Worm.Win32.PEERFRAG.0NA103FL22

March 12, 2025
 Analysis by: Leidryn Saludez
 ALIASES:

Worm.Win32.Peerfrag (IKARUS)

 PLATFORM:

Windows

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

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

  TECHNICAL DETAILS

File Size:

525 bytes

File Type:

INF

Initial Samples Received Date:

07 Mar 2025

Arrival Details

This Worm 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 Worm does the following:

  • Possible dropped by WORM_AUTORN.ZQLA to automatically execute the copies it drops when a user accesses the drives of an affected system.

It requires being executed with a specific argument/parameter, an additional component, or in a specific environment in order to proceed with its intended routine.

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

19.944.04

FIRST VSAPI PATTERN DATE:

07 Mar 2025

VSAPI OPR PATTERN File:

19.945.00

VSAPI OPR PATTERN Date:

08 Mar 2025

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 Worm.Win32.PEERFRAG.0NA103FL22. 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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