X2KM_DROPPR.CSYW

November 28, 2017
 Analysis by: Wilbert Vidal
 ALIASES:

TrojanDownloader:O97M/Powdow.A (Microsoft); W97M.Downloader!g18 (Symantec)

 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

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

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

  TECHNICAL DETAILS

File Size:

17,582 bytes

Memory Resident:

No

Initial Samples Received Date:

24 Nov 2017

Arrival Details

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

Backdoor Routine

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

  • Execute arbitrary code

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

  • http://music.{BLOCKED}er.com:8443

As of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.798.06

FIRST VSAPI PATTERN DATE:

22 Nov 2017

VSAPI OPR PATTERN File:

13.799.00

VSAPI OPR PATTERN Date:

23 Nov 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

Scan your computer with your Trend Micro product to delete files detected as X2KM_DROPPR.CSYW. 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:

Step 3

Enable the macro virus protection in Microsoft Office Applications

[ Learn More ]


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