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TROJ_XAMALA.A

March 26, 2018
 ALIASES:

Trojan:Powershell/Inject (Microsoft)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

5,108 bytes

File Type:

PS1

Memory Resident:

Yes

Initial Samples Received Date:

24 Mar 2018

Payload:

Collects system information

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Information Theft

This Trojan gathers the following data:

  • Username
  • Running Process Name
  • Parent Process Name
  • 32-bit or 64-bit machine

Other Details

This Trojan connects to the following website to send and receive information:

  • http://{BLOCKED}.{BLOCKED}s.net/i.php

It does the following:

  • Checks for one of the following strings on each item and malware terminates itself if one is found:
    • 1. Running processes:
      • "fshoster*"
      • "fsorsp*"
      • "avp*"
      • "dwengine*"
    • 2. Services:
      • "fshoster*"
      • "monitor*"
      • "zabbix*"
      • "BGS_SDService*"
      • "NAGIOS*"
      • "SolarWinds*"
      • "APPOPTICS*"
      • "Anturis*"
      • "dr.web*"
      • "Bitdefender*"
      • "QualysAgent*"
    • 3. Service Display Name:
      • "*zabbix*"
      • "*BGS_SDService*"
      • "*NAGIOS*"
      • "*SolarWinds*"
      • "*APPOPTICS*"
      • "*Anturis*"
      • "*dr.web*"
      • "*F-Secure*"
      • "*Bitdefender*"
  • It executes a set of codes obtained from its C&C.

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.148.05

FIRST VSAPI PATTERN DATE:

24 Mar 2018

VSAPI OPR PATTERN File:

14.149.00

VSAPI OPR PATTERN Date:

25 Mar 2018

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 TROJ_XAMALA.A

[ 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

Scan your computer with your Trend Micro product to delete files detected as TROJ_XAMALA.A. 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 the following Trend Micro Support pages for more information:


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