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Threat Encyclopedia

TROJ_SPAMBOT.B


ALIASES:

TrojanSpy:Win32/Ursnif.G (Microsoft); Spy-Agent.bg (McAfee); Hacktool.Rootkit (Symantec); PAK:PE_Patch, PAK:UPack, Trojan-PSW.Win32.Papras.w (Kaspersky); Trojan.Win32.Packer.Upack0.3.9 (ep) (Sunbelt); Trojan.Generic.3139055 (FSecure)

PLATFORM:

Windows 2000, XP, Server 2003

OVERALL RISK RATING:
DAMAGE POTENTIAL:
DISTRIBUTION POTENTIAL:
REPORTED INFECTION:

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted:

  • In the wild: Yes

OVERVIEW

TECHNICAL DETAILS

SOLUTION

Minimum Scan Engine:

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

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
    • InetData
  • In HKEY_CURRENT_USER\SOFTWARE\Microsoft
    • InetData
  • In HKEY_CURRENT_USER\SOFTWARE\Microsoft
    • InetData
  • In HKEY_CURRENT_USER\SOFTWARE\Microsoft
    • InetData

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\Microsoft\InetData
    • k1=23785df6
  • In HKEY_CURRENT_USER\Software\Microsoft\InetData
    • k2=468779a
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • ttool="%Windows%\9129837.exe"
  • In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
    • ttool="%Windows%\9129837.exe"

Step 4

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_LOCAL_MACHINE\SOFTWARE\Microsoft\DrWatson
    • From: NumberOfCrashes=1
      To: NumberOfCrashes=0

Step 5

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 Profile%\Application Data\VMware
  • %User Profile%\Microsoft\Dr Watson
  • %Windows%\SoftwareDistribution
  • %Windows%\SoftwareDistribution\DataStore\Logs\
  • %Windows%\SoftwareDistribution\DataStore

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.
  • %System Root%\a.bat
  • %Windows%\hide_evr2.sys
  • %User Profile%\Dr Watson\drwtsn32.log
  • %User Profile%\Dr Watson\user.dmp

Step 7

Scan your computer with your Trend Micro product to delete files detected as TROJ_SPAMBOT.B. 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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