
pow
floor
floorf
_copysign
_isnan
_finite
modf
modff
_fdopen
fma
fmaf
_copysignf
_isnanf
fmod
fmodf
cosh
log
log10
frexp
log10f
logf
sin
__setusermatherr
sinf
sinh
sinhf
sqrt
sqrtf
tan
tanf
tanh
acosf
tanhf

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

_time64
wcsftime
_gmtime64_s

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

___lc_codepage_func
___mb_cur_max_func
localeconv
_unlock_locales
___lc_locale_name_func
setlocale
__pctype_func
_lock_locales
_configthreadlocale

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

_wremove
_wrename
_lock_file
_unlock_file

Exports

Exports

CLRJitAttachState
DotNetRuntimeInfo
MetaDataGetDispenser
g_CLREngineMetrics

Sections

.text
Size: 6.0MB - Virtual size: 6.0MB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.CLR_UEF
Size: 512B - Virtual size: 271B

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 28KB - Virtual size: 120KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 215KB - Virtual size: 214KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.didat
Size: 512B - Virtual size: 56B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

Section
Size: 512B - Virtual size: 8B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

_RDATA
Size: 77KB - Virtual size: 76KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 1.3MB - Virtual size: 1.3MB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

bd570ded433309fe3759b368b0ec3e8c

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

kernel32

advapi32

ole32

oleaut32

user32

shell32

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

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

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

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

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

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

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

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

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

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

Exports

Exports

Sections

.text Size: 6.0MB - Virtual size: 6.0MB

.CLR_UEF Size: 512B - Virtual size: 271B

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

.data Size: 28KB - Virtual size: 120KB

.pdata Size: 215KB - Virtual size: 214KB

.didat Size: 512B - Virtual size: 56B

Section Size: 512B - Virtual size: 8B

_RDATA Size: 77KB - Virtual size: 76KB

.rsrc Size: 1.3MB - Virtual size: 1.3MB

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

.text
Size: 6.0MB - Virtual size: 6.0MB

.CLR_UEF
Size: 512B - Virtual size: 271B

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

.data
Size: 28KB - Virtual size: 120KB

.pdata
Size: 215KB - Virtual size: 214KB

.didat
Size: 512B - Virtual size: 56B

Section
Size: 512B - Virtual size: 8B

_RDATA
Size: 77KB - Virtual size: 76KB

.rsrc
Size: 1.3MB - Virtual size: 1.3MB

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