Analysis by: Anthony Joe Melgarejo
ALIASES:

Trojan.PWS.Stealer.2155 (DrWeb)

 PLATFORM:

Windows

 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.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size: 139,066 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 04 Jul 2015

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 adds the following registry keys:

HKEY_CURRENT_USER\Software\WinRAR

It adds the following registry entries:

HKEY_CURRENT_USER\Software\WinRAR
HWID = "{random values}"

HKEY_CURRENT_USER\Software\WinRAR
Client Hash = "{random values}"

Other Details

This spyware connects to the following possibly malicious URL:

  • http://{BLOCKED}ciety.com/cgi/open.php?AjDdUMhbDVn4StxDat8vR4WEk55GO4rhJCn
  • http://{BLOCKED}kmartin.com/gifs/admin.php?OgBb4sD4UXUPNYLNO3Qchm2iUrkQOuc
  • http://{BLOCKED}lequinehoof.com/images/gallery.php?LnsBHWuAUSXzkVCrBMY1mfx
  • http://{BLOCKED}heatre.com/downloads/search.php?ifFWWBcIGV48tTzV8IGA5nUwgr
  • http://{BLOCKED}lenaussies.com/bothg/update.php?8k7IBn1SvXBuU1w2qUPOy8JKlP

It deletes itself after execution.

  SOLUTION

Minimum Scan Engine: 9.750

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

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_CURRENT_USER\Software\WinRAR
    • HWID = "{random values}"
  • In HKEY_CURRENT_USER\Software\WinRAR
    • Client Hash = "{random values}"

Step 3

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