Resubmissions

09/03/2026, 03:25

260309-dyyvbsbt7x10

09/03/2026, 03:22

260309-dwv1nagv5p8

09/03/2026, 03:14

260309-drf1yaa19110

09/03/2026, 02:59

260309-dg9v9sf17l8

09/03/2026, 02:57

260309-dfyfvaaz3s10

General

  • Target
    360_F_298288984_8i0PB7s9aWPzi1LeuNGGrnjXkmXRpcZn.jpg
  • Size 21KB
  • Sample260309-dfyfvaaz3s
  • SHA256 777143ae2f0bcd842a4550efe8e33694565bd9858a41e5db6f1e0748acbdc468
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      360_F_298288984_8i0PB7s9aWPzi1LeuNGGrnjXkmXRpcZn.jpg
    • Size 21KB
    • SHA256 777143ae2f0bcd842a4550efe8e33694565bd9858a41e5db6f1e0748acbdc468
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects KillMBR

    • KillMBR

      KillMBR is a trojan that attempts to overwrite the Master Boot Record.

    • Killmbr family

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Contacts third-party web service commonly abused for C2

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

    • Writes to the Master Boot Record (MBR)

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

MITRE ATT&CK Enterprise v16

Tasks