ALIASES:

PWS:Win32/Ldpinch.BQ (Microsoft); W32/HLLP.Canbe !! (McAfee); W32.Canbis (Symantec); Virus.Win32.Lamer.gp (Kaspersky); Virus.Win32.Canbis.a (v) (Sunbelt); ERROR (FSecure); Trojan horse Generic17.OUC (AVG)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan 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: 874,265 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 09 May 2013

Arrival Details

This Trojan 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 Trojan drops the following copies of itself into the affected system:

  • 2232215990.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroBroker.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroRd32Info.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AcroTextExtractor.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\AdobeCollabSync.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\Eula.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\LogTransport2.exe
  • %Program Files%\Adobe\Reader 10.0\Reader\PDFPrevHndlrShim.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AcrobatUpdater.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\AdobeARM.exe
  • %Program Files%\Common Files\Adobe\ARM\1.0\ReaderUpdater.exe
  • %Program Files%\Common Files\Microsoft Shared\DW\DW20.EXE
  • %Program Files%\Common Files\Microsoft Shared\DW\DWTRIG20.EXE
  • %Program Files%\Common Files\Microsoft Shared\MSInfo\msinfo32.exe
  • %Program Files%\Common Files\Microsoft Shared\Speech\sapisvr.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn1.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwconn2.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwrmind.exe
  • %Program Files%\Internet Explorer\Connection Wizard\icwtutor.exe
  • %Program Files%\Internet Explorer\Connection Wizard\inetwiz.exe
  • %Program Files%\Internet Explorer\Connection Wizard\isignup.exe
  • %Program Files%\Internet Explorer\iedw.exe
  • %Program Files%\Internet Explorer\IEXPLORE.EXE
  • %Program Files%\Messenger\msmsgs.exe
  • %Program Files%\Movie Maker\moviemk.exe
  • %Program Files%\MSN\MSNCoreFiles\Install\MSN9Components\Digcore.exe
  • %Program Files%\MSN\MSNCoreFiles\Install\MSN9Components\Msncli.exe
  • %Program Files%\MSN\MSNCoreFiles\Install\msnsusii.exe
  • %Program Files%\MSN Gaming Zone\Windows\bckgzm.exe
  • %Program Files%\MSN Gaming Zone\Windows\chkrzm.exe
  • %Program Files%\MSN Gaming Zone\Windows\hrtzzm.exe
  • %Program Files%\MSN Gaming Zone\Windows\Rvsezm.exe
  • %Program Files%\MSN Gaming Zone\Windows\shvlzm.exe
  • %Program Files%\MSN Gaming Zone\Windows\zClientm.exe
  • %Program Files%\NetMeeting\cb32.exe
  • %Program Files%\NetMeeting\conf.exe
  • %Program Files%\NetMeeting\wb32.exe
  • %Program Files%\Outlook Express\msimn.exe
  • %Program Files%\Outlook Express\oemig50.exe
  • %Program Files%\Outlook Express\setup50.exe
  • %Program Files%\Outlook Express\wab.exe
  • %Program Files%\Outlook Express\wabmig.exe
  • %Program Files%\Windows Media Player\migrate.exe
  • %Program Files%\Windows Media Player\mplayer2.exe
  • %Program Files%\Windows Media Player\setup_wm.exe
  • %Program Files%\Windows Media Player\wmplayer.exe
  • %Program Files%\Windows NT\Accessories\wordpad.exe
  • %Program Files%\Windows NT\dialer.exe
  • %Program Files%\Windows NT\hypertrm.exe
  • %Program Files%\Windows NT\Pinball\PINBALL.EXE
  • %Program Files%\WinPcap\rpcapd.exe
  • %Program Files%\WinPcap\Uninstall.exe
  • %Windows%\Help\Tours\mmTour\tour.exe
  • %Windows%\hh.exe
  • %Windows%\Microsoft.NET\assembly\GAC_MSIL\Microsoft.Workflow.Compiler\v4.0_4.0.0.0__31bf3856ad364e35\Microsoft.Workflow.Compiler.exe

(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %Windows% is the Windows folder, which is usually C:\Windows.)

Other System Modifications

This Trojan deletes the following files:

  • 2232215990.exe

Dropping Routine

This Trojan drops the following files:

  • 8339708921.exe
  • %System Root%\log.txt

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.300

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

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.
  • 8339708921.exe
  • %System Root%\log.txt

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_COSMU.AJ. 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.

Step 4

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • 2232215990.exe


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