TrojanSpy.JS.NEMUCOD.BONING

July 23, 2019
 Analysis by: Noel Anthony Llimos
 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: Yes

  • Encrypted: Yes

  • 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. However, as of this writing, the said sites are inaccessible.

It executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

666,905 bytes

File Type:

JS

Memory Resident:

Yes

Initial Samples Received Date:

19 Jul 2019

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.

However, as of this writing, the said sites are inaccessible.

Backdoor Routine

This Trojan Spy executes the following commands from a remote malicious user:

  • Update Itself/Replace Initial Script
  • Execute File

It connects to the following websites to send and receive information:

  • https: //185.{BLOCKED}.82.15/ho{BLOCKED}le/c644.php

Information Theft

This Trojan Spy gathers the following data:

  • Process List
  • User Name
  • Domain Name
  • OS Version

Other Details

This Trojan Spy does the following:

  • If it fails to download a file from its C&C Server, it locates for files with the following extensions in shared and removable drives, deletes the file and replaces the deleted file with a copy of itself:
    • .doc
    • .xls
    • .pdf
    • .rtf
    • .txt
    • .pub
    • .odt
    • .ods
    • .odp
    • .odm
    • .odc
    • .odb
  • It terminates itself if it satisfies any of the following conditions.
    • Any of the following processes are found in the affected system’s memory:
      • anti - virus.EXE
      • lordPE.exe
      • B.exe
      • iexplore.exe
      • Proxifier.exe
      • ctfmon.exe
      • AgentSimulator.exe
      • VzService.exe
      • VBoxTray.exe
      • gemu - ga.exe
      • BennyDB.exe
      • windanr.exe
    • Any of the following debugging tools are found in the system:
      • Procmon
      • Wireshark
      • ProcessHacker
      • vmtoolsd
      • VBoxService
      • ImmunityDebugger
      • BehaviorDumper
      • PROCMON
      • procexp
      • tcpdump
      • FrzState2k
      • DFLocker64
      • vmware
      • LOGSystem.Agent.Service.exe
    • Any of the following strings are existing in the environment that it is executed:
      • VmRemoteGuest
      • SystemIT | admin
      • WIN7 - TRAPS
      • Emily
      • milozs
      • Johnson
      • HAPUBWS
      • Peter Wilson
      • Hong Lee

    It deletes itself after execution.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.244.05

FIRST VSAPI PATTERN DATE:

19 Jul 2019

VSAPI OPR PATTERN File:

15.245.00

VSAPI OPR PATTERN Date:

20 Jul 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

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

Scan your computer with your Trend Micro product to delete files detected as TrojanSpy.JS.NEMUCOD.BONING. 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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