TSPY_TRICKLOAD.V

December 01, 2016
 Analysis by: Pearl Charlaine Espejo
 ALIASES:

Trojan:Win32/Totbrick.A (Microsoft); Trojan.TrickBot (Malwarebytes)

 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 may be downloaded by other malware/grayware from remote sites.

It deletes the initially executed copy of itself.

  TECHNICAL DETAILS

File Size:

357,597 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

30 Nov 2016

Arrival Details

This spyware may be downloaded by the following malware/grayware from remote sites:

  • W2KM_DLOADR.YYSVT

Installation

This spyware drops the following copies of itself into the affected system and executes them:

  • %Application Data%\{malware filename}.exe

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It drops the following files:

  • %Application Data%\client_id
  • %Application Data%\group_tag
  • %User Temp%\~{random characters}.TMP

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

It creates the following folders:

  • %Application Data%\Modules

(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Autostart Technique

This spyware drops the following files:

  • %System%\Tasks\Bot

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

Other Details

This spyware connects to the following URL(s) to get the affected system's IP address:

  • http://myexternalip.com/raw

It connects to the following possibly malicious URL:

  • {BLOCKED}.{BLOCKED}.111.164:443
  • {BLOCKED}.{BLOCKED}.177.32:443
  • {BLOCKED}.{BLOCKED}.176.6:443
  • {BLOCKED}.{BLOCKED}.21.162:443
  • {BLOCKED}.{BLOCKED}.192.171:443
  • {BLOCKED}.{BLOCKED}.186.52:443
  • {BLOCKED}.{BLOCKED}.95.27:443
  • {BLOCKED}.{BLOCKED}.159.106:443
  • {BLOCKED}.{BLOCKED}.219.253:443
  • {BLOCKED}.{BLOCKED}.75.110:443
  • {BLOCKED}.{BLOCKED}.83.132:443
  • {BLOCKED}.{BLOCKED}.202.214:443
  • {BLOCKED}.{BLOCKED}.44.18:443
  • {BLOCKED}.{BLOCKED}.108.68:443
  • {BLOCKED}.{BLOCKED}.108.172:443
  • {BLOCKED}.{BLOCKED}.144.116:443

It deletes the initially executed copy of itself

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.930.02

FIRST VSAPI PATTERN DATE:

30 Nov 2016

VSAPI OPR PATTERN File:

12.931.00

VSAPI OPR PATTERN Date:

01 Dec 2016

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

Restart in Safe Mode

[ Learn More ]

Step 4

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.  
  • %Application Data%\Modules

Step 5

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.
  • %System%\Tasks\Bot
  • %Application Data%\client_id
  • %Application Data%\group_tag
  • %User Temp%\~{random characters}.TMP

Step 6

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


Did this description help? Tell us how we did.