Analysis by: Donald Adrian Castillo
ALIASES:

a variant of MSIL/Packed.Confuser.G (ESET-NOD32), Win32.SuspectCrc (Ikarus)

 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: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet

This hacking tool arrives as a component bundled with malware/grayware packages.

  TECHNICAL DETAILS

File Size: 335, 872 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 14 May 2014
Payload: Displays message/message boxes

Arrival Details

This hacking tool arrives as a component bundled with malware/grayware packages.

NOTES:

This hacktool displays the following images:


This hacktool drops the following files once the user clicked on "Gen Server button":

  • {Grayware Path}\Server.exe
  • {Grayware Path}\Stub.exe

It also displays this image:

This hacktool sends an email to the GMAIL entered once the user clicked on "Test Connection" button.

Subject: Victim Pass
Body: Working Perfectly

This hacktool saves the email and password entered and a list of websites in server.exe once the user clicks on "Gen Server" button. The list of websites is as follows:

  • http://{BLOCKED}e.tt/api/1/files/4r2wJmI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/2eWGOmI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/7vaUQmI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/53YOSmI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/99k4TmI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/34AQMoI1/0/blob?download
  • http://{BLOCKED}e.tt/api/1/files/9CLtAoI1/0/blob?download

  SOLUTION

Minimum Scan Engine: 9.750
SSAPI PATTERN File: 1.645.00
SSAPI PATTERN Date: 30 Jul 2015

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Search and delete this file

[ Learn More ]
There may be some 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.
  • {Grayware Path}\Server.exe
  • {Grayware Path}\Stub.exe

Step 4

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