Analysis by: Maria Emreen Viray
 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 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: 145,920 bytes
File Type: XLS
Memory Resident: No
Initial Samples Received Date: 24 Mar 2022

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:

  • %Windows%\SysWow64\regsvr32.exe -s {Parent of default Excel save path}\lnau.dll

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

Download Routine

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

  • {Parent of default Excel save path}\lnau.dll

Other Details

This Trojan connects to the following possibly malicious URL:

  • https://{BLOCKED}.com/css/NHGyTTCK/
  • https://{BLOCKED}adlink.com/brochure/D/
  • https://{BLOCKED}m.net/error/5xzXdD/
  • https://ftp.{BLOCKED}.com/wp-admin/Pzgr8qexn/
  • https://{BLOCKED}e.pereezd-24.com/1/uEibuIqhZi4oua/