Threat Encyclopedia

BKDR_FORSHARE.A

Publish date: August 21, 2017

ANALYSIS BY

Nikko Tamana


ALIASES:

FORSHARE

PLATFORM:

Windows

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

  • Threat Type:Backdoor

  • Destructiveness:No

  • Encrypted: No

  • In the wild: Yes

OVERVIEW

TECHNICAL DETAILS

SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.572.08

FIRST VSAPI PATTERN DATE:

04 Aug 2017

VSAPI OPR PATTERN File:

13.573.00

VSAPI OPR PATTERN Date:

05 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

Scan your computer with your Trend Micro product to clean files detected as BKDR_FORSHARE.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.

NOTES:

Deleting Malicious Script

To delete the malicious script created by this malware using WMI Command-line Tool:

  • Open a WMI command-line. To do this, click Start>Run, type WMIC in the text box provided, then press Enter.
  • Type the following on the command-line tool and delete the malicious event consumer: /namespace:\\root\subscription PATH __EventConsumer delete
  • Press Y and Enter when prompted to delete the following, press N and enter if other values are seen: \\{computer name}\\ROOT\subscription:ActiveScriptEventConsumer.Name="fuckyoumm2_consumer"
  • Type the following on the command-line tool and delete the event filter: /namespace:\\root\subscription PATH __EventFilter delete
  • Press Y and Enter when prompted to delete the following, press N and enter if other values are seen: \\{computer name}\\ROOT\subscription:__EventFilter.Name="fuckyoumm2_filter"
  • Type the following on the command-line tool and delete the event timer instruction: /namespace:\\root\subscription PATH __TimerInstruction delete
  • Press Y and Enter when prompted to delete the following, press N and enter if other values are seen: \\{computer name}\\ROOT\subscription:__TimerInstruction.TimerId="fuckyoumm2_itimer"
  • Type the following on the command-line tool and delete the FiltertoConsumerBinding: /namespace:\\root\subscription PATH __FilterToConsumerBinding delete
  • Press Y and Enter when prompted to delete the following, press N and enter if other values are seen: \\{computer name}\\ROOT\subscription:__FilterToConsumerBinding.Consumer="\\\\.\\root\\subscription:ActiveScriptEventConsumer.Name="fuckyoumm2_consumer"consumer\\.\root\subscription:__EventFilter.Name="fuckyoumm2_filter"filter /c
  • Type quit or exit to close the command-line tool.


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