Analysis by: Wilbert Vidal
ALIASES:

TrojanDownloader:O97M/Donoff (Microsoft); W97M.Downloader (Symantec)

 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.

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

  TECHNICAL DETAILS

File Size: 92,672 bytes
Initial Samples Received Date: 09 Nov 2017

Arrival Details

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

Download Routine

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

  • C:\Users\Public\{6 Random Numbers}.exe

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}t-britv.ru/UamuKMpu

It does the following:

  • It executes the downloaded code from the URL using powershell.

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