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What is WdfLoad?

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

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

You may see an entry similar to this in your list of Scheduled Tasks:

warning3.png

How did WdfLoad get on my computer?

Trojans use different methods for distributing themselves. This particular one was bundled with other software.

How do I remove WdfLoad?

Our program Malwarebytes can detect and remove this trojan.
  • Please download Malwarebytes to your desktop.
  • Double-click mb3-setup-consumer-{version}.exe and follow the prompts to install the program.
  • Then click Finish.
  • Once the program has fully updated, select Scan Now on the Dashboard. Or select the Threat Scan from the Scan menu.
  • If another update of the definitions 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 WdfLoad?
  • This PUP creates a randomly named scheduled task that is intended to download and run a cryptocurrency miner. It will also store antivirus software certificates in the "Untrusted" section. You can read here how to check for and, if necessary, remove Scheduled Tasks.
  • If you receive the error Runtime Error 49:120 could not call proc this means the certificates have already been placed.
  • In these cases you should download and run Malwarebytes Anti-Rootkit BETA.
  • After using Malwarebytes Anti-Rootkit BETA, reboot the system and follow the instructions above to run Malwarebytes. Thjis should work now.
How would the full version of Malwarebytes 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 would have protected you against the WdfLoad trojan. It would have warned you before the trojan could install itself, giving you a chance to stop it before it became too late.

 

protection1.png


And we block the connections the second stage of the infection makes:
 

protection2.png


Technical details for experts

Possible signs in FRST logs:
 
 C:\Windows\System32\Tasks\Bix Cup 98 demo

Task: {8D9FA929-30BD-49A0-952A-47B88E8F7079} - System32\Tasks\Bix Cup 98 demo => Rundll32.exe "C:\Program Files\Bix Cup 98 demo\Bix Cup 98 demo.dll",iNCHhtDzdDmt
FirewallRules: [{1874C08B-5604-4F97-A8D1-746D88B73F02}] => (Allow) C:\Windows\system32\rundll32.exe
Alterations made by the installer:
File system details [View: All details] (Selection)
---------------------------------------------------
    Adds the folder C:\Program Files\Bix Cup 98 demo
       Adds the file 1290507146"="6/12/2017 4:11 PM, 60 bytes, A
       Adds the file Bix Cup 98 demo.dll"="6/1/2015 7:31 PM, 2128896 bytes, A
    In the existing folder C:\Users\{username}\Desktop
       (-)(FILE) webfriend2.exe"="6/9/2017 12:02 PM, 1309278 bytes, A
    In the existing folder C:\Windows\System32\Tasks
       Adds the file Bix Cup 98 demo"="6/12/2017 4:13 PM, 16724 bytes, A

Registry details [View: All details] (Selection)
------------------------------------------------
    [HKEY_LOCAL_MACHINE\SOFTWARE\KHT]
       "(Default)"="REG_SZ", ""
Malwarebytes log:
Malwarebytes
www.malwarebytes.com

-Log Details-
Scan Date: 6/12/17
Scan Time: 4:23 PM
Log File: mbamWdfLoad.txt
Administrator: Yes

-Software Information-
Version: 3.1.2.1733
Components Version: 1.0.141
Update Package Version: 1.0.2137
License: Premium

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

-Scan Summary-
Scan Type: Threat Scan
Result: Completed
Objects Scanned: 334575
Threats Detected: 1
Threats Quarantined: 1
Time Elapsed: 1 min, 29 sec

-Scan Options-
Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

-Scan Details-
Process: 0
(No malicious items detected)

Module: 0
(No malicious items detected)

Registry Key: 0
(No malicious items detected)

Registry Value: 0
(No malicious items detected)

Registry Data: 0
(No malicious items detected)

Data Stream: 0
(No malicious items detected)

Folder: 0
(No malicious items detected)

File: 1
Trojan.Wdfload, C:\PROGRAM FILES\BIX CUP 98 DEMO\BIX CUP 98 DEMO.DLL, Delete-on-Reboot, [457], [406241],1.0.2137

Physical Sector: 0
(No malicious items detected)


(end)
As mentioned before the full version of Malwarebytes 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.

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