RefreshWindowsTool[.]exe

Sharing

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General

Target

RefreshWindowsTool.exe
Size

367KB
MD5

eef49d58d4fecb3671c37280e5e57c74
SHA1

c5a610b940e5501b99d81a5d7e46da610e121d40
SHA256

cab1311e9f84302b7f04681bcd1f9bbac0f08792294b7c2951b26c96a3152582
SHA512

a554e7723632f88635a519223492ef3538719a010573fa0b1c806078f2cd5c26dca1e166c04a406b03e93a4dfb1f8f17f7f1b51385ed2a80c803cfb4d5a1ba4b
SSDEEP

6144:TDNAsdzhQXJQZC+luB+nBzynkTxW9WOvo7uK4B/RPdr6gpyci+VyEIs2:H6s3aQk+xnokg9WOvo6z/RRhX+

Score

1^/10

Malware Config

Signatures

Files

RefreshWindowsTool.exe
.exe windows:5 windows x86 arch:x86

a1f6f100bff4507a3332f3f0cdfc24f5

Code Sign

33:00:00:00:99:aa:c5:81:9f:8c:a2:7d:8a:00:00:00:00:00:99
Certificate

Issuer

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

30/03/2016, 19:21

Not After

30/06/2017, 19:21

Subject

CN=Microsoft Time-Stamp Service,OU=MOPR+OU=nCipher DSE ESN:98FD-C61E-E641,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0a
Certificate

Issuer

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

04/06/2015, 17:42

Not After

04/09/2016, 17:42

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:33:26:1a:00:00:00:00:00:31
Certificate

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Not Before

31/08/2010, 22:19

Not After

31/08/2020, 22:29

Subject

CN=Microsoft Code Signing PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

61:16:68:34:00:00:00:00:00:1c
Certificate

Issuer

CN=Microsoft Root Certificate Authority,0.9.2342.19200300.100.1.25=#13096d6963726f736f6674,0.9.2342.19200300.100.1.25=#1303636f6d

Not Before

03/04/2007, 12:53

Not After

03/04/2021, 13:03

Subject

CN=Microsoft Time-Stamp PCA,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

33:00:00:00:64:47:84:94:86:db:41:19:38:00:00:00:00:00:64
Certificate

Issuer

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

28/10/2015, 20:31

Not After

28/01/2017, 20:31

Subject

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

Extended Key Usages

ExtKeyUsageCodeSigning

61:0e:90:d2:00:00:00:00:00:03
Certificate

Issuer

CN=Microsoft Root Certificate Authority 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

08/07/2011, 20:59

Not After

08/07/2026, 21:09

Subject

CN=Microsoft Code Signing PCA 2011,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

4a:f4:c9:95:e6:26:49:2d:77:49:aa:e6:08:3d:53:26:b4:f5:54:12:e2:47:d3:71:ac:b8:67:01:a2:e9:41:9c
Signer

Actual PE Digest

4a:f4:c9:95:e6:26:49:2d:77:49:aa:e6:08:3d:53:26:b4:f5:54:12:e2:47:d3:71:ac:b8:67:01:a2:e9:41:9c

Digest Algorithm

sha256

PE Digest Matches

true

0e:13:4c:55:b6:09:25:6b:d3:b4:96:1a:90:04:1d:ec:85:c5:11:46
Signer

Actual PE Digest

0e:13:4c:55:b6:09:25:6b:d3:b4:96:1a:90:04:1d:ec:85:c5:11:46

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_LINE_NUMS_STRIPPED
IMAGE_FILE_LOCAL_SYMS_STRIPPED
IMAGE_FILE_32BIT_MACHINE
IMAGE_FILE_REMOVABLE_RUN_FROM_SWAP
IMAGE_FILE_NET_RUN_FROM_SWAP

PDB Paths

sfxcab.pdb

Imports

msvcrt

__setusermatherr
_initterm
__getmainargs
__initenv
exit
_cexit
_adjust_fdiv
_exit
_c_exit
strncpy
strstr
_strlwr
strrchr
_stricmp
__p__commode
__p__fmode
__set_app_type
_except_handler3
_controlfp
_XcptFilter
_snprintf
sprintf
strchr
_strnicmp
_vsnprintf

advapi32

InitializeAcl
AddAccessAllowedAce
SetSecurityDescriptorDacl
CryptAcquireContextA
CryptGenRandom
CryptReleaseContext
AllocateAndInitializeSid
OpenProcessToken
GetTokenInformation
GetLengthSid
InitiateSystemShutdownA
InitializeSecurityDescriptor

kernel32

CreateThread
GetFileSize
ExpandEnvironmentStringsA
CreateProcessA
GetExitCodeProcess
InitializeCriticalSectionAndSpinCount
LocalFileTimeToFileTime
SetFileTime
SetEndOfFile
CreateEventA
QueryDosDeviceA
GetDiskFreeSpaceA
GetSystemTime
QueryPerformanceCounter
GetCurrentThreadId
GetCurrentProcessId
GetSystemTimeAsFileTime
UnhandledExceptionFilter
SetUnhandledExceptionFilter
GetCurrentDirectoryA
GetProcessHeap
CopyFileA
SetFileAttributesA
DosDateTimeToFileTime
SetEvent
GetVersionExA
ReadFile
SetFilePointer
MoveFileExA
RemoveDirectoryA
GetLastError
CreateDirectoryA
GetTickCount
SetErrorMode
FreeLibrary
GetProcAddress
LoadLibraryA
GetSystemDirectoryA
CloseHandle
DeviceIoControl
CreateFileA
GetDriveTypeA
HeapFree
FormatMessageA
LeaveCriticalSection
DeleteFileA
EnterCriticalSection
TerminateProcess
WaitForMultipleObjects
CreateEventW
FindFirstFileA
Sleep
SetEnvironmentVariableA
GetEnvironmentVariableA
WideCharToMultiByte
HeapAlloc
SetLastError
WriteFile
MoveFileA
ExitProcess
DeleteCriticalSection
FlushFileBuffers
WaitForSingleObject
OpenEventA
GetCurrentProcess
GetFileAttributesA
GetCommandLineA
GetModuleFileNameA
FindClose
FindNextFileA
SystemTimeToFileTime

user32

SendDlgItemMessageA
SendMessageA
DialogBoxParamA
MessageBoxA
SetParent
EndDialog
LoadStringA
ShowWindow

ntdll

NtOpenProcessToken
NtAdjustPrivilegesToken
NtClose
NtShutdownSystem

comctl32

ord17

shell32

SHBrowseForFolderA
SHGetPathFromIDListA

Sections

.text
Size: 33KB - Virtual size: 33KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 68KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 49KB - Virtual size: 48KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

a1f6f100bff4507a3332f3f0cdfc24f5

Code Sign

33:00:00:00:99:aa:c5:81:9f:8c:a2:7d:8a:00:00:00:00:00:99Certificate

Extended Key Usages

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0aCertificate

Extended Key Usages

61:33:26:1a:00:00:00:00:00:31Certificate

Key Usages

61:16:68:34:00:00:00:00:00:1cCertificate

Extended Key Usages

Key Usages

33:00:00:00:64:47:84:94:86:db:41:19:38:00:00:00:00:00:64Certificate

Extended Key Usages

61:0e:90:d2:00:00:00:00:00:03Certificate

Key Usages

4a:f4:c9:95:e6:26:49:2d:77:49:aa:e6:08:3d:53:26:b4:f5:54:12:e2:47:d3:71:ac:b8:67:01:a2:e9:41:9cSigner

0e:13:4c:55:b6:09:25:6b:d3:b4:96:1a:90:04:1d:ec:85:c5:11:46Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

msvcrt

advapi32

kernel32

user32

ntdll

comctl32

shell32

Sections

.text Size: 33KB - Virtual size: 33KB

.data Size: 512B - Virtual size: 68KB

.rsrc Size: 49KB - Virtual size: 48KB

33:00:00:00:99:aa:c5:81:9f:8c:a2:7d:8a:00:00:00:00:00:99
Certificate

33:00:00:01:0a:2c:79:ae:d7:79:7b:a6:ac:00:01:00:00:01:0a
Certificate

61:33:26:1a:00:00:00:00:00:31
Certificate

61:16:68:34:00:00:00:00:00:1c
Certificate

33:00:00:00:64:47:84:94:86:db:41:19:38:00:00:00:00:00:64
Certificate

61:0e:90:d2:00:00:00:00:00:03
Certificate

4a:f4:c9:95:e6:26:49:2d:77:49:aa:e6:08:3d:53:26:b4:f5:54:12:e2:47:d3:71:ac:b8:67:01:a2:e9:41:9c
Signer

0e:13:4c:55:b6:09:25:6b:d3:b4:96:1a:90:04:1d:ec:85:c5:11:46
Signer

.text
Size: 33KB - Virtual size: 33KB

.data
Size: 512B - Virtual size: 68KB

.rsrc
Size: 49KB - Virtual size: 48KB