General

  • Target
    MasonService.pif
  • Size 2.6MB
  • Sample260718-14f8ssd17l
  • SHA256 9f7bf14ba4ebd047fe0382abd5d411575f137327faf6aa022f4fa3128291537a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      MasonService.pif
    • Size 2.6MB
    • SHA256 9f7bf14ba4ebd047fe0382abd5d411575f137327faf6aa022f4fa3128291537a
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects DonutLoader

    • Detects Umbral payload

    • Family: DonutLoader

      DonutLoader is a position-independent code that enables in-memory execution of VBScript, JScript, EXE, DLL files and dotNET assemblies.

    • Family: Umbral

      Umbral stealer is an open-source modular stealer written in C#.

    • Checks computer location settings

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

    • Creates new service(s)

    • Executes dropped EXE

    • Stops running service(s)

    • 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.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v16

Tasks