SCHTASK[.]exe | Triage

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General

Target

SCHTASK.exe
Size

64KB
MD5

4c7115eb8526cc270e1aeaad5cba3cd4
SHA1

ead29dfd3a10cff38020e4fc8e28dc4a45b11586
SHA256

0c075863062077754316d25b34dbe33538eed029df359724b7535048ce474310
SHA512

f261fd38ca88af68da00a32aae90df6bed94f03862ad4f5740e9a0e7fec423dc0d633aa3d7d6d93a83d6c58607f107f18410cc27ad3730f482fa0c680af92c85
SSDEEP

1536:5sMCwZbU0/n0d+WBEwHTtrJYfU3yoxjOyaLc:aMLHn0dXBZHTtrJY839JOVLc

Score

1^/10

Malware Config

Signatures

Files

SCHTASK.exe
.exe windows x86

f4a22a2af0a3b7c325ec1f383be3f824

Code Sign

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3b
Certificate

Issuer

CN=Thawte Timestamping CA,OU=Thawte Certification,O=Thawte,L=Durbanville,ST=Western Cape,C=ZA

Not Before

21/12/2012, 00:00

Not After

30/12/2020, 23:59

Subject

CN=Symantec Time Stamping Services CA - G2,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50
Certificate

Issuer

CN=Symantec Time Stamping Services CA - G2,O=Symantec Corporation,C=US

Not Before

18/10/2012, 00:00

Not After

29/12/2020, 23:59

Subject

CN=Symantec Time Stamping Services Signer - G4,O=Symantec Corporation,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature

26:ef:5b:57:f7:b9:78:af:84:b5:7f:05:65:e4:c1:0b
Certificate

Issuer

CN=VeriSign Class 3 Code Signing 2010 CA,OU=VeriSign Trust Network+OU=Terms of use at https://www.verisign.com/rpa (c)10,O=VeriSign\, Inc.,C=US

Not Before

18/05/2012, 00:00

Not After

17/07/2015, 23:59

Subject

CN=Lenovo Information Products (Shenzhen) Co.\,Ltd,OU=Digital ID Class 3 - Microsoft Software Validation v2,O=Lenovo Information Products (Shenzhen) Co.\,Ltd,L=Shenzhen,ST=Guangdong,C=CN

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

52:00:e5:aa:25:56:fc:1a:86:ed:96:c9:d4:4b:33:c7
Certificate

Issuer

CN=VeriSign Class 3 Public Primary Certification Authority - G5,OU=VeriSign Trust Network+OU=(c) 2006 VeriSign\, Inc. - For authorized use only,O=VeriSign\, Inc.,C=US

Not Before

08/02/2010, 00:00

Not After

07/02/2020, 23:59

Subject

CN=VeriSign Class 3 Code Signing 2010 CA,OU=VeriSign Trust Network+OU=Terms of use at https://www.verisign.com/rpa (c)10,O=VeriSign\, Inc.,C=US

Extended Key Usages

ExtKeyUsageClientAuth
ExtKeyUsageCodeSigning

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

23:02:23:f2:de:7c:bc:05:17:57:92:70:9c:c6:9a:65:61:4e:a1:f3
Signer

Actual PE Digest

23:02:23:f2:de:7c:bc:05:17:57:92:70:9c:c6:9a:65:61:4e:a1:f3

Digest Algorithm

sha1

PE Digest Matches

true

Signature Validations

Trusted

false

Verification

Signing Certificate

CN=Lenovo Information Products (Shenzhen) Co.\,Ltd,OU=Digital ID Class 3 - Microsoft Software Validation v2,O=Lenovo Information Products (Shenzhen) Co.\,Ltd,L=Shenzhen,ST=Guangdong,C=CN

09/04/2013, 07:37
Valid: false

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

msvcr90

_invoke_watson
_except_handler4_common
?_type_info_dtor_internal_method@type_info@@QAEXXZ
?terminate@@YAXXZ
_crt_debugger_hook
__set_app_type
__p__fmode
__p__commode
_adjust_fdiv
__setusermatherr
_configthreadlocale
_initterm_e
_initterm
_wcmdln
exit
_XcptFilter
??3@YAXPAX@Z
_exit
_cexit
__wgetmainargs
_amsg_exit
_decode_pointer
_onexit
_lock
_encode_pointer
__dllonexit
_unlock
_wtol
memset
wcsftime
vswprintf_s
_vscwprintf
_CxxThrowException
wcsnlen
_time64
_mktime64
_localtime64_s
calloc
memcpy_s
memmove_s
iswspace
wcsrchr
wcschr
_wcsicmp
wcscmp
wcslen
free
_controlfp_s
__CxxFrameHandler3

kernel32

HeapDestroy
HeapAlloc
HeapFree
HeapReAlloc
HeapSize
GetProcessHeap
RaiseException
EnterCriticalSection
LeaveCriticalSection
InitializeCriticalSection
DeleteCriticalSection
GetSystemTimeAsFileTime
GetCurrentProcessId
GetCurrentThreadId
QueryPerformanceCounter
IsDebuggerPresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetCurrentProcess
TerminateProcess
GetStartupInfoW
InterlockedCompareExchange
InterlockedExchange
GetUserDefaultUILanguage
WaitForSingleObject
OutputDebugStringW
SetCurrentDirectoryW
GetModuleFileNameW
GetPrivateProfileStringA
WideCharToMultiByte
GetPrivateProfileIntW
FindClose
FindNextFileW
DeleteFileW
FindFirstFileW
CreateDirectoryW
MultiByteToWideChar
GetLastError
CreateMutexW
GetTickCount
GetLocalTime
Sleep
GlobalFree
SizeofResource
LockResource
LoadResource
FindResourceW
FindResourceExW
CloseHandle
GetExitCodeProcess

user32

ShowWindow
KillTimer
SetTimer
FindWindowW
RegisterHotKey
UnregisterHotKey
SendMessageW
PostMessageW
GetMessageW
DefWindowProcW
PostQuitMessage
CreateWindowExW
RegisterClassExW
LoadCursorW
DispatchMessageW
TranslateMessage

advapi32

RegQueryValueExW
RegCloseKey
RegOpenKeyExW

shell32

CommandLineToArgvW
ShellExecuteExW
SHGetFolderPathW
ShellExecuteW

ole32

CoUninitialize
CoCreateInstance
CoInitialize

oleaut32

VariantInit
SysAllocString
SysFreeString
VariantChangeType

shlwapi

StrToIntW
PathAppendW

wtsapi32

WTSUnRegisterSessionNotification
WTSRegisterSessionNotification

Sections

.text
Size: 42KB - Virtual size: 42KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 12KB - Virtual size: 11KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 512B - Virtual size: 1KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 2KB - Virtual size: 2KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

f4a22a2af0a3b7c325ec1f383be3f824

Code Sign

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3bCertificate

Extended Key Usages

Key Usages

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50Certificate

Extended Key Usages

Key Usages

26:ef:5b:57:f7:b9:78:af:84:b5:7f:05:65:e4:c1:0bCertificate

Extended Key Usages

Key Usages

52:00:e5:aa:25:56:fc:1a:86:ed:96:c9:d4:4b:33:c7Certificate

Extended Key Usages

Key Usages

23:02:23:f2:de:7c:bc:05:17:57:92:70:9c:c6:9a:65:61:4e:a1:f3Signer

Signature Validations

Verification

09/04/2013, 07:37 Valid: false

Headers

DLL Characteristics

File Characteristics

Imports

msvcr90

kernel32

user32

advapi32

shell32

ole32

oleaut32

shlwapi

wtsapi32

Sections

.text Size: 42KB - Virtual size: 42KB

.rdata Size: 12KB - Virtual size: 11KB

.data Size: 512B - Virtual size: 1KB

.rsrc Size: 2KB - Virtual size: 2KB

7e:93:eb:fb:7c:c6:4e:59:ea:4b:9a:77:d4:06:fc:3b
Certificate

0e:cf:f4:38:c8:fe:bf:35:6e:04:d8:6a:98:1b:1a:50
Certificate

26:ef:5b:57:f7:b9:78:af:84:b5:7f:05:65:e4:c1:0b
Certificate

52:00:e5:aa:25:56:fc:1a:86:ed:96:c9:d4:4b:33:c7
Certificate

23:02:23:f2:de:7c:bc:05:17:57:92:70:9c:c6:9a:65:61:4e:a1:f3
Signer

09/04/2013, 07:37
Valid: false

.text
Size: 42KB - Virtual size: 42KB

.rdata
Size: 12KB - Virtual size: 11KB

.data
Size: 512B - Virtual size: 1KB

.rsrc
Size: 2KB - Virtual size: 2KB