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General

  • Target

    DCRatBuild.exe

  • Size

    1.7MB

  • Sample

    240526-re9z5sha3x

  • MD5

    2b8c0e5a38a065f3dadb659cf1e71bc8

  • SHA1

    314cc5b791911185d67c6bc558fe8e376f2b83f4

  • SHA256

    5da69a712a8b80d139165692c4fa4c002370e609bb1b5a4a22e2abb55f7571ca

  • SHA512

    fd20f911e02122f9d8b1b15688455799d66377be4dccfde6b7e6fb41748bc3342b889984697d96086c9ccd35c945f5089ed5ce3fb18e3808da61e261b09298d4

  • SSDEEP

    24576:U2G/nvxW3Ww0tBm1k+lGhdCg0MWe0dZ1roO+Lftnln/DQhwdReG8+wnoSHIPlr:UbA30BGkPQgqdLYFsAReGUhol

Malware Config

Targets

    • Target

      DCRatBuild.exe

    • Size

      1.7MB

    • MD5

      2b8c0e5a38a065f3dadb659cf1e71bc8

    • SHA1

      314cc5b791911185d67c6bc558fe8e376f2b83f4

    • SHA256

      5da69a712a8b80d139165692c4fa4c002370e609bb1b5a4a22e2abb55f7571ca

    • SHA512

      fd20f911e02122f9d8b1b15688455799d66377be4dccfde6b7e6fb41748bc3342b889984697d96086c9ccd35c945f5089ed5ce3fb18e3808da61e261b09298d4

    • SSDEEP

      24576:U2G/nvxW3Ww0tBm1k+lGhdCg0MWe0dZ1roO+Lftnln/DQhwdReG8+wnoSHIPlr:UbA30BGkPQgqdLYFsAReGUhol

    • 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

    • Loads dropped DLL

    • Checks whether UAC is enabled

MITRE ATT&CK Enterprise v15

Tasks