TROJ_SEFNIT.CS

February 18, 2014
 Analysis by: Mark Joseph Manahan
 ALIASES:

Trojan horse Generic35.BPCD (AVG) ,W32/Sefnit.CV!tr (Fortinet) ,Trojan:Win32/Miuref.B (Microsoft) ,a variant of Win32/Sefnit.CV trojan (Eset) ,Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This Trojan may be dropped by other malware.

It retrieves specific information from the affected system.

  TECHNICAL DETAILS

File Size:

22,016 bytes

File Type:

DLL

Memory Resident:

No

Initial Samples Received Date:

04 Feb 2014

Payload:

Collects system information

Arrival Details

This Trojan may be dropped by other malware.

Information Theft

This Trojan retrieves the following information from the affected system:

  • Volume Information
  • Computer Name
  • Time Zone Information

Other Details

This Trojan requires the following additional components to properly run:

  • {Malware Path}\{Malware Filename}.{extension}
    where {extension} is any of the following:
  • .idx
  • .lck
  • .dat
  • .txt

  SOLUTION

Minimum Scan Engine:

9.700

FIRST VSAPI PATTERN FILE:

10.584.05

FIRST VSAPI PATTERN DATE:

04 Feb 2014

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

Scan your computer with your Trend Micro product to delete files detected as TROJ_SEFNIT.CS. 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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