General

  • Target

    DCRatBuild.exe

  • Size

    1.1MB

  • Sample

    240724-sszl1asgrm

  • MD5

    aa17d6c29796bf966f69f471f3a0056f

  • SHA1

    c88deff63da3aefcb9aa7d9759a7774b133052b5

  • SHA256

    2bdbb0fb2f4390a0333e3c484f14b93fbea565008f4bf76bbb3499db2f8a1c2e

  • SHA512

    0201700061c30d2bea75e2d5ee6d8c7611bf7fc93fd7c2e5be3fd17385e6a5a08a61c93828e99d15719abc7adfdd1b44500fcbe99081a17c52c8b4c669569c4e

  • SSDEEP

    24576:u2G/nvxW3WieCPL2sapNSx9AdV6p7RBnjkr+F:ubA3jjta49AiV3F

Malware Config

Targets

    • Target

      DCRatBuild.exe

    • Size

      1.1MB

    • MD5

      aa17d6c29796bf966f69f471f3a0056f

    • SHA1

      c88deff63da3aefcb9aa7d9759a7774b133052b5

    • SHA256

      2bdbb0fb2f4390a0333e3c484f14b93fbea565008f4bf76bbb3499db2f8a1c2e

    • SHA512

      0201700061c30d2bea75e2d5ee6d8c7611bf7fc93fd7c2e5be3fd17385e6a5a08a61c93828e99d15719abc7adfdd1b44500fcbe99081a17c52c8b4c669569c4e

    • SSDEEP

      24576:u2G/nvxW3WieCPL2sapNSx9AdV6p7RBnjkr+F:ubA3jjta49AiV3F

    • DcRat

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

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks