TSPY_EXPJACK.ZZXX

August 27, 2013
 Modified by: Alvin Bacani
 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: Spyware

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This spyware 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:

17,408 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

15 Feb 2012

Payload:

Connects to URLs/IPs

Arrival Details

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

Other System Modifications

This spyware deletes the following files:

  • files in %Temp%

(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)

Backdoor Routine

This spyware connects to the following URL(s) to send and receive commands from a remote malicious user:

  • http://photo.{BLOCKED}ktw.com

NOTES:

This spyware retrieves information on the current open window like Window Title.

It sends the information via GET and POST Request using a random combination of the following strings as part of the URL

  • 2012
  • adi
  • afp
  • aic
  • ap
  • avi
  • bank
  • blogs
  • book
  • brand
  • build
  • car
  • child
  • com
  • contact
  • css
  • dv
  • events
  • faq
  • flash
  • global
  • go
  • gov
  • gr
  • groups
  • ho
  • home
  • house
  • hp
  • id
  • identity
  • images
  • img
  • java
  • js
  • lib
  • list
  • login
  • logo
  • logon
  • mail
  • me
  • member
  • mesg
  • met
  • mod
  • money
  • msdownload
  • net
  • news
  • nsh
  • nws
  • oly
  • page
  • photo
  • pic
  • pictures
  • qe
  • qr
  • reg
  • rn
  • school
  • search
  • secu
  • set
  • software
  • src
  • stock
  • topic
  • tops
  • trb
  • tw
  • uh
  • update
  • url
  • us
  • user
  • view
  • wb
  • weather
  • ww
  • xml
  • yahoo
  • ylt

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

8.780.04

FIRST VSAPI PATTERN DATE:

15 Feb 2012

VSAPI OPR PATTERN File:

8.781.00

VSAPI OPR PATTERN Date:

15 Feb 2012

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 and note files detected as TSPY_EXPJACK.ZZXX

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_EXPJACK.ZZXX. 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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