821d57d8c4f9d1f10c3ac8a8a095b0b2d7fcb463991904f2012265ca6592e24c[.]sample

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General

Target

821d57d8c4f9d1f10c3ac8a8a095b0b2d7fcb463991904f2012265ca6592e24c.sample
Size

250KB
MD5

34b6a2858b32f25433101d72705f1421
SHA1

55e31f9c1ca8dd03cb924631d371d0fb5a08bf6a
SHA256

821d57d8c4f9d1f10c3ac8a8a095b0b2d7fcb463991904f2012265ca6592e24c
SHA512

18fa6de0d483036f52e7997494ee5da3a5a79f7f27be3e40fec630297f7be702a048a30caa3ddb0a0f8a026f49beceb94218243753f0599b862b9cf1ac94adce
SSDEEP

6144:qa0Y9MHhZhPMgjlBmXn1DxttmQIWqgYfI5CeDo:qoeNjrUn1tt/pqio

Score

10^/10

Malware Config

Signatures

Detects executables containing commands for clearing Windows Event Logs 1 IoCs

resource	yara_rule
sample	INDICATOR_SUSPICIOUS_ClearWinLogs

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
821d57d8c4f9d1f10c3ac8a8a095b0b2d7fcb463991904f2012265ca6592e24c.sample

Files

821d57d8c4f9d1f10c3ac8a8a095b0b2d7fcb463991904f2012265ca6592e24c.sample
.exe windows:6 windows x86 arch:x86

aacd448f5c1aee3f14cb8d00004db14c

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

Sleep
GetLastError
GetNativeSystemInfo
ExitProcess
OpenMutexW
GetTickCount
FindFirstFileW
GetFileSizeEx
FindFirstVolumeW
FindNextFileW
WaitForMultipleObjects
SetThreadPriority
GetQueuedCompletionStatus
FindClose
GetFileAttributesW
ResumeThread
PostQueuedCompletionStatus
SetFileAttributesW
GetExitCodeThread
GetCurrentThread
GetSystemInfo
LoadLibraryW
CreateThread
SetVolumeMountPointW
SetFilePointerEx
MoveFileExW
FindVolumeClose
GetCurrentProcessId
SetThreadExecutionState
GetVolumePathNamesForVolumeNameW
FindNextVolumeW
CreateIoCompletionPort
HeapCreate
HeapFree
HeapAlloc
GetProcessHeap
WideCharToMultiByte
CancelIo
CreateTimerQueueTimer
DeleteTimerQueue
CreateTimerQueue
LocalFree
ReleaseSemaphore
CreateSemaphoreW
DecodePointer
GetConsoleMode
GetConsoleOutputCP
ReleaseMutex
HeapSize
WaitForSingleObject
CreateMutexW
SetProcessShutdownParameters
TerminateProcess
SetPriorityClass
ReadFile
DeleteCriticalSection
GetLocalTime
lstrcatW
CreateFileW
SetFilePointer
InitializeCriticalSection
LeaveCriticalSection
LCMapStringW
GetModuleFileNameW
WriteFile
EnterCriticalSection
lstrcmpiA
FindResourceW
LoadResource
LockResource
MultiByteToWideChar
SizeofResource
GetDriveTypeW
GetModuleHandleW
GetComputerNameW
GetProcAddress
CloseHandle
GetDiskFreeSpaceExW
lstrlenA
GetCommandLineW
GetCurrentProcess
GetLogicalDrives
lstrcmpiW
lstrcpyW
lstrlenW
GetStringTypeW
SetStdHandle
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineA
GetCPInfo
GetOEMCP
GetACP
IsValidCodePage
FindFirstFileExW
HeapReAlloc
GetFileType
GetModuleHandleExW
GetStdHandle
LoadLibraryExW
FreeLibrary
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
InitializeCriticalSectionAndSpinCount
EncodePointer
SetLastError
RaiseException
RtlUnwind
IsProcessorFeaturePresent
GetStartupInfoW
SetUnhandledExceptionFilter
UnhandledExceptionFilter
IsDebuggerPresent
InitializeSListHead
GetSystemTimeAsFileTime
GetCurrentThreadId
QueryPerformanceCounter
OpenProcess
FlushFileBuffers
WriteConsoleW

user32

GetDC
DrawTextW
SystemParametersInfoW
ReleaseDC
wsprintfW

gdi32

SetBkColor
CreateCompatibleBitmap
SelectObject
CreateCompatibleDC
CreateFontW
GetDIBits
GetDeviceCaps
DeleteDC
GetTextExtentPoint32W
SetTextColor
SetBkMode
DeleteObject

winspool.drv

OpenPrinterW
ClosePrinter
StartPagePrinter
EnumPrintersW
StartDocPrinterW
WritePrinter

advapi32

DuplicateToken
GetTokenInformation
AllocateAndInitializeSid
SetEntriesInAclW
SetNamedSecurityInfoW
FreeSid
SetThreadToken
RegCloseKey
CloseServiceHandle
OpenSCManagerW
RegCreateKeyExW
DeleteService
ControlService
EnumDependentServicesW
RegSetValueExW
RegOpenKeyExW
OpenServiceW
QueryServiceStatusEx
RegQueryValueExW
OpenProcessToken
GetUserNameW

shell32

SHEmptyRecycleBinW
SHGetFolderPathW
ShellExecuteW
SHChangeNotify
CommandLineToArgvW

ole32

CoUninitialize
CoSetProxyBlanket
CoInitialize
CoCreateInstance

oleaut32

SysAllocString
SysFreeString
VariantInit
VariantClear

rstrtmgr

RmStartSession
RmEndSession
RmGetList
RmRegisterResources

netapi32

NetGetJoinInformation
NetApiBufferFree
NetShareEnum

ws2_32

WSAStartup
WSACleanup
socket
WSAAddressToStringW
getsockopt
htonl
WSASocketW
shutdown
ntohl
closesocket
WSAIoctl
bind
inet_addr
htons
setsockopt
WSAGetLastError

iphlpapi

GetAdaptersInfo

wininet

InternetCloseHandle
InternetConnectW
InternetReadFile
InternetOpenW
InternetOpenUrlW
HttpOpenRequestW
HttpSendRequestW

shlwapi

PathRemoveExtensionW
PathRemoveFileSpecW
StrRChrW
PathAddBackslashW
StrStrIW
PathFindExtensionW

ntdll

NtQuerySystemInformation
RtlRandomEx
NtShutdownSystem
RtlAdjustPrivilege

Sections

.text
Size: 152KB - Virtual size: 152KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 42KB - Virtual size: 42KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 3KB - Virtual size: 6KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 43KB - Virtual size: 42KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

aacd448f5c1aee3f14cb8d00004db14c

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

winspool.drv

advapi32

shell32

ole32

oleaut32

rstrtmgr

netapi32

ws2_32

iphlpapi

wininet

shlwapi

ntdll

Sections

.text Size: 152KB - Virtual size: 152KB

.rdata Size: 42KB - Virtual size: 42KB

.data Size: 3KB - Virtual size: 6KB

.rsrc Size: 43KB - Virtual size: 42KB

.reloc Size: 8KB - Virtual size: 7KB

.text
Size: 152KB - Virtual size: 152KB

.rdata
Size: 42KB - Virtual size: 42KB

.data
Size: 3KB - Virtual size: 6KB

.rsrc
Size: 43KB - Virtual size: 42KB

.reloc
Size: 8KB - Virtual size: 7KB