HackTool.MSIL.SharpStay.A

 Analysis by: Leidryn Saludez

 ALIASES:

Win32:BackdoorX-gen [Trj] (AVAST)

 PLATFORM:

Windows

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

  • Threat Type: Hacking Tool

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet, Dropped by other malware

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

It does not have any propagation routine.

It does not have any backdoor routine.

It does not have any information-stealing capability.

  TECHNICAL DETAILS

File Size:

57,856 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

03 Sep 2024

Arrival Details

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

Propagation

This Hacking Tool does not have any propagation routine.

Backdoor Routine

This Hacking Tool does not have any backdoor routine.

Rootkit Capabilities

This Hacking Tool does not have rootkit capabilities.

Information Theft

This Hacking Tool does not have any information-stealing capability.

Other Details

This Hacking Tool accepts the following parameters:

  • [action=ElevatedRegistryKey] [keyname={name of the key}] [keypath={Registry Key Path}] [command={Registry value}] → Adds a registry key that requires elevated privileges.
  • [action=UserRegistryKey] [keyname={name of the key}] [keypath={Registry Key Path}] [command={Registry value}] → Adds a registry key for the current user.
  • [action=UserInitMprLogonScriptKey] [command={File Path}] → Sets a logon script.
  • [action=ElevatedUserInitKey] [command={File Path}] → Sets a logon script that requires elevated privileges.
  • [action=ScheduledTask] [taskname={Task Name}] [command={File Path}] [runasuser={username}] [triggertype=logon] [author={author}] [description={description}] [logonuser={username}] → Creates a scheduled task.
  • [action=ScheduledTaskAction] [taskname={Task Name}] [command={File Path}] [folder={directory}] [actionid={actionid}] → Adds an action to an existing scheduled task.
  • [action=SchTaskCOMHijack] [clsid={CLSID}] [dllpath={DLL file path}] → Hijacks a COM handler for a scheduled task.
  • [action=CreateService] [servicename={Service Name}] [command={File Path}] → Creates a new service.
  • [action=WMIEventSub] [command={File Path}] [eventname={Event Name}] [attime=startup] → Sets up a WMI event.
  • [action=JunctionFolder] [dllpath={DLL file path}] [guid={GUID}] → Creates a junction folder.
  • [action=NewLNK] [filepath={File Path}] [lnkname={LNK File Name}] [lnktarget={File Path}] [lnkicon={Icon File Path}] → Creates a new shortcut (LNK file).
  • [action=BackdoorLNK] [command={File Path}] [lnkpath={File Path}] → Creates a backdoor shortcut.
  • action=ListTaskNames → Lists the names of scheduled tasks.
  • action=ListScheduledTasks → Lists all scheduled tasks.
  • action=ListRunningServices → Lists all running services.
  • action=GetScheduledTaskCOMHandler → Retrieves COM handlers for scheduled tasks.

NOTES:

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.800

SSAPI PATTERN File:

2.761.00

SSAPI PATTERN Date:

12 Sep 2024

Step 1

Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:

     TROJ.Win32.TRX.XXPE50FFF084

Step 2

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 3

Scan your computer with your Trend Micro product to delete files detected as HackTool.MSIL.SharpStay.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 the following Trend Micro Support pages for more information:


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