Analysis by: John Donnie Celestre
ALIASES:

Trojan-Downloader.Win32.Cridex.arq

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan Spy 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: 172,032 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 29 Oct 2019

Arrival Details

This Trojan Spy 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 Trojan Spy does the following:

  • connects to the following URL(s) possibly to send/receive information from a remote actor and/or download component files:
    • n{BLOCKED}rse-yet.local:443
    • ns305620{BLOCKED}-59-60.eu:443
    • flo{BLOCKED}ls.com:3389
    • mb{BLOCKED}air.com:3389
    • vla{BLOCKED}rs.n{BLOCKED}net.rs:691
    • 178.{BLOCKED}.{BLOCKED}.141
    • 37.{BLOCKED}.{BLOCKED}.80
    • 45.{BLOCKED}.{BLOCKED}.150
    • 216.{BLOCKED}.{BLOCKED}.55
    • 69.{BLOCKED}.{BLOCKED}.203
    • 176.{BLOCKED}.{BLOCKED}.96
  • It is a component of Trojan.Win64.DRIDEX.AM which gathers information and injects its code to explorer.exe which is then set to listen on any port.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.462.03
FIRST VSAPI PATTERN DATE: 29 Oct 2019
VSAPI OPR PATTERN File: 15.463.00
VSAPI OPR PATTERN Date: 30 Oct 2019

Step 1

Trend Micro products with the XGen technology detect this malware as

[ Learn More ]
 Troj.Win32.TRX.XXPE50FFF032

Step 2

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.DRIDEX.TIAOABBA. 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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