Teams_Update[.]zip

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General

Target

Teams_Update.zip
Size

140KB
MD5

f060e5497757f95f5e4efbe5d363d0b2
SHA1

5ea3f3df37a6feb0c528f902e8388a92e34a469e
SHA256

1185cd4de25c5f88cd8f47b6f265c0ed7fd43ac8f13ab5bf553e37aaf7a57e01
SHA512

6ac9679a7585766dd39d737af2b7470e4f094955de364b7630f257e0f0083e6bcbbc13d3b8d9afc0ac889f6a4bdd2933065a86a008c605f2bfb376195d14f6a8
SSDEEP

3072:/y7p2+e3EWnGUiuwEdfRhDpssBJgvA4xmwTnjPVRIRjevt4fhm8:/yl2aWnTd7lrfgvDxZBRIan8

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/Teams_Update.exe

Files

Teams_Update.zip
.zip

Password: infected
Teams_Update.exe
.exe windows:6 windows x64 arch:x64

3ef59967e8fda470ece13de424bf52cc

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

Imports

kernel32

GetLastError
WriteConsoleW
HeapSize
CreateFileW
SetStdHandle
GetProcessHeap
SetEnvironmentVariableW
FreeEnvironmentStringsW
GetEnvironmentStringsW
GetOEMCP
GetACP
IsValidCodePage
FindNextFileW
FindFirstFileExW
FindClose
HeapReAlloc
ReadConsoleW
ReadFile
EnumSystemLocalesW
GetUserDefaultLCID
IsValidLocale
GetLocaleInfoW
LCMapStringW
CompareStringW
GetTimeFormatW
GetDateFormatW
FlsFree
FlsSetValue
FlsGetValue
FlsAlloc
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSectionEx
DeleteCriticalSection
EncodePointer
DecodePointer
MultiByteToWideChar
WideCharToMultiByte
LCMapStringEx
GetStringTypeW
GetCPInfo
RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
IsProcessorFeaturePresent
IsDebuggerPresent
GetStartupInfoW
GetModuleHandleW
QueryPerformanceCounter
GetCurrentProcessId
GetCurrentThreadId
GetSystemTimeAsFileTime
InitializeSListHead
RtlUnwindEx
RtlPcToFileHeader
RaiseException
SetLastError
InitializeCriticalSectionAndSpinCount
TlsAlloc
TlsGetValue
TlsSetValue
TlsFree
FreeLibrary
GetProcAddress
LoadLibraryExW
RtlUnwind
ExitProcess
GetModuleHandleExW
GetModuleFileNameW
GetStdHandle
WriteFile
GetCommandLineA
GetCommandLineW
GetFileSizeEx
SetFilePointerEx
GetFileType
GetTimeZoneInformation
FlushFileBuffers
GetConsoleOutputCP
GetConsoleMode
HeapFree
CloseHandle
HeapAlloc
SetEndOfFile

user32

FindWindowA
MapVirtualKeyExA
SetWindowsHookExW
GetForegroundWindow
GetKeyboardLayout
GetWindowThreadProcessId
GetMessageW
GetKeyState
CallNextHookEx
ShowWindow
GetWindowTextA

Sections

.text
Size: 180KB - Virtual size: 179KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 75KB - Virtual size: 75KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 5KB - Virtual size: 10KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 9KB - Virtual size: 9KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

_RDATA
Size: 512B - Virtual size: 348B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

Password: infected

3ef59967e8fda470ece13de424bf52cc

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

Sections

.text Size: 180KB - Virtual size: 179KB

.rdata Size: 75KB - Virtual size: 75KB

.data Size: 5KB - Virtual size: 10KB

.pdata Size: 9KB - Virtual size: 9KB

_RDATA Size: 512B - Virtual size: 348B

.reloc Size: 2KB - Virtual size: 2KB

.text
Size: 180KB - Virtual size: 179KB

.rdata
Size: 75KB - Virtual size: 75KB

.data
Size: 5KB - Virtual size: 10KB

.pdata
Size: 9KB - Virtual size: 9KB

_RDATA
Size: 512B - Virtual size: 348B

.reloc
Size: 2KB - Virtual size: 2KB