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[Metallica]

Content is republished with permission from Malwarebytes.

What is NetStream?

The Malwarebytes research team has determined that NetStream is a Trojan.Dropper. These trojans are designed to download other malware.

How do I know if my computer is affected by NetStream?

You may see this warning during install:



and this entry in your list of installed programs:



You may also see some alarms or reports regarding failed connections to the domain exoxylamp.com.

How did NetStream get on my computer?

Trojans use different methods for distributing themselves. This particular one was offered as a PHP editor.

How do I remove NetStream?

Our program Malwarebytes Anti-Malware can detect and remove this trojan.

• Please download Malwarebytes Anti-Malware to your desktop.
• Double-click mbam-setup-{version}.exe and follow the prompts to install the program.
• At the end, be sure a check-mark is placed next to:
  Launch Malwarebytes Anti-Malware
• Then click Finish.
• Once the program has loaded, select Scan Now. Or select the Threat Scan from the Scan menu.
• If an update is available, it will be implemented before the rest of the scanning procedure.
• When the scan is complete, make sure that all Threats are selected, and click Remove Selected.
• Restart your computer when prompted to do so.

Is there anything else I need to do to get rid of NetStream?

• After the reboot you can remove the NetStream 1.0 entry from your list of installed Programs and Features.

How would the full version of Malwarebytes Anti-Malware help protect me?

We hope our application and this guide have helped you eradicate this trojan.

As you can see below the full version of Malwarebytes Anti-Malware would have protected you against the NetStream trojan. It would have warned you before the trojan could install itself, giving you a chance to stop it before it became too late.

Technical details for experts

Possible signs in FRST logs:

 (Microsoft Corporation) C:\Windows\SysWOW64\rundll32.exe
 HKCU\...\Run: [pump64] => rundll32.exe "C:\Users\{username}\AppData\Local\pump64.dll",pump64 <===== ATTENTION
 C:\Users\{username}\AppData\Local\pump64.dll
 C:\Users\{username}\AppData\Local\uninstall.exe
 C:\Users\{username}\AppData\Local\Temp\rein.dll

NetStream 1.0 (HKCU\...\NetStream 1.0) (Version:  - )
FirewallRules: [{F88292C2-4D60-49C3-AE6C-6507FFB632CC}] => (Allow) C:\Windows\system32\rundll32.exe 

Alterations made by the installer:

File system details [View: All details] (Selection)
---------------------------------------------------
    In the existing folder C:\Users\{username}\AppData\Local
       Adds the file pump64.dll"="8/3/2016 5:49 PM, 9728 bytes, A
       Adds the file uninstall.exe"="8/3/2016 5:49 PM, 3072 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
       "pump64"="REG_SZ", "rundll32.exe "C:\Users\{username}\AppData\Local\pump64.dll",pump64"
    [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\NetStream 1.0]
       "DisplayName"="REG_SZ", "NetStream 1.0"
       "UninstallString"="REG_SZ", "C:\Users\{username}\AppData\Local\uninstall.exe"

Malwarebytes Anti-Malware log:

Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 8/3/2016
Scan Time: 6:01 PM
Logfile: mbamNetStream.txt
Administrator: Yes

Version: 2.2.1.1043
Malware Database: v2016.08.03.08
Rootkit Database: v2016.05.27.01
License: Premium
Malware Protection: Disabled
Malicious Website Protection: Enabled
Self-protection: Enabled

OS: Windows 7 Service Pack 1
CPU: x64
File System: NTFS
User: {username}

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 316438
Time Elapsed: 8 min, 30 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Enabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 0
(No malicious items detected)

Modules: 1
Trojan.Bunitu, C:\Users\{username}\AppData\Local\pump64.dll, Delete-on-Reboot, [6a4afb4b8b0f71c518c48fb4fb09a759], 

Registry Keys: 0
(No malicious items detected)

Registry Values: 1
Trojan.Bunitu, HKCU\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN|pump64, rundll32.exe "C:\Users\{username}\AppData\Local\pump64.dll",pump64, Quarantined, [6a4afb4b8b0f71c518c48fb4fb09a759]

Registry Data: 0
(No malicious items detected)

Folders: 0
(No malicious items detected)

Files: 2
Trojan.Bunitu, C:\Users\{username}\AppData\Local\pump64.dll, Delete-on-Reboot, [6a4afb4b8b0f71c518c48fb4fb09a759], 
Trojan.Dropper, C:\Users\{username}\AppData\Local\Temp\rein.dll, Quarantined, [fbb922241d7d6cca82da7ecb8a77847c], 

Physical Sectors: 0
(No malicious items detected)


(end)

As mentioned before the full version of Malwarebytes Anti-Malware could have protected your computer against this threat.
We use different ways of protecting your computer(s):

• Dynamically Blocks Malware Sites & Servers
• Malware Execution Prevention

Save yourself the hassle and get protected.