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BKDR_HANCITOR.B

June 23, 2016
 Analysis by: Rhena Inocencio
 ALIASES:

Trojan.Win32.Agent.nevzkx (Kaspersky), a variant of Win32/Injector.DAQT trojan (ESET), W32/Injector.DAPT!tr (Fortinet)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware

This backdoor may be dropped by other malware.

It executes commands from a remote malicious user, effectively compromising the affected system.

It gathers information and reports it to its servers.

  TECHNICAL DETAILS

File Size:

83,968 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

22 Jun 2016

Payload:

Connects to URLs/IPs

Arrival Details

This backdoor may be dropped by the following malware:

  • W2KM_HANCITOR.B

Backdoor Routine

This backdoor executes the following commands from a remote malicious user:

  • Download a file from a URL and execute it
  • Download a file form a URL and inject to svchost.exe
  • Uninstall self by deleting itself via cmd.exe

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

  • http://{BLOCKED}itithan.com/sl/gate.php
  • http://{BLOCKED}ti.ru/sl/gate.php
  • http://{BLOCKED}nreton.ru/sl/gate.php

Download Routine

This backdoor accesses the following websites to download files:

  • http://{BLOCKED}queen.ru/kontakty/inst2.exe
  • http://{BLOCKED}-queen.ru/kontakty/pm.dll
  • http://{BLOCKED}tyle-shop.ru/basket/pm.dll

Trend Micro detects the dowloaded file as:

  • TSPY_FAREIT.YYSVN

Other Details

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

  • api.ipify.org

It gathers the following information and reports it to its servers:

  • OS Version
  • IP Address
  • Machine GUID

    The information are posted to the server in the following format: GUID={machine guid}&BUILD=&IP={IP address}&TYPE=1&WIN={OS version}

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

12.606.09

FIRST VSAPI PATTERN DATE:

22 Jun 2016

VSAPI OPR PATTERN File:

12.607.00

VSAPI OPR PATTERN Date:

23 Jun 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

Identify and terminate files detected as BKDR_HANCITOR.B

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 4

Remove the malware/grayware file that dropped/downloaded BKDR_HANCITOR.B. (Note: Please skip this step if the threat(s) listed below have already been removed.)

     
    • W2KM_HANCITOR.B

Step 5

Remove the malware/grayware file dropped/downloaded by BKDR_HANCITOR.B. (Note: Please skip this step if the threat(s) listed below have already been removed.)

    • TSPY_FAREIT.YYSVN

Step 6

Scan your computer with your Trend Micro product to delete files detected as BKDR_HANCITOR.B. 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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