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OSX_JANICAB.A

July 17, 2013
 Analysis by: Jaime Benigno Reyes
 ALIASES:

Backdoor.Python.Janicab.a (Kaspersky), OSX.Janicab (Symantec), Python/Janicab.A trojan (Nod32)

 PLATFORM:

Mac OS X

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

Varies

File Type:

Other

Memory Resident:

Yes

Initial Samples Received Date:

17 Jul 2013

Arrival Details

This backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This backdoor drops the following component file(s):

  • ~/.t/mt
  • ~/.t/runner.pyc
  • ~/.t/runner.sh
  • ~/.t/settings.ini
  • ~/.t/sox
  • ~/.t/starter.pyc
  • ~/.t/StarterCmdExec.pyc
  • ~/.t/StarterNetUtils.pyc
  • ~/.t/StarterRec.pyc
  • ~/.t/StarterScreenShots.pyc
  • ~/.t/StarterSettings.pyc
  • ~/.t/v

It creates the following folders:

  • ~/.t

Other Details

This backdoor connects to the following possibly malicious URL:

  • http://www.{BLOCKED}e.com/watch?v=DZZ3tTTBiTs
  • http://www.{BLOCKED}e.com/watch?v=ky4M9kxUM7Y
  • http://{BLOCKED}ink.nl/images/re.php

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

10.158.07

FIRST VSAPI PATTERN DATE:

17 Jul 2013

VSAPI OPR PATTERN File:

10.159.00

VSAPI OPR PATTERN Date:

17 Jul 2013

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

NOTES:

Search and delete the dropped component files by following these steps:

  1. In Spotlight, search and run Terminal.
  2. In Terminal, type the following and hit the Enter key per entry:
    • rm ~/.t/mt
    • rm ~/.t/mt
    • rm ~/.t/runner.pyc
    • rm ~/.t/runner.sh
    • rm ~/.t/settings.ini
    • rm ~/.t/sox
    • rm ~/.t/starter.pyc
    • rm ~/.t/StarterCmdExec.pyc
    • rm ~/.t/StarterNetUtils.pyc
    • rm ~/.t/StarterRec.pyc
    • rm ~/.t/StarterScreenShots.pyc
    • rm ~/.t/StarterSettings.pyc
    • rm ~/.t/v


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