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Rewterz Threat Alert – DeathRansom Attacks Targeting Users
December 3, 2019
Rewterz Threat Alert – Dexphot – A Polymorphic Threat
December 4, 2019

Rewterz Threat Alert – Mobile Cyberespionage Campaign Distributed Through CallerSpy

December 3, 2019

Severity

Medium

Analysis Summary

A new spyware family disguised as chat apps on a phishing website. the apps, which exhibit many cyberespionage behaviors, are initially used for a targeted attack campaign.  http://gooogle[.]press/, which was advertising a chat app called “Chatrious.” Users can download the malicious Android application package (APK) file by clicking the download button indicated on the site. The website became inactive for months after that encounter in May. It came back in October, this time with a different app called “Apex App.” We have identified this as a spyware family that can steal user’s personal information. Trend Micro detects both of the threats as AndroidOS_CallerSpy.HRX.

Figure 1. Screenshots of Chatrious (left) and Apex App (right)

Impact

Exposure of sensitive information

Indicators of Compromise

SHA-256

  • 0c4b08bec1251b1ebc715a7ef1a712cdcb4d37ce0093d88f7fa73b0e05bf7b0e
  • 7cb0eb93de496e2141b6e0541465ca71a84063867381085692885c75aa59cb1b
  • c8e1a702a27309c22728792c64aad4abc14ec2bfad1b30a4f27b8ebc6bcc68ff
  • 38acf26161a2c6429ee40d9b70d8419a9bd00eaa8740d221f943cea3229372dd
  • 3bf85d0aff5ddc0c57e43b879631ee692d98d01f5c964336471f1cdfe0d291f8
  • 8ad18bd8f5d2f1fd9e00211170e8a540ddf7f51618588fab31b4ddd2b

Remediation

Block all threat indicators at your respective controls.

  • Services
    • Asses
      • Compromise Assessment
      • APT Assessment
      • Penetration Testing
      • Secure Architecture Design & Review
      • Red Team Assessment
      • Purple Team Assessment
      • Social Engineering
      • Source Code Review
    • Respond
      • Incident Response
      • Incident Analysis
  • Transform
    • SOC Consultancy
    •     SOC Maturity Assessment
    •     SOC Model Evaluation
    •     SOC Gap Analysis
    •     SIEM Gap Analysis
    •     SIEM Optimization
    •     SOC Content Pack
  • Train
    • Security Awareness and Training
    • Tabletop Exercise
    • Simulated Cyber Attack Exercises
  • Managed Security
    • Managed Security Monitoring
      • Remote SOC
      • Onsite SOC
      • Hybrid SOC
    • Managed Security Services
      • Managed Detection and Response
      • Managed Endpoint Detection and Response
      • Managed Threat Intelligence
      • Managed Threat Hunting
      • Managed Risk-Based SOAR
      • Managed Penetration Testing
  • Solutions
  • Resources
    • Blog
    • Threat Advisory
  • Company
    • About Us
    • Careers
    • Contact
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