Analysis by: Byron Jon Gelera
ALIASES:

TrojanDownloader:O97M/Donoff (Microsoft); Trojan-Downloader.MSWord.Inject.g (Kaspersky)

 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: 207,872 bytes
File Type: DOC
Memory Resident: No
Initial Samples Received Date: 01 Feb 2017

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.

Other Details

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

  • http://api.ipify.org/

It connects to the following possibly malicious URL:

  • http://{BLOCKED}aso.com/ls5/forum/php

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 13.194.02
FIRST VSAPI PATTERN DATE: 01 Feb 2017
VSAPI OPR PATTERN File: 13.195.00
VSAPI OPR PATTERN Date: 02 Feb 2017

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

Restart in Safe Mode

[ Learn More ]

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as W2KM_HANCITOR.YYSXK. 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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