arrow_back
search
close

RANSOM_ENDER.A

October 16, 2017
 ALIASES:

Artemis!FD04507E1AE5 (McAfee); Trojan Horse (Symantec); Trojan.GenericKD.6095448 (BitDefender)

 PLATFORM:

Windows

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

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Dropped by other malware, Downloaded from the Internet

This Ransomware 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

File Size:

21,448 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

08 Oct 2017

Payload:

Displays windows

Arrival Details

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

Other System Modifications

This Ransomware adds the following registry entries as part of its installation routine:

HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows NT\CurrentVersion\WinLogon
Shell = "%SystemRoot%\EnderRansom.exe"

(Note: The default value data of the said registry entry is "explorer.exe".)

Other Details

This Ransomware displays a pop-up window with the following message:


It does the following:

  • It displays several windows once the following keys are entered:
    • "aRmLgk8wb0WK5q7"
    • "byBkPAa1oZ"
    • "EnderISTheBEST"
      • *
  • It also modifies the registry back to “explorer.exe” once the keys are entered.
  • It does not encrypt any files.

  SOLUTION

Minimum Scan Engine:

9.850

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

Restore these modified registry values

[ Learn More ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\WinLogon
    • From: Shell = "%SystemRoot%\EnderRansom.exe"
      To: Shell = "explorer.exe"

Step 4

Scan your computer with your Trend Micro product to delete files detected as RANSOM_ENDER.A. 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.


Did this description help? Tell us how we did.