Analysis by: Rommel Abraham Joven
ALIASES:

Troj/JavaJar-E(Sophos); Java/Agent.R(ESET); Trojan.Java.Agent.dt(Kaspersky)

 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: 39,923 bytes
File Type: JAR
Memory Resident: No
Initial Samples Received Date: 02 Jun 2015

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.

Download Routine

This Trojan saves the files it downloads using the following names:

  • %Temp%\{random numbers}.jar

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

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}.{BLOCKED}.3.250/downloads/QRat-agent.jar
  • http://www.{BLOCKED}se.com/downloads/QRat-agent.jar
  • http://{BLOCKED}se.com/downloads/QRat-agent.jar