changepk[.]exe

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General

Target

changepk.exe
Size

117KB
MD5

5511cc32461d52996a6d99cb0310b1d1
SHA1

1a1786f0c6c49989786b8bf6aedf633ed191eb77
SHA256

acb9a0da05513133b0a68ad2dad944021da48d4c4a5b7b02da82e16f864d6b26
SHA512

b4766947f4ac367ddd0ca9ca5574e1501d547f8efd6c8aa48fa8a1b99640f959be019f26138aa2e355545e861a3264b5240ee9c684a121c196f78a4d6f1655bd
SSDEEP

1536:Yo7kpR93j/CySURT6jNelDOsNO6TEvzj07j5Uf4HAPG:YppG1URTeu6sNO2kK5Uf4HAO

Score

1^/10

Malware Config

Signatures

Files

changepk.exe
.exe windows:10 windows x64 arch:x64

92e1d19df58a53ffb6a0a1367a0e0918

Code Sign

33:00:00:02:ed:2c:45:e4:c1:45:cf:48:44:00:00:00:00:02:ed
Certificate

Issuer

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

15/12/2020, 21:29

Not After

02/12/2021, 21:29

Subject

CN=Microsoft Windows,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageCodeSigning

61:07:76:56:00:00:00:00:00:08
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2010,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

19/10/2011, 18:41

Not After

19/10/2026, 18:51

Subject

CN=Microsoft Windows Production PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

cb:65:d3:d9:1c:ed:01:c4:4a:6d:fc:f2:5f:0e:cf:5a:11:d8:d5:de:8d:d3:a2:c8:62:f4:62:eb:9d:3c:ea:c4
Signer

Actual PE Digest

cb:65:d3:d9:1c:ed:01:c4:4a:6d:fc:f2:5f:0e:cf:5a:11:d8:d5:de:8d:d3:a2:c8:62:f4:62:eb:9d:3c:ea:c4

Digest Algorithm

sha256

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
IMAGE_DLLCHARACTERISTICS_FORCE_INTEGRITY
IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_GUARD_CF
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LARGE_ADDRESS_AWARE

PDB Paths

changepk.pdb

Imports

advapi32

EventSetInformation
EventRegister
EventUnregister
RegCloseKey
RegDeleteValueW
RegSetValueExW
RegOpenKeyExW
RegQueryValueExW
RegCreateKeyExW
EventWriteTransfer
EventActivityIdControl

kernel32

GetModuleFileNameA
CreateSemaphoreExW
HeapFree
SetLastError
ReleaseSemaphore
GetModuleHandleExW
WaitForSingleObject
GetCurrentThreadId
ReleaseMutex
FormatMessageW
GetLastError
OutputDebugStringW
WaitForSingleObjectEx
OpenSemaphoreW
CloseHandle
HeapAlloc
GetProcAddress
CreateMutexExW
GetCurrentProcessId
GetProcessHeap
GetModuleHandleW
DebugBreak
IsDebuggerPresent
CompareStringW
LocalFree

api-ms-win-crt-runtime-l1-1-0

_initterm_e
_initterm
_c_exit
_register_thread_local_exe_atexit_callback

api-ms-win-crt-private-l1-1-0

_o___p__commode
_o___stdio_common_vswprintf
_o__cexit
_o__configthreadlocale
_o__configure_wide_argv
_o__crt_atexit
_o__errno
_o__exit
_o__get_wide_winmain_command_line
_o__initialize_onexit_table
_o__initialize_wide_environment
_o__invalid_parameter_noinfo
_o__register_onexit_function
_o__seh_filter_exe
_o__set_app_type
_o__set_fmode
_o__set_new_mode
_o_exit
_o_terminate
__C_specific_handler
__current_exception
__current_exception_context
memcpy

api-ms-win-crt-string-l1-1-0

memset

api-ms-win-core-winrt-l1-1-0

RoInitialize
RoUninitialize

api-ms-win-shcore-obsolete-l1-1-0

CommandLineToArgvW

api-ms-win-core-com-l1-1-0

CoCreateInstance

api-ms-win-core-rtlsupport-l1-1-0

RtlVirtualUnwind
RtlCaptureContext
RtlLookupFunctionEntry

api-ms-win-core-errorhandling-l1-1-0

UnhandledExceptionFilter
SetUnhandledExceptionFilter

api-ms-win-core-processthreads-l1-1-0

TerminateProcess
GetCurrentProcess
GetStartupInfoW

api-ms-win-core-processthreads-l1-1-1

IsProcessorFeaturePresent

api-ms-win-core-profile-l1-1-0

QueryPerformanceCounter

api-ms-win-core-sysinfo-l1-1-0

GetSystemTimeAsFileTime

api-ms-win-core-interlocked-l1-1-0

InitializeSListHead

Sections

.text
Size: 24KB - Virtual size: 22KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.imrsiv
Size: - Virtual size: 4B

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rdata
Size: 8KB - Virtual size: 7KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

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

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 4KB - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.rsrc
Size: 60KB - Virtual size: 59KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 76B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

92e1d19df58a53ffb6a0a1367a0e0918

Code Sign

33:00:00:02:ed:2c:45:e4:c1:45:cf:48:44:00:00:00:00:02:edCertificate

Extended Key Usages

61:07:76:56:00:00:00:00:00:08Certificate

Key Usages

cb:65:d3:d9:1c:ed:01:c4:4a:6d:fc:f2:5f:0e:cf:5a:11:d8:d5:de:8d:d3:a2:c8:62:f4:62:eb:9d:3c:ea:c4Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

advapi32

kernel32

api-ms-win-crt-runtime-l1-1-0

api-ms-win-crt-private-l1-1-0

api-ms-win-crt-string-l1-1-0

api-ms-win-core-winrt-l1-1-0

api-ms-win-shcore-obsolete-l1-1-0

api-ms-win-core-com-l1-1-0

api-ms-win-core-rtlsupport-l1-1-0

api-ms-win-core-errorhandling-l1-1-0

api-ms-win-core-processthreads-l1-1-0

api-ms-win-core-processthreads-l1-1-1

api-ms-win-core-profile-l1-1-0

api-ms-win-core-sysinfo-l1-1-0

api-ms-win-core-interlocked-l1-1-0

Sections

.text Size: 24KB - Virtual size: 22KB

.imrsiv Size: - Virtual size: 4B

.rdata Size: 8KB - Virtual size: 7KB

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

.pdata Size: 4KB - Virtual size: 1KB

.rsrc Size: 60KB - Virtual size: 59KB

.reloc Size: 4KB - Virtual size: 76B

33:00:00:02:ed:2c:45:e4:c1:45:cf:48:44:00:00:00:00:02:ed
Certificate

61:07:76:56:00:00:00:00:00:08
Certificate

cb:65:d3:d9:1c:ed:01:c4:4a:6d:fc:f2:5f:0e:cf:5a:11:d8:d5:de:8d:d3:a2:c8:62:f4:62:eb:9d:3c:ea:c4
Signer

.text
Size: 24KB - Virtual size: 22KB

.imrsiv
Size: - Virtual size: 4B

.rdata
Size: 8KB - Virtual size: 7KB

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

.pdata
Size: 4KB - Virtual size: 1KB

.rsrc
Size: 60KB - Virtual size: 59KB

.reloc
Size: 4KB - Virtual size: 76B