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TrojanSpy.Win32.EMOTET.YXCCDZ

March 10, 2022
 Analysis by: Nathaniel Gregory Ragasa
 ALIASES:

TR/AD.Nekark.roylu(ANTIVIR), W32/Emotet.1150!tr(FORTINET)

 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.

It executes then deletes itself afterward.

  TECHNICAL DETAILS

File Size:

630,272 bytes

File Type:

DLL

Memory Resident:

No

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:

  • %System%\{Random Charaters}

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It drops a copy of itself in the following folders using different file names:

  • %System%\{Random Charaters}\{Random Charaters}.{3 Random Characters}

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It adds the following processes:

  • %System%\regsvr32.exe /s %System%\{Random Charaters}\{Random Charaters}.{3 Random Characters}"

(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)

It executes then deletes itself afterward.

Other Details

This Trojan Spy connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.79.26
  • http://{BLOCKED}.{BLOCKED}.48.117
  • http://{BLOCKED}.{BLOCKED}.85.85
  • http://{BLOCKED}.{BLOCKED}.143.207
  • http://{BLOCKED}.{BLOCKED}.84.195
  • http://{BLOCKED}.{BLOCKED}.70.10
  • http://{BLOCKED}.{BLOCKED}.56.116
  • http://{BLOCKED}.{BLOCKED}.128.118
  • http://{BLOCKED}.{BLOCKED}.109.124
  • http://{BLOCKED}.{BLOCKED}.17.99
  • http://{BLOCKED}.{BLOCKED}.106.96
  • http://{BLOCKED}.{BLOCKED}.135.203
  • http://{BLOCKED}.{BLOCKED}.212.216
  • http://{BLOCKED}.{BLOCKED}.54.215
  • http://{BLOCKED}.{BLOCKED}.232.124
  • http://{BLOCKED}.{BLOCKED}.175.63
  • http://{BLOCKED}.{BLOCKED}.221.247
  • http://{BLOCKED}.{BLOCKED}.98.99
  • http://{BLOCKED}.{BLOCKED}.114.231
  • http://{BLOCKED}.{BLOCKED}.83.165
  • http://{BLOCKED}.{BLOCKED}.7.5
  • http://{BLOCKED}.{BLOCKED}.115.99
  • http://{BLOCKED}.{BLOCKED}.193.249
  • http://{BLOCKED}.{BLOCKED}.133.20
  • http://{BLOCKED}.{BLOCKED}.201.2
  • http://{BLOCKED}.{BLOCKED}.140.238
  • http://{BLOCKED}.{BLOCKED}.88.10
  • http://{BLOCKED}.{BLOCKED}.225.142
  • http://{BLOCKED}.{BLOCKED}.222.11
  • http://{BLOCKED}.{BLOCKED}.42.236
  • http://{BLOCKED}.{BLOCKED}.222.101
  • http://{BLOCKED}.{BLOCKED}.40.196
  • http://{BLOCKED}.{BLOCKED}.24.231
  • http://{BLOCKED}.{BLOCKED}.99.3
  • http://{BLOCKED}.{BLOCKED}.232
  • http://{BLOCKED}.{BLOCKED}.59.82
  • http://{BLOCKED}.{BLOCKED}.72.26
  • http://{BLOCKED}.{BLOCKED}.255.201
  • http://{BLOCKED}.{BLOCKED}.98.206
  • http://{BLOCKED}.{BLOCKED}.117.186
  • http://{BLOCKED}.{BLOCKED}.152.127
  • http://{BLOCKED}.{BLOCKED}.158.56
  • http://{BLOCKED}.{BLOCKED}.188.93
  • http://{BLOCKED}.{BLOCKED}.150.244
  • http://{BLOCKED}.{BLOCKED}.201.4
  • http://{BLOCKED}.{BLOCKED}.147.66
  • http://{BLOCKED}.{BLOCKED}.226.206
  • http://{BLOCKED}.{BLOCKED}.82.211

  SOLUTION

Minimum Scan Engine:

9.800

FIRST VSAPI PATTERN FILE:

17.421.00

FIRST VSAPI PATTERN DATE:

04 Mar 2022

VSAPI OPR PATTERN File:

17.422.00

VSAPI OPR PATTERN Date:

05 Mar 2022

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:

     
    • TSPY.Win32.TRX.XXPE50FFF054

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

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 4

Search and delete these files

[ 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.  
  • {Random Charaters}\{Random Charaters}.{3 Random Characters}

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. %System%\{Random Charaters}

Step 6

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.Win32.EMOTET.YXCCDZ. 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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