changepk[.]exe

Sharing

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General

Target

changepk.exe
Size

99KB
MD5

712c2f1e1a8ac13e7db69b2253294484
SHA1

38f033d14efd15dcba2387656b3099141b6e8261
SHA256

0d07ec1eb0ff9dcabe175c93e5f354484ff2ba1ff5acce13ed3872a31e7fe22a
SHA512

8d24b801147e4e159158c0f1e0ff1f716784e1957800734db906e417efcb5969134d430964305f392b389312704370405432962fc4ce822359209e5eb6d32fdd
SSDEEP

1536:0NQZep+vv1Tj9aZ1q5TOvzj07j5Uff3vpP:Pv1Tj9aZ18yK5Uff3B

Score

1^/10

Malware Config

Signatures

Files

changepk.exe
.exe windows x64

ee22ad7ac89e2e7eacbaf51750a69c27

Code Sign

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4
Certificate

Issuer

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

Not Before

03/07/2018, 20:45

Not After

26/07/2019, 20:45

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

4a:c7:15:df:23:3a:ce:e5:96:5d:f6:b3:1e:87:50:d8:b7:20:4a:8b:93:a1:a0:82:07:f8:51:96:f9:c0:de:a3
Signer

Actual PE Digest

4a:c7:15:df:23:3a:ce:e5:96:5d:f6:b3:1e:87:50:d8:b7:20:4a:8b:93:a1:a0:82:07:f8:51:96:f9:c0:de:a3

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

Imports

advapi32

EventSetInformation
EventRegister
EventWriteTransfer
EventUnregister
RegCloseKey
RegDeleteValueW
RegOpenKeyExW
RegQueryValueExW
RegSetValueExW
RegCreateKeyExW
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
_initterm_e
_c_exit
_register_thread_local_exe_atexit_callback

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

memset

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
memcpy

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

RtlCaptureContext
RtlLookupFunctionEntry
RtlVirtualUnwind

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

UnhandledExceptionFilter
SetUnhandledExceptionFilter

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

GetStartupInfoW
GetCurrentProcess
TerminateProcess

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: 19KB - Virtual size: 18KB

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: 512B - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.pdata
Size: 1KB - 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: 512B - Virtual size: 60B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

ee22ad7ac89e2e7eacbaf51750a69c27

Code Sign

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4Certificate

Extended Key Usages

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

Key Usages

4a:c7:15:df:23:3a:ce:e5:96:5d:f6:b3:1e:87:50:d8:b7:20:4a:8b:93:a1:a0:82:07:f8:51:96:f9:c0:de:a3Signer

Headers

DLL Characteristics

File Characteristics

Imports

advapi32

kernel32

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

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

api-ms-win-crt-private-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: 19KB - Virtual size: 18KB

.imrsiv Size: - Virtual size: 4B

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

.data Size: 512B - Virtual size: 2KB

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

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

.reloc Size: 512B - Virtual size: 60B

33:00:00:01:c4:22:b2:f7:9b:79:3d:ac:b2:00:00:00:00:01:c4
Certificate

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

4a:c7:15:df:23:3a:ce:e5:96:5d:f6:b3:1e:87:50:d8:b7:20:4a:8b:93:a1:a0:82:07:f8:51:96:f9:c0:de:a3
Signer

.text
Size: 19KB - Virtual size: 18KB

.imrsiv
Size: - Virtual size: 4B

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

.data
Size: 512B - Virtual size: 2KB

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

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

.reloc
Size: 512B - Virtual size: 60B