TSPY_ZBOT.FLV
Suspicious.BredoLab (Symantec)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Spyware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This spyware 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
356,865 bytes
EXE
Yes
16 Oct 2012
Arrival Details
This spyware 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 spyware creates the following folders:
- %User Profile%\Application Data\Fahiq
(Note: %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 spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{C8B0FB29-AD41-AD40-5C09-405F58D6634D} = "%User Profile%\Fahiq\olmi.exe"
Other System Modifications
This spyware adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Reqe
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Reqe
13dhh3jc = "FOZnMgn3dEhfecf0yXFodKq/GtopCw==??"
HKEY_CURRENT_USER\Software\Microsoft\
Reqe
j1hf506 = "cOYVMg==_CHAR(0x03)__CHAR(0x03)_T_CHAR(0x0C)_?G?u"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "1"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
20461:UDP = "20461:UDP:*:Enabled:UDP 20461"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "0"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\GloballyOpenPorts\
List
22946:TCP = "22946:TCP:*:Enabled:TCP 22946"
HKEY_CURRENT_USER\Software\Microsoft\
Reqe
364429f6 = "{random values}"
HKEY_CURRENT_USER\Software\Microsoft\
Reqe
j1hf506 = "{random values}"
Dropping Routine
This spyware drops the following files:
- %User Profile%\Application Data\Fahiq
- %User Profile%\Fahiq\olmi.exe
- %Application Data%\biihat.qel
(Note: %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.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
Other Details
This spyware deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.200
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
Step 3
Delete this registry key
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
- Reqe
Step 4
Delete this registry value
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\Windows\CurrentVersion\Run
- {C8B0FB29-AD41-AD40-5C09-405F58D6634D} = "%User Profile%\Fahiq\olmi.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Reqe
- 13dhh3jc = "FOZnMgn3dEhfecf0yXFodKq/GtopCw==??"
- In HKEY_CURRENT_USER\Software\Microsoft\Reqe
- j1hf506 = "cOYVMg==_CHAR(0x03)__CHAR(0x03)_T_CHAR(0x0C)_?G?u"
- 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
- 20461:UDP = "20461:UDP:*:Enabled:UDP 20461"
- 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
- 22946:TCP = "22946:TCP:*:Enabled:TCP 22946"
- In HKEY_CURRENT_USER\Software\Microsoft\Reqe
- 364429f6 = "{random values}"
- In HKEY_CURRENT_USER\Software\Microsoft\Reqe
- j1hf506 = "{random values}"
Step 5
Search and delete these components
- %User Profile%\Application Data\Fahiq
- %User Profile%\Fahiq\olmi.exe
- %Application Data%\biihat.qel
Step 6
Search and delete this folder
- %User Profile%\Application Data\Fahiq
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_ZBOT.FLV. 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.
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