Rewterz Threat Alert – Mobile Cyberespionage Campaign Distributed Through CallerSpy

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.

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.