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Threat Encyclopedia

TROJ_FLOCK.I

ANALYSIS BY

Kathleen Notario


PLATFORM:

Windows 98, ME, NT, 2000, XP, Server 2003

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

  • Threat Type:Trojan

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW


Trend Micro has flagged this Trojan as noteworthy due to the increased potential for damage, propagation, or both, that it possesses.

To get a one-glance comprehensive view of the behavior of this Trojan, refer to the Threat Diagram shown below.

This Trojan may be dropped by other malware.

TECHNICAL DETAILS

File Size:

1,953 bytes

File Type:

Script

Memory Resident:

No

Initial Samples Received Date:

29 Jun 2010

Payload:

Sends an SMS message

Arrival Details

This Trojan may be dropped by the following malware:

  • SYMBOS_FLOCK.I

Other Details

Based on analysis of the codes, it has the following capabilities:

  • Sends the following Short Message Service (SMS) that may lead to unwanted service charges for sending the SMS:
    To: 7250
    Message: mumym xxx joker90
    Note, however, that the purpose of the sent message is unknown and may change depending on the malicious user's intentions.

It runs on the following platforms:

  • Symbian Series 60

SOLUTION

Minimum Scan Engine:

8.900

VSAPI OPR PATTERN File:

7.269.00

VSAPI OPR PATTERN Date:

26 Jun 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

Remove malware files dropped/downloaded by TROJ_FLOCK.I

Step 3

Scan your computer with your Trend Micro product to delete files detected as TROJ_FLOCK.I. 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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