W2KM_POWLOAD.THJOAAH

October 02, 2018
 Analysis by: Noel Anthony Llimos
 ALIASES:

TrojanDownloader:O97M/Dornoe.A!ams (Microsoft)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

214,528 bytes

File Type:

DOC

Memory Resident:

No

Initial Samples Received Date:

28 Sep 2018

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

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

Download Routine

This Trojan saves the files it downloads using the following names:

  • %Application Data%\{Random Numbers}.exe

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, and 8.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://217.{BLOCKED}231.43/{BLOCKED} .php
  • http://h28129{BLOCKED}2sjshskz.com/MXE/lo{BLOCKED}php?l=yows3.xt2

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

14.538.03

FIRST VSAPI PATTERN DATE:

01 Oct 2018

VSAPI OPR PATTERN File:

14.539.00

VSAPI OPR PATTERN Date:

02 Oct 2018

Scan your computer with your Trend Micro product to delete files detected as W2KM_POWLOAD.THJOAAH. 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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