Analysis by: Rika Joi Gregorio
ALIASES:

Trojan.BAT.Downbat.a (Sunbelt), BAT/Ftp.MF!tr.dldr(Fortinet), BAT/TrojanDownloader.Ftp.NOK trojan(Eset)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Dropped by other malware, Downloaded from the Internet

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. It may be dropped by other malware.

  TECHNICAL DETAILS

File Size: Varies
File Type: BAT
Memory Resident: No
Initial Samples Received Date: 09 Dec 2014
Payload: Downloads files

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.

It may be dropped by other malware.

Download Routine

This Trojan downloads files from the following File Transfer Protocol (FTP) sites:

  • {BLOCKED}.{BLOCKED}.35.121/899.exe

It saves the files it downloads using the following names:

  • %User Profile%\on899.exe - detected as PE_INDUC.A

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

  SOLUTION

Minimum Scan Engine: 9.700
VSAPI OPR PATTERN File: 11.339.00
VSAPI OPR PATTERN Date: 12 Dec 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

Remove malware/grayware files dropped/downloaded by BAT_DLOAD.SM0. (Note: Please skip this step if the threats listed below have already been removed.)

Step 3

Scan your computer with your Trend Micro product to delete files detected as BAT_DLOAD.SM0. 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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