changepk[.]exe

Sharing

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General

Target

changepk.exe
Size

100KB
MD5

e1cf89fc48f0c246c7ffdac3727cffcb
SHA1

15c30a19d1661e5decf643be09ffa358ec83a6ca
SHA256

69644ab12ecc3a89bc2db5dc8198a506647d14f5b44745bced02eafac362e8cf
SHA512

f904c301c09937c8c7f246cffb3cb2792c61d3679b3ee60d8cd6b3d9d46eb0488692803e7dd3abaa113c1c808539f7491069249fddf1acce850a6e4fed771b01
SSDEEP

1536:17F+2BGymzag4U8AIvd1scT05vzj07j5UfE9AIP:ejyzg4U3Ivd1sU0lK5UfEqI

Score

1^/10

Malware Config

Signatures

Files

changepk.exe
.exe windows x64

e3efa1b5d57ba8d5b087542c1d3f58f7

Code Sign

33:00:00:02:32:41:fb:59:99:6d:cc:4d:ff:00:00:00:00:02:32
Certificate

Issuer

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

Not Before

02/05/2019, 21:24

Not After

02/05/2020, 21:24

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

1c:e9:e6:c4:81:1e:f1:16:0c:4c:0d:fe:d1:f7:61:9d:f0:b2:1d:05:4a:0d:fd:d2:45:b2:99:4b:56:70:37:26
Signer

Actual PE Digest

1c:e9:e6:c4:81:1e:f1:16:0c:4c:0d:fe:d1:f7:61:9d:f0:b2:1d:05:4a:0d:fd:d2:45:b2:99:4b:56:70:37:26

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
EventUnregister
RegCloseKey
RegDeleteValueW
RegOpenKeyExW
RegQueryValueExW
RegSetValueExW
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
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: 19KB - Virtual size: 19KB

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: 64B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

e3efa1b5d57ba8d5b087542c1d3f58f7

Code Sign

33:00:00:02:32:41:fb:59:99:6d:cc:4d:ff:00:00:00:00:02:32Certificate

Extended Key Usages

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

Key Usages

1c:e9:e6:c4:81:1e:f1:16:0c:4c:0d:fe:d1:f7:61:9d:f0:b2:1d:05:4a:0d:fd:d2:45:b2:99:4b:56:70:37:26Signer

Headers

DLL Characteristics

File Characteristics

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: 19KB - Virtual size: 19KB

.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: 64B

33:00:00:02:32:41:fb:59:99:6d:cc:4d:ff:00:00:00:00:02:32
Certificate

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

1c:e9:e6:c4:81:1e:f1:16:0c:4c:0d:fe:d1:f7:61:9d:f0:b2:1d:05:4a:0d:fd:d2:45:b2:99:4b:56:70:37:26
Signer

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

.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: 64B