Analysis by: Thea Patrice Tajonera
ALIASES:

Trojan.Win32.Phantomnet.a (KASPERSKY); Trojan:Win32/Malgent!MSR (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • 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: 149,504 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 28 Dec 2020

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 mutexes to ensure that only one of its copies runs at any one time:

  • Global\GlobalAcprotectMutex

Information Theft

This Trojan gathers the following data:

  • Computer DNS Domain
  • OS Version
  • Machine Language Identifier
  • AV Products
  • Hostname/IP Address
  • IE Proxy Configuration
  • NTLM Hashes
  • Active Sessions

Other Details

This Trojan does the following:

  • It tries to access the following IPs/URLs:
    • {BLOCKED}.{BLOCKED}.150.217:{BLOCKED}
    • http://:0/{NTLM HASH}
    • http://{random characters}/
  • It checks the current date and terminates itself if the date is:
    • 2021-07-20

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 16.444.02
FIRST VSAPI PATTERN DATE: 29 Dec 2020
VSAPI OPR PATTERN File: 16.445.00
VSAPI OPR PATTERN Date: 30 Dec 2020

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

Restart in Safe Mode

[ Learn More ]

Step 3

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Trojan.Win32.PHANTOMNET.YANL-A. 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 this Knowledge Base page for more information.

Step 4

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.PHANTOMNET.YANL-A. 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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