General

  • Target
    RuntimeBroker.exe
  • Size 31.6MB
  • Sample261029-yr51aaev6y
  • SHA256 3a62ed78497b0ece5c72677afbfbcb7b19458f56367928e26cceabce595fe66f
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      RuntimeBroker.exe
    • Size 31.6MB
    • SHA256 3a62ed78497b0ece5c72677afbfbcb7b19458f56367928e26cceabce595fe66f
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Checks computer location settings

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

    • Executes a file named after a Windows system binary

      The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Adds Run key to start application

    • Contacts third-party web service commonly abused for C2

      Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

    • Looks up external IP address via web service

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

    • Uses WMI to collect hardware manufacturer information

      Uses WMI to read the system manufacturer, model, baseboard or display adapter, which is often used to detect virtual machines and evade sandboxes.

    • Executes a VBScript file via the Windows Script Host.

    • Target
      pysilon.pyc
    • Size 109KB
    • SHA256 1bfcace84f5f15547a5d0c80eb77fc39e0acc02f72392414c35059057aed6401
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10

MITRE ATT&CK Enterprise v16

Tasks