Analysis by: Henry Alarcon Jr.

 ALIASES:

Trojan-UACByPass.a (McAfee), Trojan:Win32/CryptInject (Microsoft), W32/AntiAV.NIZ!tr (Fortinet)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Canal de infecção: Dropped by other malware

This Trojan may be dropped by other malware.

  TECHNICAL DETAILS

Tipo de compactação: 4,608 bytes
Tipo de arquivo: DLL
Residente na memória: Yes
Data de recebimento das amostras iniciais: 26 Feb 2019

Arrival Details

This Trojan may be dropped by the following malware:

Other Details

This Trojan does the following:

  • To relaunch a process as resource. ← one of component for UAC bypass using PkgMgr->DISM (DLL hijacking).

  SOLUTION

Mecanismo de varredura mínima: 9.850
Primeiro arquivo padrão VSAPI: 14.850.04
Data do lançamento do primeiro padrão VSAPI: 04 Mar 2019
VSAPI OPR Pattern Version: 14.851.00
VSAPI OPR Pattern veröffentlicht am: 05 Mar 2019

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

Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.

Step 3

Restart in Safe Mode

[ Learn More ]

Step 4

Restart in normal mode and scan your computer with your Trend Micro product for files detected as Trojan.Win32.ANTIAV.AB. 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 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.ANTIAV.AB. 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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