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INF_CANTIX.DSL

February 19, 2015
 Analysis by: RonJay Kristoffer Caragay
 ALIASES:

Worm:VBS/Cantix!inf (Microsoft); W32/Cantix-B (Sophos); Worm.VBS.Cantix.a (Kaspersky); W32/Cantix.A!worm (Fortinet); Worm/Cantix.inf (Avira)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan may arrive bundled with malware packages as a malware component. It may be dropped by other malware.

It is a component of other malware.

It automatically executes files when a user opens a drive.

  TECHNICAL DETAILS

File Size:

246 bytes

File Type:

INF

Memory Resident:

No

Initial Samples Received Date:

06 Feb 2015

Arrival Details

This Trojan may arrive bundled with malware packages as a malware component.

It may be dropped by the following malware:

  • VBS_CANTIX.HV

Installation

This Trojan is a component of other malware.

Propagation

The said .INF file contains the following strings:

[autorun]
open=WScript.exe //e:VBScript dekstop.ini auto
shell\open=Open
shell\open\Command=WScript.exe //e:VBScript dekstop.ini auto
shell\open\Default=1
shell\explore=Explore
shell\explore\Command=WScript.exe //e:VBScript dekstop.ini auto

Other Details

This Trojan automatically executes the following files when a user opens a drive:

  • dekstop.ini - detected as VBS_CANTIX.HV

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

11.462.02

FIRST VSAPI PATTERN DATE:

06 Feb 2015

VSAPI OPR PATTERN File:

11.463.00

VSAPI OPR PATTERN Date:

07 Feb 2015

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

Remove the malware/grayware file that dropped/downloaded INF_CANTIX.DSL. (Note: Please skip this step if the threat(s) listed below have already been removed.)

Step 3

Search and delete AUTORUN.INF files created by INF_CANTIX.DSL that contain these strings

[ Learn More ]
    [autorun]
    open=WScript.exe //e:VBScript dekstop.ini auto
    shell\open=Open
    shell\open\Command=WScript.exe //e:VBScript dekstop.ini auto
    shell\open\Default=1
    shell\explore=Explore
    shell\explore\Command=WScript.exe //e:VBScript dekstop.ini auto

Step 4

Scan your computer with your Trend Micro product to delete files detected as INF_CANTIX.DSL. 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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