General

  • Target

    https://anonfiles.com/P2d6m03dof/PCPS_exe

  • Sample

    230402-wlq8tsba4v

Malware Config

Targets

    • Target

      https://anonfiles.com/P2d6m03dof/PCPS_exe

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar payload

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Registers COM server for autorun

    • Adds Run key to start application

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

2
T1060

Bootkit

1
T1067

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

6
T1012

System Information Discovery

6
T1082

Peripheral Device Discovery

2
T1120

Tasks