BKDR_KULUOZ.YZL

June 12, 2014

PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

OVERALL RISK RATING:

DAMAGE POTENTIAL:

DISTRIBUTION POTENTIAL:

REPORTED INFECTION:

Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes

OVERVIEW

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

TECHNICAL DETAILS

File Size:

176,128 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

19 May 2014

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This backdoor creates the following folders:

%User Temp%\Kukee
%User Profile%\Microsoft\Address Book
%User Temp%\RHRA438
%User Temp%\YBX7382

(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Autostart Technique

This backdoor adds the following registry entries to enable its automatic execution at every system startup:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Vaunys = "%User Temp%\Kukee\vaunys.exe "

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
dfjimiva = "%System%\dfjimiva.exe"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
dfjimiva = "%User Profile%\dfjimiva.exe"

Other System Modifications

This backdoor deletes the following files:

%User Temp%\gengo.exe

It adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4\Wab File Name

HKEY_LOCAL_MACHINE\Software\WinNTData

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Server ID = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Server ID = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Server ID = "2"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Server ID = "3"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager
Server ID = "4"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts
PreConfigVer = "4"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts
PreConfigVerNTDS = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
Account Name = "Active Directory"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Server = "NULL"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Search Return = "64"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Timeout = "3c"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Authentication = "2"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Simple Search = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Bind DN = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Port = "cc4"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Resolve Flag = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Secure Connection = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP User Name = "NULL"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Active Directory GC
LDAP Search Base = "NULL"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
Account Name = "Bigfoot Internet Directory Service"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Server = "ldap.bigfoot.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP URL = "http://www.{BLOCKED}t.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Search Return = "64"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Timeout = "3c"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Authentication = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Simple Search = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\Bigfoot
LDAP Logo = "%ProgramFiles%\Common Files\Services\bigfoot.bmp"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
Account Name = "VeriSign Internet Directory Service"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Server = "directory.verisign.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP URL = "http://www.{BLOCKED}gn.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Search Return = "64"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Timeout = "3c"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Authentication = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Search Base = "NULL"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Simple Search = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\VeriSign
LDAP Logo = "%ProgramFiles%\Common Files\Services\verisign.bmp"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
Account Name = "WhoWhere Internet Directory Service"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Server = "ldap.whowhere.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP URL = "http://www.{BLOCKED}re.com"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Search Return = "64"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Timeout = "3c"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Authentication = "0"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Simple Search = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager\Accounts\WhoWhere
LDAP Logo = "%ProgramFiles%\Common Files\Services\whowhere.bmp"

HKEY_CURRENT_USER\Software\Microsoft\
Internet Account Manager
Default LDAP Account = "Active Directory GC"

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4
OlkContactRefresh = "0"

HKEY_CURRENT_USER\Software\Microsoft\
WAB\WAB4
OlkFolderRefresh = "0"

HKEY_CURRENT_USER\Identities\{8A24C031-62FE-4BF5-94F0-BFD4FBCD674B}
Identity Ordinal = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
234jbadb = "b5qCjQ==?_CHAR(0x03)_?"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
27fg7j0h = "{random values}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
3044:UDP = "3044:UDP:*:Enabled:UDP 3044"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
1117:TCP = "1117:TCP:*:Enabled:TCP 1117"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
47g09ej = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
2e3gi9fe = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
2e3gi9fe = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
1ee5d9ea = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
ae099h = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HF_CHAR(0x03)_t_CHAR(0x10)_?B?Þ"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HFgG4chl5w3yCzlRCkmCuB+xw4neFmX4xp:_CHAR(0x11)_"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
ae099h = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
fih0hjb = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
234jbadb = "8d829a2e"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
7215:UDP = "7215:UDP:*:Enabled:UDP 7215"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
6249:TCP = "6249:TCP:*:Enabled:TCP 6249"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
1ee5d9ea = "{random values}"

HKEY_CURRENT_USER\Software\Microsoft\
Homagiuhpuob
234jbadb = "8d829a2f"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%User Temp%\RHRA438\/heap170id2.exe = "{random characters}"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion
VendorId = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\WinNTData
prx = "{random values}"

It modifies the following registry entries:

HKEY_CURRENT_USER\Identities
Identity Ordinal = "2"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
LogSessionName = "stdout"

(Note: The default value data of the said registry entry is {random values}.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
Active = "1"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi
ControlFlags = "1"

(Note: The default value data of the said registry entry is 1.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi\ImapiSvc
Guid = "8107d8e9-e323-49f5-bba2-abc35c243dca"

(Note: The default value data of the said registry entry is 8107d8e9-e323-49f5-bba2-abc35c243dca.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Tracing\
Microsoft\Imapi\ImapiSvc
BitNames = "{random characters}"

(Note: The default value data of the said registry entry is ImapiDebugError ImapiDebugWarning ImapiDebugTrace ImapiDebugInfo ImapiDebugX ImapiDebugSort.)

Dropping Routine

This backdoor drops the following files:

%User Temp%\senis.exe
gengo.exe
%User Temp%\Kukee\vaunys.exe
%User Profile%\Application Data\ovjuv.ara
%User Profile%\Address Book\Wilbert.wab
%System%\drivers\176d1.sys
%User Temp%\RHRA438\/heap170id2.exe
%User Temp%\ROH7E2C
%User Temp%\wcsA820.tmp
%User Temp%\aan2794.tmp
%User Temp%\wls2C3.tmp
%User Temp%\qkg10CB.tmp
%User Temp%\xli4FA1.tmp
%User Temp%\YBX7382\/b01.exe
%Temp%\5caaqdiv.TMP
%System%\dfjimiva.exe
%User Profile%\dfjimiva.exe

Other Details

This backdoor connects to the following possibly malicious URL:

http://{BLOCKED}idecpr.com/wp-content/uploads/2014/03/0805USmw.rar
http://{BLOCKED}idecpr.com/wp-content/uploads/2013/04/heap170id2.exe
http://{BLOCKED}idecpr.com/images/banners/b01.exe
{BLOCKED}.40.87
{BLOCKED}.23.10
{BLOCKED}.195.191
{BLOCKED}127.123
{BLOCKED}5.55.203
{BLOCKED}.173.34
{BLOCKED}.36.184

It deletes itself after execution.

This report is generated via an automated analysis system.

SOLUTION

Minimum Scan Engine:

9.300

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

In HKEY_CURRENT_USER\Software\Microsoft
- Homagiuhpuob

In HKEY_CURRENT_USER\Software\Microsoft
- Internet Account Manager

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager
- Accounts

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- Active Directory GC

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- Bigfoot

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- VeriSign

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- WhoWhere

In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
- Wab File Name

In HKEY_LOCAL_MACHINE\Software
- WinNTData

Step 4

Delete this registry value

[ Learn More ]

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- Vaunys = "%User Temp%\Kukee\vaunys.exe "

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
- dfjimiva = "%System%\dfjimiva.exe"

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- dfjimiva = "%User Profile%\dfjimiva.exe"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Server ID = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Server ID = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Server ID = "2"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Server ID = "3"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager
- Server ID = "4"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- PreConfigVer = "4"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts
- PreConfigVerNTDS = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- Account Name = "Active Directory"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Server = "NULL"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Search Return = "64"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Timeout = "3c"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Authentication = "2"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Simple Search = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Bind DN = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Port = "cc4"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Resolve Flag = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Secure Connection = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP User Name = "NULL"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Active Directory GC
- LDAP Search Base = "NULL"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- Account Name = "Bigfoot Internet Directory Service"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Server = "ldap.bigfoot.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP URL = "http://www.{BLOCKED}t.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Search Return = "64"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Timeout = "3c"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Authentication = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Simple Search = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\Bigfoot
- LDAP Logo = "%ProgramFiles%\Common Files\Services\bigfoot.bmp"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- Account Name = "VeriSign Internet Directory Service"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Server = "directory.verisign.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP URL = "http://www.{BLOCKED}gn.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Search Return = "64"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Timeout = "3c"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Authentication = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Search Base = "NULL"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Simple Search = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\VeriSign
- LDAP Logo = "%ProgramFiles%\Common Files\Services\verisign.bmp"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- Account Name = "WhoWhere Internet Directory Service"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Server = "ldap.whowhere.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP URL = "http://www.{BLOCKED}re.com"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Search Return = "64"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Timeout = "3c"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Authentication = "0"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Simple Search = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager\Accounts\WhoWhere
- LDAP Logo = "%ProgramFiles%\Common Files\Services\whowhere.bmp"

In HKEY_CURRENT_USER\Software\Microsoft\Internet Account Manager
- Default LDAP Account = "Active Directory GC"

In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
- OlkContactRefresh = "0"

In HKEY_CURRENT_USER\Software\Microsoft\WAB\WAB4
- OlkFolderRefresh = "0"

In HKEY_CURRENT_USER\Identities\{8A24C031-62FE-4BF5-94F0-BFD4FBCD674B}
- Identity Ordinal = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 234jbadb = "b5qCjQ==?_CHAR(0x03)_?"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 27fg7j0h = "{random values}"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DisableNotifications = "1"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List
- 3044:UDP = "3044:UDP:*:Enabled:UDP 3044"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DisableNotifications = "0"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List
- 1117:TCP = "1117:TCP:*:Enabled:TCP 1117"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 47g09ej = "{random values}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 2e3gi9fe = "{random values}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 2e3gi9fe = "{random characters}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 1ee5d9ea = "{random characters}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- ae099h = "{random characters}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HF_CHAR(0x03)_t_CHAR(0x10)_?B?Þ"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HFgG4chl5w3yCzlRCkmCuB+xw4neFmX4xp:_CHAR(0x11)_"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- ae099h = "{random values}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- fih0hjb = "{random values}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 234jbadb = "8d829a2e"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List
- 7215:UDP = "7215:UDP:*:Enabled:UDP 7215"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List
- 6249:TCP = "6249:TCP:*:Enabled:TCP 6249"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 1ee5d9ea = "{random values}"

In HKEY_CURRENT_USER\Software\Microsoft\Homagiuhpuob
- 234jbadb = "8d829a2f"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %User Temp%\RHRA438\/heap170id2.exe = "{random characters}"

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion
- VendorId = "{random values}"

In HKEY_LOCAL_MACHINE\SOFTWARE\WinNTData
- prx = "{random values}"

To delete the registry value this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
In the right panel, locate and delete the entry:
Vaunys = "%User Temp%\Kukee\vaunys.exe "
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>Run
In the right panel, locate and delete the entry:
dfjimiva = "%System%\dfjimiva.exe"
Again In the right panel, locate and delete the entry:
dfjimiva = "%User Profile%\dfjimiva.exe"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager>Accounts>Active Directory GC
In the right panel, locate and delete the entry:
LDAP Server ID = "0"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager>Accounts>Bigfoot
In the right panel, locate and delete the entry:
LDAP Server ID = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager>Accounts>VeriSign
In the right panel, locate and delete the entry:
LDAP Server ID = "2"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager>Accounts>WhoWhere
In the right panel, locate and delete the entry:
LDAP Server ID = "3"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager
In the right panel, locate and delete the entry:
Server ID = "4"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Internet Account Manager>Accounts
In the right panel, locate and delete the entry:
PreConfigVer = "4"
Again In the right panel, locate and delete the entry:
PreConfigVerNTDS = "1"
Again In the right panel, locate and delete the entry:
Account Name = "Active Directory"
Again In the right panel, locate and delete the entry:
LDAP Server = "NULL"
Again In the right panel, locate and delete the entry:
LDAP Search Return = "64"
Again In the right panel, locate and delete the entry:
LDAP Timeout = "3c"
Again In the right panel, locate and delete the entry:
LDAP Authentication = "2"
Again In the right panel, locate and delete the entry:
LDAP Simple Search = "0"
Again In the right panel, locate and delete the entry:
LDAP Bind DN = "0"
Again In the right panel, locate and delete the entry:
LDAP Port = "cc4"
Again In the right panel, locate and delete the entry:
LDAP Resolve Flag = "1"
Again In the right panel, locate and delete the entry:
LDAP Secure Connection = "0"
Again In the right panel, locate and delete the entry:
LDAP User Name = "NULL"
Again In the right panel, locate and delete the entry:
LDAP Search Base = "NULL"
Again In the right panel, locate and delete the entry:
Account Name = "Bigfoot Internet Directory Service"
Again In the right panel, locate and delete the entry:
LDAP Server = "ldap.bigfoot.com"
Again In the right panel, locate and delete the entry:
LDAP URL = "http://www.{BLOCKED}t.com"
Again In the right panel, locate and delete the entry:
LDAP Search Return = "64"
Again In the right panel, locate and delete the entry:
LDAP Timeout = "3c"
Again In the right panel, locate and delete the entry:
LDAP Authentication = "0"
Again In the right panel, locate and delete the entry:
LDAP Simple Search = "1"
Again In the right panel, locate and delete the entry:
LDAP Logo = "%ProgramFiles%\Common Files\Services\bigfoot.bmp"
Again In the right panel, locate and delete the entry:
Account Name = "VeriSign Internet Directory Service"
Again In the right panel, locate and delete the entry:
LDAP Server = "directory.verisign.com"
Again In the right panel, locate and delete the entry:
LDAP URL = "http://www.{BLOCKED}gn.com"
Again In the right panel, locate and delete the entry:
LDAP Search Return = "64"
Again In the right panel, locate and delete the entry:
LDAP Timeout = "3c"
Again In the right panel, locate and delete the entry:
LDAP Authentication = "0"
Again In the right panel, locate and delete the entry:
LDAP Search Base = "NULL"
Again In the right panel, locate and delete the entry:
LDAP Simple Search = "1"
Again In the right panel, locate and delete the entry:
LDAP Logo = "%ProgramFiles%\Common Files\Services\verisign.bmp"
Again In the right panel, locate and delete the entry:
Account Name = "WhoWhere Internet Directory Service"
Again In the right panel, locate and delete the entry:
LDAP Server = "ldap.whowhere.com"
Again In the right panel, locate and delete the entry:
LDAP URL = "http://www.{BLOCKED}re.com"
Again In the right panel, locate and delete the entry:
LDAP Search Return = "64"
Again In the right panel, locate and delete the entry:
LDAP Timeout = "3c"
Again In the right panel, locate and delete the entry:
LDAP Authentication = "0"
Again In the right panel, locate and delete the entry:
LDAP Simple Search = "1"
Again In the right panel, locate and delete the entry:
LDAP Logo = "%ProgramFiles%\Common Files\Services\whowhere.bmp"
Again In the right panel, locate and delete the entry:
Default LDAP Account = "Active Directory GC"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>WAB>WAB4
In the right panel, locate and delete the entry:
OlkContactRefresh = "0"
Again In the right panel, locate and delete the entry:
OlkFolderRefresh = "0"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Identities>{8A24C031-62FE-4BF5-94F0-BFD4FBCD674B}
In the right panel, locate and delete the entry:
Identity Ordinal = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Homagiuhpuob
In the right panel, locate and delete the entry:
234jbadb = "b5qCjQ
Again In the right panel, locate and delete the entry:
27fg7j0h = "{random values}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile
In the right panel, locate and delete the entry:
DisableNotifications = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>GloballyOpenPorts>List
In the right panel, locate and delete the entry:
3044:UDP = "3044:UDP:*:Enabled:UDP 3044"
Again In the right panel, locate and delete the entry:
DisableNotifications = "0"
Again In the right panel, locate and delete the entry:
1117:TCP = "1117:TCP:*:Enabled:TCP 1117"
Again In the right panel, locate and delete the entry:
47g09ej = "{random values}"
Again In the right panel, locate and delete the entry:
2e3gi9fe = "{random values}"
Again In the right panel, locate and delete the entry:
2e3gi9fe = "{random characters}"
Again In the right panel, locate and delete the entry:
1ee5d9ea = "{random characters}"
Again In the right panel, locate and delete the entry:
ae099h = "{random characters}"
Again In the right panel, locate and delete the entry:
fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HF_CHAR(0x03)_t_CHAR(0x10)_?B?Þ"
Again In the right panel, locate and delete the entry:
fih0hjb = "TgDp3vqi2UQUYhHrsAT+yH5oEu+xO1HFgG4chl5w3yCzlRCkmCuB+xw4neFmX4xp:_CHAR(0x11)_"
Again In the right panel, locate and delete the entry:
ae099h = "{random values}"
Again In the right panel, locate and delete the entry:
fih0hjb = "{random values}"
Again In the right panel, locate and delete the entry:
234jbadb = "8d829a2e"
Again In the right panel, locate and delete the entry:
7215:UDP = "7215:UDP:*:Enabled:UDP 7215"
Again In the right panel, locate and delete the entry:
6249:TCP = "6249:TCP:*:Enabled:TCP 6249"
Again In the right panel, locate and delete the entry:
1ee5d9ea = "{random values}"
Again In the right panel, locate and delete the entry:
234jbadb = "8d829a2f"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>AuthorizedApplications>List
In the right panel, locate and delete the entry:
%User Temp%\RHRA438\/heap170id2.exe = "{random characters}"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion
In the right panel, locate and delete the entry:
VendorId = "{random values}"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>WinNTData
In the right panel, locate and delete the entry:
prx = "{random values}"
Close Registry Editor.

Step 5

Restore these modified registry values

[ Learn More ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

In HKEY_CURRENT_USER\Identities
- From: Identity Ordinal = "2"
  To: Identity Ordinal = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
- From: LogSessionName = "stdout"
  To: LogSessionName = ""{random values}""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
- From: Active = "1"
  To: Active = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi
- From: ControlFlags = "1"
  To: ControlFlags = ""1""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi\ImapiSvc
- From: Guid = "8107d8e9-e323-49f5-bba2-abc35c243dca"
  To: Guid = ""8107d8e9-e323-49f5-bba2-abc35c243dca""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\Imapi\ImapiSvc
- From: BitNames = "{random characters}"
  To: BitNames = "" ImapiDebugError ImapiDebugWarning ImapiDebugTrace ImapiDebugInfo ImapiDebugX ImapiDebugSort""

Step 6

Search and delete these components

[ Learn More ]

There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

%User Temp%\senis.exe
gengo.exe
%User Temp%\Kukee\vaunys.exe
%User Profile%\Application Data\ovjuv.ara
%User Profile%\Address Book\Wilbert.wab
%System%\drivers\176d1.sys
%User Temp%\RHRA438\/heap170id2.exe
%User Temp%\ROH7E2C
%User Temp%\wcsA820.tmp
%User Temp%\aan2794.tmp
%User Temp%\wls2C3.tmp
%User Temp%\qkg10CB.tmp
%User Temp%\xli4FA1.tmp
%User Temp%\YBX7382\/b01.exe
%Temp%\5caaqdiv.TMP
%System%\dfjimiva.exe
%User Profile%\dfjimiva.exe

Step 7

Search and delete these folders

[ Learn More ]

Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.

%User Temp%\Kukee
%User Profile%\Microsoft\Address Book
%User Temp%\RHRA438
%User Temp%\YBX7382

Step 8

Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_KULUOZ.YZL. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 9

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

%User Temp%\gengo.exe

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BKDR_KULUOZ.YZL

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