Static task
static1
Behavioral task
behavioral1
Sample
xzupdate.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
xzupdate.exe
Resource
win10v2004-20231023-en
General
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Target
xzupdate.exe
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Size
61KB
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MD5
f62b662f418fcaf2004dfa224ba441ea
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SHA1
507437e30004c4703902ffb0712ead9e4fa7ff80
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SHA256
c0103a838a6865460a3a5d5ee43c079e3f5e0b87d35a53611351056020eb1a73
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SHA512
6eb9ad4d6e9711e14fb8fff941870604792970990200e1a1a7866c4250851413f8475368fab22e828a9a3a7baff7bea907763e421b7c5938ede11b29a803d635
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SSDEEP
768:3kE2UEuNEK4pRD6NJ/IOt3LUELbI+IhwFlyl3DWIQgPtFOI8qcQaslmi:3kE2XnK4L68OiEPNIhpegFFO3slz
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource xzupdate.exe
Files
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xzupdate.exe.exe windows:1 windows x86 arch:x86
699035716eff0f4cbc45b97c4ff099a5
Headers
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_BYTES_REVERSED_LO
IMAGE_FILE_32BIT_MACHINE
Imports
user32
CharUpperBuffA
kernel32
CloseHandle
CreateEventA
CreateFileA
CreateThread
DeleteCriticalSection
EnterCriticalSection
ExitProcess
ExitThread
FreeEnvironmentStringsA
GetACP
GetCPInfo
GetCommandLineA
GetCommandLineW
GetCurrentThreadId
GetCurrentThread
GetEnvironmentStrings
GetFileType
GetLastError
GetModuleFileNameA
GetModuleFileNameW
GetModuleHandleA
GetOEMCP
GetProcAddress
GetStdHandle
GetVersion
InitializeCriticalSection
LeaveCriticalSection
LoadLibraryA
MultiByteToWideChar
SetConsoleCtrlHandler
SetEnvironmentVariableA
SetEnvironmentVariableW
SetEvent
SetLastError
SetStdHandle
SetUnhandledExceptionFilter
TlsAlloc
TlsFree
TlsGetValue
TlsSetValue
UnhandledExceptionFilter
VirtualAlloc
VirtualFree
VirtualQuery
WaitForSingleObject
WideCharToMultiByte
WriteFile
pbvm90
ord137
Sections
AUTO Size: 16KB - Virtual size:
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.idata Size: 1KB - Virtual size:
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
DGROUP Size: 3KB - Virtual size:
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.bss Size: 4KB - Virtual size:
IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.reloc Size: 1KB - Virtual size:
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ
.rsrc Size: 33KB - Virtual size:
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ