Analysis by: Francesca Villasanta
ALIASES:

HEUR:Trojan.Script.Generic (KASPERSKY); TrojanDownloader:O97M/Emotet.RKC!MTB (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: 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.

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

  TECHNICAL DETAILS

File Size: 47,616 bytes
File Type: XLS
Memory Resident: No
Initial Samples Received Date: 10 Jun 2022
Payload: Connects to URLs/IPs

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:

  • %System%\regsvr32.exe /S {Parent of default Excel save path}\wdusx1.ocx
  • %System%\regsvr32.exe /S {Parent of default Excel save path}\wdusx2.ocx
  • %System%\regsvr32.exe /S {Parent of default Excel save path}\wdusx3.ocx

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

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.{BLOCKED}.55/2021/z/
  • http://{BLOCKED}.{BLOCKED}.{BLOCKED}.243/dealspot/SvebxVmFucz/
  • https://{BLOCKED}me.gr/test/SSzbOkk633/

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