General

  • Target
    igvdwmhd.exe
  • Size 13.8MB
  • Sample240805-v98mcatark
  • SHA256 0af8466115f0b1e17bc2d35d10acbbec1a2162bbf497e1acacf2bd17b926f068
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • tofsee

C2
  • vanaheim.cn

  • jotunheim.name

Targets

    • Target
      igvdwmhd.exe
    • Size 13.8MB
    • SHA256 0af8466115f0b1e17bc2d35d10acbbec1a2162bbf497e1acacf2bd17b926f068
    • MD5 SHA1 SHA512 SSDEEP
    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • Creates new service(s)

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks