General

  • Target
    _75087876_022408402-473273394.jpg
  • Size 54KB
  • Sample260831-lr6wcszand
  • SHA256 6139df75c6d1601b94773a0110e77907c6462f8eaa2b04406c09a5813b341521
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Targets

    • Target
      _75087876_022408402-473273394.jpg
    • Size 54KB
    • SHA256 6139df75c6d1601b94773a0110e77907c6462f8eaa2b04406c09a5813b341521
    • MD5 SHA1 SHA512 SSDEEP TLSH
    • Detects KillMBR

    • Family: KillMBR

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

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Contacts third-party web service commonly abused for C2

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

    • Drops desktop.ini file(s)

    • 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 Enterprise v16

Tasks