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TrojanSpy.Win32.AZORULT.UMA

December 21, 2021
 Analysis by: Maria Emreen Viray
 ALIASES:

Trojan:Win32/Occamy.C3D (MICROSOFT)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan Spy 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:

4,528,904 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

15 Dec 2021

Arrival Details

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

Installation

This Trojan Spy adds the following folders:

  • {Malware Path}\Sandbox
  • {Malware Path}\Sandbox\SketchUp 2020
  • {Malware Path}\Sandbox\SketchUp 2020\roaming
  • {Malware Path}\Sandbox\SketchUp 2020\local
  • {Malware Path}\Sandbox\SketchUp 2020\local\temp

It drops the following files:

  • {Malware Path}\Sandbox\SketchUp 2020\xsandbox.bin.__tmp__
  • {Malware Path}\Sandbox\SketchUp 2020\xsandbox.bin
  • {Malware Path}\Sandbox\SketchUp 2020\roaming\xregistry.bin.__tmp__
  • {Malware Path}\Sandbox\SketchUp 2020\roaming\xregistry.bin

Other Details

This Trojan Spy adds the following registry keys:

HKEY_CURRENT_USER\Software\Spoon

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache\{Random Characters}

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache\{Random Characters}\roaming

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache\{Random Characters}\roaming\
modified

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache\{Random Characters}\roaming\
modified\@HKCU@

HKEY_CURRENT_USER\Software\Spoon\
SandboxCache\{Random Characters}\roaming\
modified\@HKCU@\Environment

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

17.254.05

FIRST VSAPI PATTERN DATE:

15 Dec 2021

VSAPI OPR PATTERN File:

17.255.00

VSAPI OPR PATTERN Date:

16 Dec 2021

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

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

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

 
  • In HKEY_CURRENT_USER\Software\Spoon

Step 4

Search and delete this file

[ Learn More ]
There may be some files 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.
  • {Malware Path}\Sandbox\SketchUp 2020\xsandbox.bin.__tmp__
  • {Malware Path}\Sandbox\SketchUp 2020\xsandbox.bin
  • {Malware Path}\Sandbox\SketchUp 2020\roaming\xregistry.bin.__tmp__
  • {Malware Path}\Sandbox\SketchUp 2020\roaming\xregistry.bin

Step 5

Search and delete this folder

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • {Malware Path}\Sandbox\SketchUp 2020\local\temp
  • {Malware Path}\Sandbox\SketchUp 2020\roaming
  • {Malware Path}\Sandbox\SketchUp 2020\local
  • {Malware Path}\Sandbox\SketchUp 2020
  • {Malware Path}\Sandbox

Step 6

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.AZORULT.UMA. 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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