Static task
static1
Behavioral task
behavioral1
Sample
writer.dll.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
writer.dll.exe
Resource
win10v2004-20230220-en
General
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Target
writer.dll.exe
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Size
268KB
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MD5
ba285fbc050e319860e70bc07dd50c3c
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SHA1
2ad031a44e81f889e2b7b98747cd2b178b36f556
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SHA256
3efc3f7e277654bc03da3b5244b665cae3a93d78c8d3e0f452f55102b7d7319a
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SHA512
b365ef69f69863b4cc759c32b158997dbafa85a491dba25325e8e3606a8097c6e0f31c04a12e62de92b071c1743d64da5a597e131c1402ac655432c4e1e719a5
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SSDEEP
6144:ZVesLZ0WNuvi4RlfqlNVg014CfR5Zzf3a:9OWNu3RpqlNVg0usz9/
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource writer.dll.exe
Files
-
writer.dll.exe.exe windows x86
c26aa34e07553395b9f4b332479ac4dd
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE
Imports
kernel32
GetConsoleAliasA
GetLogicalDriveStringsW
InterlockedCompareExchange
SetComputerNameW
AddConsoleAliasW
SetTapeParameters
GetModuleHandleW
EnumCalendarInfoExW
GetConsoleTitleA
ReadConsoleW
TlsSetValue
GlobalAlloc
LoadLibraryW
FatalAppExitW
GetCalendarInfoW
HeapDestroy
FindNextVolumeW
LocalReAlloc
ReplaceFileW
GetModuleFileNameW
CreateActCtxA
lstrlenW
GlobalUnlock
GetStringTypeExA
ReadConsoleA
EnumSystemLocalesA
GetLastError
IsDBCSLeadByteEx
SetLastError
GetProcAddress
VirtualAlloc
BeginUpdateResourceW
ReadFileEx
ResetEvent
InterlockedExchangeAdd
DnsHostnameToComputerNameA
FindFirstVolumeMountPointW
GetNumberFormatW
GetDefaultCommConfigA
GetModuleHandleA
QueryMemoryResourceNotification
GetProcessAffinityMask
RequestWakeupLatency
OpenEventW
SetProcessShutdownParameters
FindAtomW
GetWindowsDirectoryW
GetTempPathA
FindNextVolumeA
WriteConsoleOutputW
GetConsoleAliasesLengthW
SetThreadContext
GetLargestConsoleWindowSize
GetTempFileNameW
InterlockedIncrement
InterlockedDecrement
Sleep
InitializeCriticalSection
DeleteCriticalSection
EnterCriticalSection
LeaveCriticalSection
HeapFree
HeapAlloc
GetStartupInfoW
RaiseException
RtlUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
GetCurrentProcess
IsDebuggerPresent
HeapCreate
VirtualFree
HeapReAlloc
ExitProcess
WriteFile
GetStdHandle
GetModuleFileNameA
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetCommandLineW
SetHandleCount
GetFileType
GetStartupInfoA
TlsGetValue
TlsAlloc
TlsFree
GetCurrentThreadId
QueryPerformanceCounter
GetTickCount
GetCurrentProcessId
GetSystemTimeAsFileTime
HeapSize
GetCPInfo
GetACP
GetOEMCP
IsValidCodePage
GetLocaleInfoA
GetStringTypeA
MultiByteToWideChar
GetStringTypeW
InitializeCriticalSectionAndSpinCount
LoadLibraryA
LCMapStringA
WideCharToMultiByte
LCMapStringW
gdi32
GetCharABCWidthsFloatW
GetCharWidthW
EnumFontsW
GetCharABCWidthsI
Sections
.text Size: 157KB - Virtual size: 157KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 6KB - Virtual size: 4.8MB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.rsrc Size: 84KB - Virtual size: 83KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 19KB - Virtual size: 18KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ