Static task
static1
Behavioral task
behavioral1
Sample
cmstp.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
cmstp.exe
Resource
win10v2004-20230220-en
General
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Target
cmstp.exe
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Size
87KB
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MD5
b9fbbb796416eff8336b1a5f3dfeefea
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SHA1
f3f96e3c1098de6395c4d4d73032ece93ff6cedf
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SHA256
a384a7a96d0201908fe3e4921174ad0195aa414f7af8f5e2c3b95c37587345aa
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SHA512
d128b5af656d5867bea4683c3c17ec3c1fdb8a6ab246f87feea97c844d2096e768f0de0bf43b4fc94229da464ddea44e5f3359f6abd73117e1168ab0daa29be3
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SSDEEP
1536:bvsrU8tndfQcXseUKHfZpuuPeBCwBIrWa0b3S1cWmS8Dgj:bErU8tdfQcXsJ2bcVaIS1sS
Malware Config
Signatures
-
Unsigned PE 1 IoCs
Checks for missing Authenticode signature.
resource cmstp.exe
Files
-
cmstp.exe.exe windows x86
1bfcd0aad19887a1035bf48d79219292
Headers
DLL Characteristics
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_32BIT_MACHINE
Imports
advapi32
RegQueryValueExW
RegOpenKeyExW
RegCloseKey
OpenProcessToken
RegEnumKeyExW
RegDeleteKeyW
RegQueryInfoKeyW
RegDeleteValueW
RegCreateKeyW
FreeSid
RegSetValueExW
RegCreateKeyExW
AllocateAndInitializeSid
AdjustTokenPrivileges
InitiateSystemShutdownW
LookupPrivilegeValueW
RegEnumValueW
kernel32
FreeLibrary
LoadLibraryExW
FindFirstFileW
WritePrivateProfileStringW
CompareStringW
FindNextFileW
GetCurrentProcess
lstrlenW
GetPrivateProfileIntW
GetPrivateProfileSectionW
FindClose
CreateFileW
SetFileAttributesW
GetLastError
CloseHandle
GetCurrentProcessId
WritePrivateProfileSectionW
lstrcmpiW
lstrcmpW
ExpandEnvironmentStringsW
LoadLibraryExA
lstrlenA
GetSystemDirectoryW
GetModuleHandleA
GetWindowsDirectoryA
LocalFree
CopyFileW
CreateMutexW
WaitForSingleObject
ReleaseMutex
HeapAlloc
HeapFree
GetSystemInfo
GetVersionExW
SetCurrentDirectoryW
CreateDirectoryW
WideCharToMultiByte
LocalAlloc
GetTickCount
GetSystemTimeAsFileTime
GetCurrentThreadId
QueryPerformanceCounter
TerminateProcess
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetStartupInfoW
GetProcessHeap
Sleep
GetProcAddress
GetCurrentDirectoryW
GetPrivateProfileStringW
GetCommandLineW
GetModuleHandleW
GetWindowsDirectoryW
GetFileType
user32
GetDlgItemTextW
IsWindow
SetFocus
EndDialog
MessageBoxExW
CheckRadioButton
IsDlgButtonChecked
GetDlgItem
LoadStringW
CheckDlgButton
CharPrevW
DialogBoxParamW
CharNextW
MessageBoxW
SetWindowTextW
msvcrt
_amsg_exit
__p__commode
_XcptFilter
_vsnwprintf
_exit
__getmainargs
__set_app_type
_cexit
exit
_vsnprintf
_except_handler4_common
_controlfp
?terminate@@YAXXZ
_acmdln
_initterm
__setusermatherr
_ismbblead
__p__fmode
memset
cmutil
SzToWzWithAlloc
GetOSVersion
CmFree
WzToSzWithAlloc
CmRealloc
GetOSMajorVersion
CmMalloc
ole32
CoInitialize
CoUninitialize
shell32
ShellExecuteExW
SHGetMalloc
SHChangeNotify
SHFileOperationW
SHGetSpecialFolderLocation
SHGetPathFromIDListW
SHGetDesktopFolder
SHGetFolderPathW
version
VerQueryValueA
GetFileVersionInfoSizeA
GetFileVersionInfoA
Sections
.text Size: 74KB - Virtual size: 73KB
IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
.data Size: 512B - Virtual size: 2KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE
.idata Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.rsrc Size: 3KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
.reloc Size: 4KB - Virtual size: 3KB
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ