General

  • Target

    start.bat

  • Size

    3.0MB

  • Sample

    240723-y1zvmawdlk

  • MD5

    75ccd36ede458c2ef9ee45ba7739dfc5

  • SHA1

    01fbc42242dedb80da16c1532dc2afa657ef4fbe

  • SHA256

    307a5c2cb2a8adee62e9497bb7d95092849d7591ea3519984ddfa8e0318a86f9

  • SHA512

    474bdb90fcab975223db81be9197a34748a54861d1f8433f580de3b2b7ea21e9133b2922ac9ee433593e097f90e0e18f85ad585ec3fb99c323dc3a8c94a91090

  • SSDEEP

    49152:ubA3j6Y+EAoXPmkgXzisiPzzGtM5USZzjzAzYfr4rJUkNBMX6Nbl:ubFY+eXnOmpnGK5jRIJUqi+l

Malware Config

Targets

    • Target

      start.bat

    • Size

      3.0MB

    • MD5

      75ccd36ede458c2ef9ee45ba7739dfc5

    • SHA1

      01fbc42242dedb80da16c1532dc2afa657ef4fbe

    • SHA256

      307a5c2cb2a8adee62e9497bb7d95092849d7591ea3519984ddfa8e0318a86f9

    • SHA512

      474bdb90fcab975223db81be9197a34748a54861d1f8433f580de3b2b7ea21e9133b2922ac9ee433593e097f90e0e18f85ad585ec3fb99c323dc3a8c94a91090

    • SSDEEP

      49152:ubA3j6Y+EAoXPmkgXzisiPzzGtM5USZzjzAzYfr4rJUkNBMX6Nbl:ubFY+eXnOmpnGK5jRIJUqi+l

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks