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TSPY_BEHAV.DN

November 18, 2012
 ALIASES:

TrojanSpy:Win32/Keylogger.AS, TrojanSpy:Win32/Keylogger.AS, TrojanSpy:Win32/Keylogger.AS (Microsoft); [00001670.EXE\00012802.EXE\00012802.EXE]:Generic PWS.gr, [00001670.EXE\00013a02.EXE]:PWS-QQPass.gen. (McAfee); Backdoor.Trojan (Symantec); Trojan.Win32.Zytric.t (Kaspersky); Trojan.Win32.Generic.pak!cobra (Sunbelt); Trojan.Generic.3598533 (FSecure)

 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:

137,728 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

18 Nov 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.

Dropping Routine

This spyware drops the following files:

  • %Windows%\MicroS0FT.exe
  • %System%\system_ylmy.exe
  • %System%\kill.bat

(Note: %Windows% is the Windows folder, which is usually C:\Windows or C:\WINNT.. %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.)

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

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.
  • %Windows%\MicroS0FT.exe
  • %System%\system_ylmy.exe
  • %System%\kill.bat

Step 3

Scan your computer with your Trend Micro product to delete files detected as TSPY_BEHAV.DN. 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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