TSPY_BANKER.SYL


 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • 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.

  TECHNICAL DETAILS

File Size:

1,241,966 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

24 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 drops the following copies of itself into the affected system:

  • %System%\wwtask.exe

(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)

Other System Modifications

This spyware adds the following registry keys:

HKEY_CURRENT_USER\Software\Tz0\
BIOS

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\SafeBoot\Minimal\
NetworkAgent

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\SafeBoot\Network\
NetworkAgent

HKEY_LOCAL_MACHINE\Software\Tz0\
BIOS

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Tz0\
BIOS
SMBiosType = "PHYSMEM"

HKEY_CURRENT_USER\Software\Tz0\
BIOS
SMBios = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_macid = "AA82D660A39CEA170256E4292F"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_macid = "280054E5251E6C9681D564AAA8"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_s = "109139122142134090"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_deb = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_sp = "092083117112098103093104112108117140146140141126134076075117"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_sn = "144144141122140132071126145126"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_mut = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_mutp = "092083117112098103093104112108117140146140141126134076075117"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_mutt = "073"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_mutx = "073"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_tray = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_usrt = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_fpreset = "1"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetworkAgent
ImagePath = "%System%\wwtask.exe -service"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetworkAgent
Description = "Manages objects protocols in the Network and Dial-Up synchronizations"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetworkAgent
DisplayName = "Network Agent Driver Tz0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_dlt = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Tz0\
BIOS
SMBiosType = "PHYSMEM"

HKEY_LOCAL_MACHINE\SOFTWARE\Tz0\
BIOS
SMBios = "{random values}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_macid = "4B233700037C8AF06CF8474FD5"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_macid = "BBB387D0322361A9B480DE272D"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_p = "077076078082074"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_rport = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_pdie = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_max = "3e7"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_ui = "074"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_pcrypt = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_pon = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_up = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_lvv = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_lvf = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_gtimer = "14997"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_comp = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_recp = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_shadow = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_lb = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_lc = "2"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_exs = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_htm = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_fcnv = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_fct0 = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_secu = "074"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_sece = "069"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_sect = "5"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_secwa = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_secw = "4"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_secss = "511111111111011"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_fmhz = "96"

HKEY_LOCAL_MACHINE\SOFTWARE\Clients\
NetworkAgentDriver
t0_emhz = "0"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.300

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

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\Tz0
    • BIOS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients
    • NetworkAgentDriver
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Minimal
    • NetworkAgent
  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot\Network
    • NetworkAgent
  • In HKEY_LOCAL_MACHINE\Software\Tz0
    • BIOS

Step 3

Delete this registry value

[ 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\Tz0\BIOS
    • SMBiosType = "PHYSMEM"
  • In HKEY_CURRENT_USER\Software\Tz0\BIOS
    • SMBios = "{random values}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_macid = "AA82D660A39CEA170256E4292F"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_macid = "280054E5251E6C9681D564AAA8"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_s = "109139122142134090"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_deb = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_sp = "092083117112098103093104112108117140146140141126134076075117"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_sn = "144144141122140132071126145126"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_mut = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_mutp = "092083117112098103093104112108117140146140141126134076075117"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_mutt = "073"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_mutx = "073"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_tray = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_usrt = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_fpreset = "1"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetworkAgent
    • ImagePath = "%System%\wwtask.exe -service"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetworkAgent
    • Description = "Manages objects protocols in the Network and Dial-Up synchronizations"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetworkAgent
    • DisplayName = "Network Agent Driver Tz0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_dlt = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Tz0\BIOS
    • SMBiosType = "PHYSMEM"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Tz0\BIOS
    • SMBios = "{random values}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_macid = "4B233700037C8AF06CF8474FD5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_macid = "BBB387D0322361A9B480DE272D"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_p = "077076078082074"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_rport = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_pdie = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_max = "3e7"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_ui = "074"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_pcrypt = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_pon = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_up = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_lvv = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_lvf = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_gtimer = "14997"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_comp = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_recp = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_shadow = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_lb = "1"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_lc = "2"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_exs = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_htm = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_fcnv = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_fct0 = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_secu = "074"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_sece = "069"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_sect = "5"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_secwa = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_secw = "4"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_secss = "511111111111011"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_fmhz = "96"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Clients\NetworkAgentDriver
    • t0_emhz = "0"

Step 4

Scan your computer with your Trend Micro product to delete files detected as TSPY_BANKER.SYL. 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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