Analysis by: Christopher Daniel So
 PLATFORM:

Windows 2000, XP, Server 2003

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan may be dropped by other malware.

It connects to certain URLs. It may do this to remotely inform a malicious user of its installation. It may also do this to download possibly malicious files onto the computer, which puts the computer at a greater risk of infection by other threats.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 184,320 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 25 Nov 2010
Payload: Connects to URLs/Ips

Arrival Details

This Trojan may be dropped by the following malware:

Other System Modifications

This Trojan adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\

It adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings\
Zones\
1806 = 0

Download Routine

This Trojan connects to the following malicious URLs:

  • http://{BLOCKED}meat.net/oioiwemdweoidm.php?ini={random string}
  • http://{BLOCKED}otable.net/oioiwemdweoidm.php?ini={random string}
  • http://{BLOCKED}.net/oioiwemdweoidm.php?ini={random string}

Other Details

This Trojan deletes itself after execution.

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 7.652.04
FIRST VSAPI PATTERN DATE: 26 Nov 2010

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

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\Windows\CurrentVersion\Internet Settings\
    • Zones

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_FAKEAV.EKA. 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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