f37b0d4e7b3240f4df9ab5ee23f777a15bbe8b28a848d7fdd406bff8aacb1831

Sharing

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General

Target

f37b0d4e7b3240f4df9ab5ee23f777a15bbe8b28a848d7fdd406bff8aacb1831
Size

254KB
MD5

584324e2a980959572791599cb7b80fb
SHA1

c462ae5521fa8b08b9093a3ee4777852f5f1fd0f
SHA256

f37b0d4e7b3240f4df9ab5ee23f777a15bbe8b28a848d7fdd406bff8aacb1831
SHA512

b7320b65511638168914cf3616cc7dd5f8bf21d9c166777b58097d6e72cbf3d6091e6b2240231d8c7ddef99d9fbf970bb0d59fdf97ba52e73536323f2c0dc48c
SSDEEP

6144:vOPj19M/zDsqpFgZ9RgreUGhDBc1lDrGwT2R0FkMkqGkHH:I59MLo2qfCretN61RrGyT5LHH

Score

3^/10

Malware Config

Signatures

Unsigned PE 1 IoCs

Checks for missing Authenticode signature.

resource
unpack001/OSFMount.exe

NSIS installer 2 IoCs

installer

resource	yara_rule
sample	nsis_installer_1
sample	nsis_installer_2

Files

f37b0d4e7b3240f4df9ab5ee23f777a15bbe8b28a848d7fdd406bff8aacb1831
.exe windows:4 windows x86 arch:x86

099c0646ea7282d232219f8807883be0

Code Sign

6f:43:48:e1:ea:6d:1b:50:b5:05:df:b2:8c:14:f5:fc
Certificate

Issuer

CN=Root Agency

Not Before

08/03/2011, 02:33

Not After

31/12/2039, 23:59

Subject

CN=KaFan,OU=WWW.CeleWare.NET,O=CeleWare.NET,1.2.840.113549.1.9.1=#130c6262732e6b6166616e2e636e

Signer

Actual PE Digest

Digest Algorithm

PE Digest Matches

false

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

Imports

kernel32

CompareFileTime
SearchPathA
GetShortPathNameA
GetFullPathNameA
MoveFileA
SetCurrentDirectoryA
GetFileAttributesA
GetLastError
CreateDirectoryA
SetFileAttributesA
Sleep
GetTickCount
CreateFileA
GetFileSize
GetModuleFileNameA
GetCurrentProcess
CopyFileA
ExitProcess
SetFileTime
GetTempPathA
GetCommandLineA
SetErrorMode
LoadLibraryA
lstrcpynA
GetDiskFreeSpaceA
GlobalUnlock
GlobalLock
CreateThread
CreateProcessA
RemoveDirectoryA
GetTempFileNameA
lstrlenA
lstrcatA
GetSystemDirectoryA
GetVersion
CloseHandle
lstrcmpiA
lstrcmpA
ExpandEnvironmentStringsA
GlobalFree
GlobalAlloc
WaitForSingleObject
GetExitCodeProcess
GetModuleHandleA
LoadLibraryExA
GetProcAddress
FreeLibrary
MultiByteToWideChar
WritePrivateProfileStringA
GetPrivateProfileStringA
WriteFile
ReadFile
MulDiv
SetFilePointer
FindClose
FindNextFileA
FindFirstFileA
DeleteFileA
GetWindowsDirectoryA

user32

EndDialog
ScreenToClient
GetWindowRect
EnableMenuItem
GetSystemMenu
SetClassLongA
IsWindowEnabled
SetWindowPos
GetSysColor
GetWindowLongA
SetCursor
LoadCursorA
CheckDlgButton
GetMessagePos
LoadBitmapA
CallWindowProcA
IsWindowVisible
CloseClipboard
SetClipboardData
EmptyClipboard
RegisterClassA
TrackPopupMenu
AppendMenuA
CreatePopupMenu
GetSystemMetrics
SetDlgItemTextA
GetDlgItemTextA
MessageBoxIndirectA
CharPrevA
DispatchMessageA
PeekMessageA
DestroyWindow
CreateDialogParamA
SetTimer
SetWindowTextA
PostQuitMessage
SetForegroundWindow
wsprintfA
SendMessageTimeoutA
FindWindowExA
SystemParametersInfoA
CreateWindowExA
GetClassInfoA
DialogBoxParamA
CharNextA
OpenClipboard
ExitWindowsEx
IsWindow
GetDlgItem
SetWindowLongA
LoadImageA
GetDC
EnableWindow
InvalidateRect
SendMessageA
DefWindowProcA
BeginPaint
GetClientRect
FillRect
DrawTextA
EndPaint
ShowWindow

gdi32

SetBkColor
GetDeviceCaps
DeleteObject
CreateBrushIndirect
CreateFontIndirectA
SetBkMode
SetTextColor
SelectObject

shell32

SHGetPathFromIDListA
SHBrowseForFolderA
SHGetFileInfoA
ShellExecuteA
SHFileOperationA
SHGetSpecialFolderLocation

advapi32

RegQueryValueExA
RegSetValueExA
RegEnumKeyA
RegEnumValueA
RegOpenKeyExA
RegDeleteKeyA
RegDeleteValueA
RegCloseKey
RegCreateKeyExA

comctl32

ImageList_AddMasked
ImageList_Destroy
ord17
ImageList_Create

ole32

CoTaskMemFree
OleInitialize
OleUninitialize
CoCreateInstance

version

GetFileVersionInfoSizeA
GetFileVersionInfoA
VerQueryValueA

Sections

.text
Size: 23KB - Virtual size: 23KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 1024B - Virtual size: 107KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.ndata
Size: - Virtual size: 36KB

IMAGE_SCN_CNT_UNINITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 23KB - Virtual size: 23KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
OSFMount.exe
.exe windows:5 windows x86 arch:x86

f0148f8399e9ef9c7105d46d35bf1657

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NX_COMPAT
IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE

File Characteristics

IMAGE_FILE_RELOCS_STRIPPED
IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

Imports

kernel32

CloseHandle
DeleteFileW
DeleteFileA
WideCharToMultiByte
GetVolumeInformationW
GetProcAddress
LoadLibraryW
QueryDosDeviceW
FreeLibrary
GetVersionExW
VirtualAlloc
ReadFile
WriteFile
VirtualFree
GetFileSize
SetFilePointer
SetEndOfFile
CreateFileW
FlushFileBuffers
GetDriveTypeW
SetEnvironmentVariableA
CompareStringW
HeapSize
LCMapStringW
GetCurrentDirectoryW
GetModuleHandleW
GetFullPathNameA
GetConsoleMode
GetConsoleCP
GetTimeZoneInformation
SetStdHandle
MultiByteToWideChar
GetCurrentProcessId
GetTickCount
QueryPerformanceCounter
SetHandleCount
GetEnvironmentStringsW
FreeEnvironmentStringsW
GetModuleFileNameA
DeleteCriticalSection
RtlUnwind
InitializeCriticalSectionAndSpinCount
GetStringTypeW
HeapCreate
IsProcessorFeaturePresent
GetCurrentProcess
TerminateProcess
IsDebuggerPresent
SetUnhandledExceptionFilter
UnhandledExceptionFilter
GetCurrentThreadId
TlsFree
TlsSetValue
TlsGetValue
TlsAlloc
EncodePointer
IsValidCodePage
GetOEMCP
GetModuleFileNameW
WaitNamedPipeW
Sleep
DefineDosDeviceW
GetLogicalDrives
DeviceIoControl
LocalFree
GetACP
InterlockedDecrement
SetLastError
GetLastError
FormatMessageW
CreateFileA
IsDBCSLeadByte
HeapFree
HeapAlloc
ExitThread
ResumeThread
CreateThread
ExitProcess
DecodePointer
GetCommandLineA
HeapSetInformation
GetStartupInfoW
WriteConsoleW
GetFileType
GetStdHandle
FileTimeToSystemTime
FileTimeToLocalFileTime
GetFileInformationByHandle
PeekNamedPipe
EnterCriticalSection
LeaveCriticalSection
GetFileAttributesA
HeapReAlloc
GetProcessHeap
FindFirstFileExA
FindNextFileA
FindClose
CreateDirectoryA
GetDriveTypeA
GetSystemTimeAsFileTime
GetCPInfo
InterlockedIncrement

advapi32

StartServiceW
CloseServiceHandle
OpenServiceW
OpenSCManagerW
CreateServiceW
ControlService
RegDeleteKeyW
DeleteService

user32

LoadCursorW
RegisterClassExW
SetClassLongW
GetMessageW
GetMenu
EnableMenuItem
DrawMenuBar
MapWindowPoints
GetSubMenu
TrackPopupMenu
PostQuitMessage
DefWindowProcW
GetDC
ReleaseDC
LoadIconW
CheckRadioButton
GetDlgItemInt
IsDlgButtonChecked
GetDlgItemTextW
GetWindowTextW
GetWindowTextLengthW
SetFocus
wsprintfW
DialogBoxParamW
CheckDlgButton
SetDlgItemInt
SendDlgItemMessageW
EnableWindow
CreateDialogParamW
SetDlgItemTextW
DestroyWindow
GetParent
SendMessageW
EndDialog
SetWindowTextW
SendMessageTimeoutW
MessageBoxW
GetPropW
ShowWindow
SetPropW
GetDlgItem
RemovePropW
PeekMessageW
DispatchMessageW
IsDialogMessageW
TranslateMessage

shell32

SHFormatDrive
ShellExecuteW

comctl32

ImageList_Create
ord17
ImageList_ReplaceIcon

comdlg32

GetOpenFileNameW
GetSaveFileNameW

mpr

WNetGetConnectionW

gdi32

DeleteObject
CreateFontW
GetDeviceCaps

ws2_32

ntohl
htonl

Sections

.text
Size: 181KB - Virtual size: 181KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 46KB - Virtual size: 46KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 6KB - Virtual size: 149KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 237KB - Virtual size: 240KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
OSFMount.sys
.sys windows:6 windows x86 arch:x86

97c44aa01a146e7126408e4c446e523c

Code Sign

38:25:d7:fa:f8:61:af:9e:f4:90:e7:26:b5:d6:5a:d5
Certificate

Issuer

CN=VeriSign Time Stamping Services CA,O=VeriSign\, Inc.,C=US

Not Before

15/06/2007, 00:00

Not After

14/06/2012, 23:59

Subject

CN=VeriSign Time Stamping Services Signer - G2,O=VeriSign\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageDigitalSignature
KeyUsageContentCommitment

47:bf:19:95:df:8d:52:46:43:f7:db:6d:48:0d:31:a4
Certificate

Issuer

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

Not Before

04/12/2003, 00:00

Not After

03/12/2013, 23:59

Subject

CN=VeriSign Time Stamping Services CA,O=VeriSign\, Inc.,C=US

Extended Key Usages

ExtKeyUsageTimeStamping

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

38:e7:fa:0d:b1:a3:98:f8:05:bb:85:a6:91:71:dc:9d
Certificate

Issuer

CN=VeriSign Class 3 Code Signing 2009-2 CA,OU=VeriSign Trust Network+OU=Terms of use at https://www.verisign.com/rpa (c)09,O=VeriSign\, Inc.,C=US

Not Before

22/09/2009, 00:00

Not After

18/10/2012, 23:59

Subject

CN=PassMark Software Pty Ltd,OU=Digital ID Class 3 - Microsoft Software Validation v2,O=PassMark Software Pty Ltd,ST=NSW,C=AU

Extended Key Usages

ExtKeyUsageCodeSigning

Key Usages

KeyUsageDigitalSignature

65:52:26:e1:b2:2e:18:e1:59:0f:29:85:ac:22:e7:5c
Certificate

Issuer

OU=Class 3 Public Primary Certification Authority,O=VeriSign\, Inc.,C=US

Not Before

21/05/2009, 00:00

Not After

20/05/2019, 23:59

Subject

CN=VeriSign Class 3 Code Signing 2009-2 CA,OU=VeriSign Trust Network+OU=Terms of use at https://www.verisign.com/rpa (c)09,O=VeriSign\, Inc.,C=US

Extended Key Usages

ExtKeyUsageClientAuth
ExtKeyUsageCodeSigning

Key Usages

KeyUsageCertSign
KeyUsageCRLSign

61:0c:12:06:00:00:00:00:00:1b
Certificate

Issuer

CN=Microsoft Code Verification Root,O=Microsoft Corporation,L=Redmond,ST=Washington,C=US

Not Before

23/05/2006, 17:01

Not After

23/05/2016, 17:11

Subject

OU=Class 3 Public Primary Certification Authority,O=VeriSign\, Inc.,C=US

Key Usages

KeyUsageDigitalSignature
KeyUsageCertSign
KeyUsageCRLSign

39:75:2d:22:66:fa:c2:c5:3a:b1:80:d3:d9:ca:65:51:f2:4c:1e:49
Signer

Actual PE Digest

39:75:2d:22:66:fa:c2:c5:3a:b1:80:d3:d9:ca:65:51:f2:4c:1e:49

Digest Algorithm

sha1

PE Digest Matches

true

Headers

DLL Characteristics

IMAGE_DLLCHARACTERISTICS_NO_SEH

File Characteristics

IMAGE_FILE_EXECUTABLE_IMAGE
IMAGE_FILE_32BIT_MACHINE

PDB Paths

c:\users\passmark02\desktop\osfmount\sys\i386\OSFMount.pdb

Imports

ntoskrnl.exe

_snwprintf
ExFreePool
ExAllocatePool
KeDelayExecutionThread
memset
IoCreateUnprotectedSymbolicLink
IoDeleteSymbolicLink
IofCompleteRequest
KeSetEvent
ExfInterlockedInsertTailList
MmLockPagableDataSection
ZwReadFile
memcpy
KeWaitForSingleObject
IofCallDriver
KeResetEvent
IoBuildSynchronousFsdRequest
KeInitializeEvent
ObfDereferenceObject
ZwWriteFile
ObReferenceObjectByHandle
IoFileObjectType
SeSinglePrivilegeCheck
_alldiv
ObReferenceObjectByPointer
IoDeleteDevice
IoCreateDevice
ZwOpenKey
RtlAppendUnicodeToString
RtlCopyUnicodeString
MmPageEntireDriver
KeGetCurrentThread
MmResetDriverPaging
ZwFreeVirtualMemory
RtlInitUnicodeString
ZwAllocateVirtualMemory
ZwSetInformationFile
RtlFreeAnsiString
RtlUnicodeStringToAnsiString
RtlInitAnsiString
ZwCreateFile
SeTokenType
SeImpersonateClient
SeCreateClientSecurity
_wcsnicmp
_allshr
_allmul
_allshl
ExfInterlockedRemoveHeadList
PsTerminateSystemThread
KeSetPriorityThread
ExAllocatePoolWithTag
ExFreePoolWithTag
RtlFreeUnicodeString
ZwOpenFile
RtlAnsiStringToUnicodeString
strncmp
ZwCreateDirectoryObject
RtlCopyString
DbgPrint
RtlCompareString
RtlUnicodeStringToInteger
vDbgPrintEx
isdigit
isspace
ZwQueryDirectoryFile
KeTickCount
ZwQueryValueKey
PsCreateSystemThread
ZwClose
ZwQueryInformationFile
MmMapLockedPages
_allrem
_aulldiv
atoi
_stricmp
rand
_strnicmp
sprintf
_snprintf
_aullshr
_aullrem
_aulldvrm
strrchr
_alldvrm
strstr
strncpy
strchr

hal

KeGetCurrentIrql

Sections

.text
Size: 82KB - Virtual size: 81KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

.rdata
Size: 14KB - Virtual size: 14KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ

.data
Size: 2KB - Virtual size: 193KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

PAGE
Size: 10KB - Virtual size: 9KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ

INIT
Size: 4KB - Virtual size: 4KB

IMAGE_SCN_CNT_CODE
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_EXECUTE
IMAGE_SCN_MEM_READ
IMAGE_SCN_MEM_WRITE

.rsrc
Size: 1024B - Virtual size: 824B

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

.reloc
Size: 4KB - Virtual size: 3KB

IMAGE_SCN_CNT_INITIALIZED_DATA
IMAGE_SCN_MEM_DISCARDABLE
IMAGE_SCN_MEM_READ

Sharing

General

Malware Config

Signatures

Files

099c0646ea7282d232219f8807883be0

Code Sign

6f:43:48:e1:ea:6d:1b:50:b5:05:df:b2:8c:14:f5:fcCertificate

Signer

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

user32

gdi32

shell32

advapi32

comctl32

ole32

version

Sections

.text Size: 23KB - Virtual size: 23KB

.rdata Size: 4KB - Virtual size: 4KB

.data Size: 1024B - Virtual size: 107KB

.ndata Size: - Virtual size: 36KB

.rsrc Size: 23KB - Virtual size: 23KB

f0148f8399e9ef9c7105d46d35bf1657

Headers

DLL Characteristics

File Characteristics

Imports

kernel32

advapi32

user32

shell32

comctl32

comdlg32

mpr

gdi32

ws2_32

Sections

.text Size: 181KB - Virtual size: 181KB

.rdata Size: 46KB - Virtual size: 46KB

.data Size: 6KB - Virtual size: 149KB

.rsrc Size: 237KB - Virtual size: 240KB

97c44aa01a146e7126408e4c446e523c

Code Sign

38:25:d7:fa:f8:61:af:9e:f4:90:e7:26:b5:d6:5a:d5Certificate

Extended Key Usages

Key Usages

47:bf:19:95:df:8d:52:46:43:f7:db:6d:48:0d:31:a4Certificate

Extended Key Usages

Key Usages

38:e7:fa:0d:b1:a3:98:f8:05:bb:85:a6:91:71:dc:9dCertificate

Extended Key Usages

Key Usages

65:52:26:e1:b2:2e:18:e1:59:0f:29:85:ac:22:e7:5cCertificate

Extended Key Usages

Key Usages

61:0c:12:06:00:00:00:00:00:1bCertificate

Key Usages

39:75:2d:22:66:fa:c2:c5:3a:b1:80:d3:d9:ca:65:51:f2:4c:1e:49Signer

Headers

DLL Characteristics

File Characteristics

PDB Paths

Imports

ntoskrnl.exe

hal

Sections

.text Size: 82KB - Virtual size: 81KB

.rdata Size: 14KB - Virtual size: 14KB

.data Size: 2KB - Virtual size: 193KB

PAGE Size: 10KB - Virtual size: 9KB

INIT Size: 4KB - Virtual size: 4KB

.rsrc Size: 1024B - Virtual size: 824B

.reloc Size: 4KB - Virtual size: 3KB

6f:43:48:e1:ea:6d:1b:50:b5:05:df:b2:8c:14:f5:fc
Certificate

.text
Size: 23KB - Virtual size: 23KB

.rdata
Size: 4KB - Virtual size: 4KB

.data
Size: 1024B - Virtual size: 107KB

.ndata
Size: - Virtual size: 36KB

.rsrc
Size: 23KB - Virtual size: 23KB

.text
Size: 181KB - Virtual size: 181KB

.rdata
Size: 46KB - Virtual size: 46KB

.data
Size: 6KB - Virtual size: 149KB

.rsrc
Size: 237KB - Virtual size: 240KB

38:25:d7:fa:f8:61:af:9e:f4:90:e7:26:b5:d6:5a:d5
Certificate

47:bf:19:95:df:8d:52:46:43:f7:db:6d:48:0d:31:a4
Certificate

38:e7:fa:0d:b1:a3:98:f8:05:bb:85:a6:91:71:dc:9d
Certificate

65:52:26:e1:b2:2e:18:e1:59:0f:29:85:ac:22:e7:5c
Certificate

61:0c:12:06:00:00:00:00:00:1b
Certificate

39:75:2d:22:66:fa:c2:c5:3a:b1:80:d3:d9:ca:65:51:f2:4c:1e:49
Signer

.text
Size: 82KB - Virtual size: 81KB

.rdata
Size: 14KB - Virtual size: 14KB

.data
Size: 2KB - Virtual size: 193KB

PAGE
Size: 10KB - Virtual size: 9KB

INIT
Size: 4KB - Virtual size: 4KB

.rsrc
Size: 1024B - Virtual size: 824B

.reloc
Size: 4KB - Virtual size: 3KB