Backdoor.Turkojan.AF_c8a4cd3e3a – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Backdoor creates the following process(es):

%original file name%.exe:320

The Backdoor injects its code into the following process(es):

mstwain32.exe:1628
Explorer.EXE:1572

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:320 makes changes in the file system.

The Backdoor creates and/or writes to the following file(s):

%WinDir%\mstwain32.exe (601 bytes)

The process mstwain32.exe:1628 makes changes in the file system.

The Backdoor creates and/or writes to the following file(s):

%WinDir%\cmsetac.dll (33 bytes)
%WinDir%\ntdtcstp.dll (7 bytes)

Registry activity

The process %original file name%.exe:320 makes changes in the system registry.

The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C7 09 04 F5 EA 4D 62 72 9F 1E 1B 26 65 22 B8 D6"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%WinDir%]
"mstwain32.exe" = "mstwain32"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Backdoor modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Backdoor modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

The process mstwain32.exe:1628 makes changes in the system registry.

The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0F F5 CB 67 46 23 28 C5 D1 F0 17 62 F3 4F C1 50"

To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"mstwain32" = "%WinDir%\mstwain32.exe"

Dropped PE files

MD5	File path
22bb9fd837f17d990aef4f1a38f82b2a	c:\WINDOWS\cmsetac.dll
67587e25a971a141628d7f07bd40ffa0	c:\WINDOWS\ntdtcstp.dll

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

Remove it with Ad-Aware

Click (here) to download and install Ad-Aware Free Antivirus.
Update the definition files.
Run a full scan of your computer.

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:320
Delete the original Backdoor file.
Delete or disinfect the following files created/modified by the Backdoor:
%WinDir%\mstwain32.exe (601 bytes)
%WinDir%\cmsetac.dll (33 bytes)
%WinDir%\ntdtcstp.dll (7 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"mstwain32" = "%WinDir%\mstwain32.exe"
Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
UPX0	4096	208896	0	0	d41d8cd98f00b204e9800998ecf8427e
UPX1	212992	110592	108032	5.53958	953f4e212bd1f8e9797a6fb60ef104b2
.rsrc	323584	4096	1536	2.00561	e137ebb09303218ddc96f554a8217534

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 1
7cbb6274f098a6816a75f2208c57ffd6

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Backdoor connects to the servers at the folowing location(s):

Strings from Dumps

mstwain32.exe_1628:

`.rsrc

D:\turkojan4\completed\Server\Kol.pas

Unsupported bitmap format

1.2.3

PSAPI.dll

ntdtcstp.dll

cmsetac.dll

VMPipe32.dll

KB8888239.log

KB8888113.log

twmsico.dll

explorer.exe

\Uninstall.bat

Dsdvq%Dkqlslwpv

DSB%Dkqlslwpv

Dpqm`kqlph%Dkqlslwpv

HfDc``%SlwpvVfdk

Udkad%Dkqlslwpv*Clw`rdii

UF(fliilk%Dkqlslwpv

Kjwqjk%U`wvjkdi%Clw`rdii

Fjhjaj%Clw`rdii

`Qwpvq%@_%Clw`rdii

Ndvu`wvn|%Dkqlmdfn`w

HfDc``%U`wvjkdi%Clw`rdii

Kjwhdk%U`wvjkdi%Clw`rdii

Jpqujvq%U`wvjkdi%Clw`rdii

Udkad%Dkql(Slwpv*Clw`rdii

N`wlj%U`wvjkdi%Clw`rdii

Qlk|%U`wvjkdi%Clw`rdii

GlqA`c`ka`w%*%Gpii%Bpdwa%Dkqlslwpv

V|bdq`%U`wvjkdi%Clw`rdii

shell32.dll

user32.dll

%s\%s

@}uijw`wYVm`ii%Cjia`wv

kernel32.dll

Windows

v`qÃºdpalj%ajjw%ju`k

v`qÃºdpalj%ajjw%fijv`a

%dx%d, %d colors

Vqdwq%Udb`

%dx%d

00-00-00-00-00-00

127.0.0.1 localhost

127.0.0.1

getimpasswords

getftppasswords

explorerpasswords

mailpasswords

dialpasswords

downloaderpasswords

otherpasswords

HTTP/1.1

TClassClientSocketKey

taskmgr.exe

Creat-reg-key

KEYL1

KEYL2

deneme.exe

hXXp://VVV.turkojan.com

0123456789

scorpionoir.no-ip.biz

mstwain32.exe

File executed

Can't execute file

.idata

.edata

P.reloc

P.rsrc

GetProcessHeap

MapVirtualKeyExA

GetKeyboardState

GetKeyboardLayout

UnhookWindowsHookEx

SetWindowsHookExA

KBHook.dll

Ã½}d

l}io%fpvpbax$

&Dv`.|bp$v{wh%pmoq-|kp.rlkp%zj-fhj}`-vawx`

KWindows

untWebcam

HuntHttpDownload

Kernel32.dll

WinExec

SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

text/x-msmsgscontrol

wsock32.dll

ntdll.dll

advapi32.dll

msnmsgr.exe

msmsgs.exe

iexplore.exe

GetKeyboardType

RegOpenKeyExA

RegCloseKey

oleaut32.dll

GetWindowsDirectoryA

wsock32_hook.dll

mstwain32.exe"@

PeekNamedPipe

GetCPInfo

CreatePipe

RegQueryInfoKeyA

RegFlushKey

RegEnumKeyExA

RegDeleteKeyA

RegCreateKeyExA

ShellExecuteA

SHFileOperationA

keybd_event

UnregisterHotKey

RegisterHotKey

GetKeyState

ExitWindowsEx

EnumWindows

.rdata

KERNEL32.DLL

AVICAP32.dll

gdi32.dll

msacm32.dll

netapi32.dll

winmm.dll

mstwain32.exe_1628_rwx_00401000_0004C000:

D:\turkojan4\completed\Server\Kol.pas

Unsupported bitmap format

1.2.3

PSAPI.dll

ntdtcstp.dll

cmsetac.dll

VMPipe32.dll

KB8888239.log

KB8888113.log

twmsico.dll

explorer.exe

\Uninstall.bat

Dsdvq%Dkqlslwpv

DSB%Dkqlslwpv

Dpqm`kqlph%Dkqlslwpv

HfDc``%SlwpvVfdk

Udkad%Dkqlslwpv*Clw`rdii

UF(fliilk%Dkqlslwpv

Kjwqjk%U`wvjkdi%Clw`rdii

Fjhjaj%Clw`rdii

`Qwpvq%@_%Clw`rdii

Ndvu`wvn|%Dkqlmdfn`w

HfDc``%U`wvjkdi%Clw`rdii

Kjwhdk%U`wvjkdi%Clw`rdii

Jpqujvq%U`wvjkdi%Clw`rdii

Udkad%Dkql(Slwpv*Clw`rdii

N`wlj%U`wvjkdi%Clw`rdii

Qlk|%U`wvjkdi%Clw`rdii

GlqA`c`ka`w%*%Gpii%Bpdwa%Dkqlslwpv

V|bdq`%U`wvjkdi%Clw`rdii

shell32.dll

user32.dll

%s\%s

@}uijw`wYVm`ii%Cjia`wv

kernel32.dll

Windows

v`qÃºdpalj%ajjw%ju`k

v`qÃºdpalj%ajjw%fijv`a

%dx%d, %d colors

Vqdwq%Udb`

%dx%d

00-00-00-00-00-00

127.0.0.1 localhost

127.0.0.1

getimpasswords

getftppasswords

explorerpasswords

mailpasswords

dialpasswords

downloaderpasswords

otherpasswords

HTTP/1.1

TClassClientSocketKey

taskmgr.exe

Creat-reg-key

KEYL1

KEYL2

deneme.exe

hXXp://VVV.turkojan.com

0123456789

scorpionoir.no-ip.biz

mstwain32.exe

File executed

Can't execute file

.idata

.edata

P.reloc

P.rsrc

GetProcessHeap

MapVirtualKeyExA

GetKeyboardState

GetKeyboardLayout

UnhookWindowsHookEx

SetWindowsHookExA

KBHook.dll

Ã½}d

l}io%fpvpbax$

&Dv`.|bp$v{wh%pmoq-|kp.rlkp%zj-fhj}`-vawx`

KWindows

untWebcam

HuntHttpDownload

Kernel32.dll

WinExec

SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System

Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

text/x-msmsgscontrol

wsock32.dll

ntdll.dll

advapi32.dll

msnmsgr.exe

msmsgs.exe

iexplore.exe

GetKeyboardType

RegOpenKeyExA

RegCloseKey

oleaut32.dll

GetWindowsDirectoryA

wsock32_hook.dll

mstwain32.exe"@

PeekNamedPipe

GetCPInfo

CreatePipe

RegQueryInfoKeyA

RegFlushKey

RegEnumKeyExA

RegDeleteKeyA

RegCreateKeyExA

ShellExecuteA

SHFileOperationA

keybd_event

UnregisterHotKey

RegisterHotKey

GetKeyState

ExitWindowsEx

EnumWindows

.rdata

mstwain32.exe_1628_rwx_662B1000_00001000:

HKEY_CURRENT_CONFIG

HKEY_DYN_DATA

HKEY_PERFORMANCE_DATA

HKEY_USERS

HKEY_LOCAL_MACHINE

HKEY_CURRENT_USER

HKEY_CLASSES_ROOT

oleaut32.dll

Explorer.EXE_1572_rwx_00F00000_00001000:

%WinDir%\mstwain32.exe

Explorer.EXE_1572_rwx_014E1000_00001000:

gHgfsSharedMemoryData.sharedMem

gHgfsSharedMemoryData.mutex

d:\build\ob\bora-528969\bora-vmsoft\build\release\hgfs\dll\hgfssharedmem.c

HgfsProvider: Failed to check IsWow64, error %d

HgfsProvider: Failed to open or create the data directory (%d).

HgfsGetMappedFilePath: SetSecurityDescriptorOwner failed (%d)

HgfsGetMappedFilePath: SetSecurityDescriptorDacl failed (%d)

HgfsGetMappedFilePath: InitializeSecurityDescriptor failed (%d)

HgfsGetMappedFilePath: FindFirstFile failed (%d)

HgfsGetMappedFilePath: Application data path = %S

HgfsProvider: GetFolderPath returned %s.

HgfsProvider: ShGetFolderPath %S

HgfsProvider: ShGetFolderPath failed again(%x)

HgfsProvider: ShGetFolderPath failed(%x)

HgfsProvider: Load library failed %d.

Resource %s already exists for the user %#I64x

Section is too small: used size %d, alloc size %d, local name %S,remote name %S

Error %d adding resource: local name = %s, remote name = %s

Upgrade from V2: adding resource: local name = %s, remote name = %s

HgfsInitResourcesFromV2: sharedMem Version =% d size = %#x resources = %d

Shared memory INCONSISTENT: last resurce size %d > spaceLeft %d

Shared memory INCONSISTENT: nextEntryOffset %d > spaceLeft %d

Shared memory INCONSISTENT: used %d

Shared memory INCONSISTENT: used %d > allocated %d

HgfsOpenSharedMemory: return status: %d

HgfsOpenSharedMemory: ReleaseMutex failed(%d)

HgfsOpenSharedMemory: Older Version %d

HgfsOpenSharedMemory: Signature %S

HgfsOpenSharedMemory: CreateFileMapping failed(%d)

HgfsOpenSharedMemory: CreateFile succeeded(%d)

HgfsOpenSharedMemory: Mapped file name is: %S

HgfsOpenSharedMemory: CreateFile failed(%d)

HgfsOpenSharedMemory: MapViewOfFile failed(%d)

HgfsOpenSharedMemory: File Mapping %S (%d)

Hgfs network provider versioning supported

%s\%s

shfolder.dll

hgfs.dat

Explorer.EXE_1572_rwx_5AD71000_00001000:

UxTheme.dll

Explorer.EXE_1572_rwx_5BA61000_00001000:

display.hlp

Microsoft\Windows\Themes\Custom.theme

%s\%s

visualstyle.css

Explorer.EXE_1572_rwx_68001000_00001000:

EExport

SExport

PSKEYS

WNetGetCachedPassword

WNetCachePassword

MPR.DLL

hSoftware\Microsoft\Cryptography\DESHashSessionKeyBackward

DefaultKeys

rsaenh.dll

RSA Full (Signature and Key Exchange)

key expansion

client write key

server write key

ole32.dll

Explorer.EXE_1572_rwx_6F881000_00001000:

TerminateExe

RemoveInvalidW2KWindowStyles

RemoveDDEFlagFromShellExecuteEx

RedirectWindowsDirToSystem32

RedirectEXE

RecopyExeFromCD

PropagateProcessHistory

IgnoreCRTExit

ForceWorkingDirectoryToEXEPath

ForceWindowsFirewallUI

DisableStickyKeys

DisableFilterKeys

DeRandomizeExeName

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps