Analysis by: Wilbert Vidal
ALIASES:

DDoS:Win32/Nitol.B (Microsoft); Win32:Nitol-B [Trj] (Avast)

 PLATFORM:

Windows

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

  • Threat Type: DDoS malware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

It performs denial of service (DoS) attacks on affected systems using specific flooding method(s).

  TECHNICAL DETAILS

File Size: 75,044 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 24 Jan 2018

Arrival Details

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

Denial of Service (DoS) Attack

This DDoS malware performs denial of service (DoS) attacks on affected systems using the following flooding method(s):

  • NBNS flood

  SOLUTION

Minimum Scan Engine: 9.850

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 DDOS_NITOL.WIL. 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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