Analysis by: Arvin Roi Macaraeg
ALIASES:

Trojan-PSW.JS.Agent.z(Kaspersky); Trojan:JS/Obfuse(Microsoft); JS/PSW.Agent.G(ESET-NOD32)

 PLATFORM:

Windows

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

  • Threat Type: Trojan Spy

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

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 may be dropped by other malware.

It does not have any propagation routine.

It does not have any backdoor routine.

It logs a user's keystrokes to steal information.

  TECHNICAL DETAILS

File Size: 2,049 bytes
File Type: JS
Memory Resident: No
Initial Samples Received Date: 13 Dec 2019
Payload: Connects to URLs/IPs, Logs keystrokes, Steals information

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.

It may be dropped by the following malware:

Propagation

This Trojan Spy does not have any propagation routine.

Backdoor Routine

This Trojan Spy does not have any backdoor routine.

Rootkit Capabilities

This Trojan Spy does not have rootkit capabilities.

Information Theft

This Trojan Spy attempts to get stored information such as user names, passwords, and hostnames from the following browsers:

  • Google Chrome

It logs a user's keystrokes to steal information.

Drop Points

Stolen information is uploaded to the following websites:

  • http://{BLOCKED}jlcg.x10.bz/{BLOCKED}VjdG9y.php?dXJs={HostName}&cGF0aA={malware directory}&ZGF0YQ={Stolen Information}

Other Details

This Trojan Spy does not exploit any vulnerability.

  SOLUTION

Minimum Scan Engine: 9.850
FIRST VSAPI PATTERN FILE: 15.556.05
FIRST VSAPI PATTERN DATE: 13 Dec 2019
VSAPI OPR PATTERN File: 15.557.00
VSAPI OPR PATTERN Date: 14 Dec 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.FAKECHRO.A. 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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