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Backdoor.Win32.PATPOOPY.AA

July 03, 2019
 Analysis by: Jay Garcia
 ALIASES:

Backdoor:Win32/Patpoopy.A (Microsoft); Trojan.Win64.Shelma.azu (Kaspersky)

 PLATFORM:

Windows

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Downloaded from the Internet


This Backdoor 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 file infection routine.

It does not have any propagation routine.

  TECHNICAL DETAILS

File Size:

4,188,160 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

27 Jun 2019

Payload:

Connects to URLs/IPs

Arrival Details

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

Infection Points

This Backdoor does not have any file infection routine.

Propagation

This Backdoor does not have any propagation routine.

Backdoor Routine

This Backdoor connects to the following URL(s) to send and receive commands from a remote malicious user:

  • {BLOCKED}.{BLOCKED}.0.17:4444

Rootkit Capabilities

This Backdoor does not have rootkit capabilities.

Other Details

This Backdoor does the following:

  • This backdoor is capable of the following:
    • List/Copy/Create/Delete Directories/Files
    • List/Copy/Create/Delete Registry Keys/Values
    • Remote Desktop
    • Execute Shell Commands
    • List Terminal Sessions
    • List Valid Drives in the system
    • List/Kill processes
    • Enable/Disable rdp connection
    • Zip/Unzip files
    • Execute Remote Commands
    • List Interfaces
    • Perform Get/Post requests
    • List Services
    • Retrieve Credentials from memory
    • Keylog
    • Log mouse clicks
    • Take a Screenshot
    • Upload/Download a file/directory from a remote system
    • Record sound with mic
    • Take a webcam snap
    • Lock the screen
    • Run a tcp port scan
    • Show a custom message box
    • Execute mimikatz

It does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.200.04

FIRST VSAPI PATTERN DATE:

27 Jun 2019

VSAPI OPR PATTERN File:

15.201.00

VSAPI OPR PATTERN Date:

28 Jun 2019

Step 1

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 2

Identify and terminate files detected as Backdoor.Win32.PATPOOPY.AA

[ Learn More ]
  1. Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
  2. If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
  3. If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.

Step 3

Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.PATPOOPY.AA. 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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