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TSPY_KEYLOG.AL

October 09, 2012
 Analysis by: Michael Cabel
 Modified by: Kathleen Notario
 ALIASES:

Trojan:WIn32/Dynamer!dtc (Microsoft); Hacktool.Keylogger (Symantec); Trojan.Win32.Zapchast.jdy (Kaspersky); Generic.dx!bafj (Mcafee)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, , Dropped by other malware

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 arrives as a component bundled with malware/grayware packages.

It may be injected into processes running in memory.

It does not have any propagation routine.

It does not have any downloading capability.

It logs a user's keystrokes to steal information.

It exports functions used by other malware. It requires its main component to successfully perform its intended routine.

  TECHNICAL DETAILS

File Size:

69,632 bytes

File Type:

DLL

Memory Resident:

Yes

Initial Samples Received Date:

18 Aug 2011

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.

It arrives as a component bundled with malware/grayware packages.

Installation

This spyware may be injected into processes running in memory.

Propagation

This spyware does not have any propagation routine.

Dropping Routine

This spyware drops the following file(s), which it uses for its keylogging routine:

  • C:\recycler\suc.sys
  • C:\recycler\tcp.dll

Download Routine

This spyware does not have any downloading capability.

Information Theft

This spyware logs a user's keystrokes to steal information.

Other Details

This spyware exports functions used by other malware.

It requires its main component to successfully perform its intended routine.

NOTES:

This spyware may log keystrokes that may be used to steal user credentials such as user names and passwords from sites accessed on the affected system.

It displays the following message boxes:

It does not have rootkit capabilities.

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.200

VSAPI OPR PATTERN File:

8.363.00

VSAPI OPR PATTERN Date:

19 Aug 2011

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

Search and delete these files

[ Learn More ]
There may be some component files 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.  
  • C:\recycler\suc.sys
  • C:\recycler\tcp.dll

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_KEYLOG.AL. 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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