Threat Encyclopedia

TSPY_EMOTET.AUSJLA

Publish date: November 21, 2017

ALIASES:

Trojan.Emotet (Malwarebytes), DDOS.Botnet.Zyklon (Ikarus), Troj/Emotet-FL (Sophos AV)

PLATFORM:

Windows

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

  • Threat Type:Trojan Spy

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW

Infection Channel:

Downloaded from the Internet

This information stealing malware arrives as spam spoofing an invoice or payment notification. If the user clicks the URL in the email, it executes a PowerShell command that downloads EMOTET. It then gathers information on the affected system and sends the information to a C&C server to determine the payload to be sent to the affected system. One of the possible payloads includes DRIDEX, a popular banking trojan.

This Trojan Spy may be downloaded by other malware/grayware from remote sites.

It connects to certain websites to send and receive information. It deletes the initially executed copy of itself.

TECHNICAL DETAILS

SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.614.05

FIRST VSAPI PATTERN DATE:

24 Aug 2017

VSAPI OPR PATTERN File:

13.615.00

VSAPI OPR PATTERN Date:

25 Aug 2017

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.614.05

FIRST VSAPI PATTERN DATE:

24 Aug 2017

VSAPI OPR PATTERN File:

13.615.00

VSAPI OPR PATTERN Date:

25 Aug 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 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, and then delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.


  • In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services
    • {string 1}{string 2}

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.


 
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • {string 1}{string 2} = "%AppDataLocal%\Microsoft\Windows\{string 1}{string 2}.exe

Step 5

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_EMOTET.AUSJLA. 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.


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