Holzer[.]zip | Triage

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General

Target

Holzer.zip
Size

50KB
MD5

46c66dccda54ac15c941e7589a5da5ca
SHA1

49a4f3b61753f261fc5f3e7d69f599ac0a5e083e
SHA256

f7f624d237f1d81858259c1783be9c7a605fe260b22092af064bc91035010fef
SHA512

c4c96aebf3d0de7127e3e45c5670323781ed8ae4bc0413c6b35cb2f5e9ee8ccaf84d5dbf655b384a1cec4b8d8fcbe5970c43e79bad76cf9a17ada1b3717c57a2
SSDEEP

1536:5dlKxgjOc91+xkuSL7/jVqFqGBh8tCxFngg/:PlJjOc9WkuoQtF1gg/

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Holzer.exe

Files

Holzer.zip
.zip

Password: infected
Holzer.exe
.exe windows x86

Password: infected

b06fc75acce8d89c0625facf40b66ff6

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

FlushFileBuffers
HeapReAlloc
HeapSize
GetProcessHeap
GetStringTypeW
GetFileType
SetStdHandle
GetConsoleCP
LCMapStringW
CompareStringW
SetEnvironmentVariableA
FreeEnvironmentStringsW
GetConsoleMode
SetFilePointerEx
WriteConsoleW
DecodePointer
GetProcAddress
CreateThread
LoadLibraryA
TerminateThread
Sleep
SetSystemTime
DeleteVolumeMountPointA
FindNextFileW
GetCurrentProcess
FindFirstFileW
GetConsoleWindow
ExitProcess
CloseHandle
CreateFileA
WriteFile
GetEnvironmentStringsW
GetCPInfo
GetOEMCP
IsValidCodePage
FindNextFileA
FindFirstFileExA
FindClose
HeapFree
UnhandledExceptionFilter
SetUnhandledExceptionFilter
TerminateProcess
IsProcessorFeaturePresent
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
RtlUnwind
GetLastError
SetLastError
EnterCriticalSection
LeaveCriticalSection
DeleteCriticalSection
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
LoadLibraryExW
RaiseException
GetStdHandle
GetModuleFileNameA
MultiByteToWideChar
WideCharToMultiByte
GetModuleHandleExW
GetCommandLineA
GetCommandLineW
GetACP
HeapAlloc
CreateFileW

user32

SendInput
GetCursorPos
MessageBoxA
EnableWindow
ShowWindow
SetCursorPos
GetSystemMenu
GetWindowRect
GetDC
SetWindowPos
GetSystemMetrics
VkKeyScanA
DrawIcon
GetCursorInfo
SetWindowLongA
ExitWindowsEx
GetWindowLongA
SetWindowTextA
GetForegroundWindow
LoadIconW
GetDesktopWindow
EnableMenuItem

gdi32

BitBlt
SelectObject
PatBlt
StretchBlt
PlgBlt
CreateRectRgn
CreatePen
Rectangle
SelectClipRgn
Ellipse
CreateSolidBrush
CreateEllipticRgn

advapi32

AdjustTokenPrivileges
OpenProcessToken
RegCloseKey
RegCreateKeyExW
RegSetValueExW
LookupPrivilegeValueW

shell32

ShellExecuteW

winmm

waveOutOpen
waveOutReset
waveOutClose
waveOutUnprepareHeader
waveOutWrite
waveOutPrepareHeader

Sections

.text
Size: 56KB - Virtual size: 55KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 29KB - Virtual size: 28KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
README.txt

Sharing

General

Malware Config

Signatures

Files

Password: infected

Password: infected

b06fc75acce8d89c0625facf40b66ff6

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

advapi32

shell32

winmm

Sections

.text Size: 56KB - Virtual size: 55KB

.rdata Size: 29KB - Virtual size: 28KB

.data Size: 2KB - Virtual size: 4KB

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

.reloc Size: 4KB - Virtual size: 4KB

.text
Size: 56KB - Virtual size: 55KB

.rdata
Size: 29KB - Virtual size: 28KB

.data
Size: 2KB - Virtual size: 4KB

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

.reloc
Size: 4KB - Virtual size: 4KB