arrow_back
search
close

Trojan.W97M.POWLOAD.SMDL

December 18, 2024
 Analysis by: Raymart Christian Yambot
 ALIASES:

TrojanDownloader:O97M/Donoff (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.

  TECHNICAL DETAILS

File Size:

127,616 bytes

File Type:

DOC

Memory Resident:

Yes

Initial Samples Received Date:

27 Dec 2018

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.

Installation

This Trojan adds the following processes:

  • cmd /c %PRogrAmDaTa:~0,1%%ProgRAmData:~9,2% /v: /c "set CBku={Obfuscated Code} FOR %z In {Obfuscated code}
  • CmD /v: /c "set CBku={Obfuscated code} FOR %z In {Obfuscated Code}
  • %System%\cmd.exe /S /D /c" {Obfuscated commands used to connect and download executable file}
  • %System%\cmd.exe /S /D /c" FOR /F "delims=TFSH tokens=1" %J IN ('ftype^|findstr mdFi') DO %J "
  • %System%\cmd.exe /c ftype|findstr mdFi
  • %System%\cmd.exe /S /D /c" ftype"

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

14.714.03

FIRST VSAPI PATTERN DATE:

27 Dec 2018

VSAPI OPR PATTERN File:

14.715.00

VSAPI OPR PATTERN Date:

28 Dec 2018

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 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 Trojan.W97M.POWLOAD.SMDL. 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:


Did this description help? Tell us how we did.