Modified by: Rika Joi Gregorio
ALIASES:

HackTool:Win32/Mailpassview(Microsoft), Trojan-PWS.Win32.Chisburg(Ikarus), a variant of MSIL/Injector.BUY trojan(Eset)

 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:

  • In the wild: Yes

  OVERVIEW

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: 1,523,200 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 19 Sep 2013

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.

Dropping Routine

This spyware drops the following files:

  • %User Temp%\{random file name 1}.ini - deleted afterwards
  • %User Temp%\{random file name 2}.ini - deleted afterwards

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

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}m.{BLOCKED}f.de/index.php?action=add&username={email address}&password={Password}&app={Application}&pcname={Computer Name}&sitename=

  SOLUTION

Minimum Scan Engine: 9.300
FIRST VSAPI PATTERN FILE: 10.296.07
FIRST VSAPI PATTERN DATE: 24 Sep 2013
VSAPI OPR PATTERN File: 10.297.00
VSAPI OPR PATTERN Date: 24 Sep 2013

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

Search and delete these files

[ Learn More ]
There may be some component files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result.
  • %User Temp%\{random file name 1}.ini
  • %User Temp%\{random file name 2}.ini

Step 3

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