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Ransom_KARMA.E

May 02, 2017
 ALIASES:

RDN/Ransom (McAfee); Trojan-Ransom.Win32.Agent.aaau (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse Ransomer.MSP (AVG)

 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan 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:

196,248 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 May 2017

Arrival Details

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

Dropping Routine

This Trojan drops the following files:

  • %System Root%\pchelper.xml
  • %System Root%\xRun.vbs
  • %System Root%\updatehelper.vbs

(Note: %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

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

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System Root%\pchelper.xml
  • %System Root%\xRun.vbs
  • %System Root%\updatehelper.vbs

Step 3

Scan your computer with your Trend Micro product to delete files detected as Ransom_KARMA.E. 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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