Static task
static1
Behavioral task
behavioral1
Sample
chgusr.exe
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
chgusr.exe
Resource
win10v2004-20230703-en
General
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Target
chgusr.exe
-
Size
21KB
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MD5
8daf58e7e05f72467de0fafded21ba1a
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SHA1
4fdad69a0deaaa7e223e9329f7c6beba5e5f6721
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SHA256
4da3797b3aab0bdc53a2b923c43a84e16269c4683a556fae0f491b827baee1c8
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SHA512
6a175aed80e18ad9f847f0d3e9d8a956b1cec273521a0ae6408fbd8567f6ad1d6efb98a545022be599372b495458fcef45d83f1f73e6e9292bfcbc1026d70e33
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SSDEEP
384:GX2Y08rYQ/8x7nVmEoz5XukK8vW5kLS43eYH2TwHKXTSWoVW:W08rYQ/G7n8AkK8u5klJIT8
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource chgusr.exe
Files
-
chgusr.exe.exe windows x64
ea17270b67fae16b05714fd14be68ea3
Headers
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE
Imports
kernel32
RegOpenKeyExW
RegQueryValueExW
RegCloseKey
SetLastError
GetCommandLineW
LocalAlloc
LocalFree
GetStdHandle
MultiByteToWideChar
FormatMessageW
LoadLibraryW
WriteConsoleW
GetModuleHandleW
FreeLibrary
SetTermsrvAppInstallMode
VerSetConditionMask
VerifyVersionInfoW
FindFirstFileW
FindNextFileW
FindClose
GetFileAttributesW
RtlLookupFunctionEntry
RtlCaptureContext
Sleep
UnhandledExceptionFilter
GetLastError
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
GetCurrentProcessId
QueryPerformanceCounter
TerminateProcess
GetCurrentProcess
SetUnhandledExceptionFilter
TermsrvAppInstallMode
SetThreadUILanguage
HeapSetInformation
GetConsoleOutputCP
GetFileType
RtlVirtualUnwind
user32
LoadStringW
ntdll
RtlFreeSid
RtlAllocateAndInitializeSid
advapi32
CheckTokenMembership
msvcrt
wcscpy_s
_ultoa
wcscat_s
vswprintf_s
wcschr
free
vfwprintf
fwprintf
malloc
wcstol
wcstoul
_wcsnicmp
_wcsdup
_wsetlocale
_XcptFilter
_amsg_exit
__getmainargs
__set_app_type
exit
_exit
_cexit
__setusermatherr
_initterm
__C_specific_handler
_fmode
_commode
?terminate@@YAXXZ
memmove
setlocale
swprintf_s
_wcslwr
__iob_func
memset
Sections
.text Size: 11KB - Virtual size: 10KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.rdata Size: 5KB - Virtual size: 5KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 6KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.pdata Size: 512B - Virtual size: 504B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 2KB - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 512B - Virtual size: 72B
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ