Analysis by: Karl Dominguez
ALIASES:

SPY/CALLMAGIC!SYMBOS

 THREAT SUBTYPE:

Spying Tool

 PLATFORM:

Symbian S60

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

This Trojan may be unknowingly downloaded by a user while visiting malicious websites. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size: 41,337 bytes
File Type: SIS
Memory Resident: No
Initial Samples Received Date: 26 Jan 2011

Arrival Details

This Trojan may be unknowingly downloaded by a user while visiting malicious websites.

However, as of this writing, the said sites are inaccessible.

Other Details

This Trojan does the following:

  • Capable of automatically answering incoming calls.
  • Capable of sending SMS with a link possibly pointing to a copy of itself:
    • http://wap.{BLOCKED}st.cn/index.wml
    • http://wap.{BLOCKED}st.cn/b.wml
    • http://wap.{BLOCKED}st.cn/c.wml
    • http://wap.{BLOCKED}st.cn/a.wml
    • http://wap.{BLOCKED}st.cn/b.wml
    • http://wap.{BLOCKED}st.cn/c.wml
    • http://wap.{BLOCKED}st.cn/d.wml
    • http://wap.{BLOCKED}st.cn/e.wml
    • http://wap.{BLOCKED}st.cn/f.wml
    • http://wap.{BLOCKED}st.cng.wml

    As of this writing, the said sites are inaccessible

  SOLUTION

Minimum Scan Engine: 8.900

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

Scan your computer with your Trend Micro product to delete files detected as SYMBOS_CALLMAG.A. 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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