General

  • Target

    a457dde0fa790f976b97320fbfd4bc97.exe

  • Size

    1.6MB

  • Sample

    231204-v2j9sadf4s

  • MD5

    a457dde0fa790f976b97320fbfd4bc97

  • SHA1

    97797ffd490394755c43e5c1eaedac63149444d3

  • SHA256

    4e7f4dfcec36aff9c423f49609a7ef86bab29a0e9c914579f76c3840288091ee

  • SHA512

    56feea8d2a68ac0abe1206e5c1b04f459f16bcaa5d1d76c483c411c0bb18bc5fc7e9827eae64efe96ef8c4f638b140bb94cca62600cfac67eddcc64430307b2e

  • SSDEEP

    49152:7mu6MtJSShwzalGidhn+7whDBXBSL8Bl4:ea6cGidhXDBxSo4

Malware Config

Targets

    • Target

      a457dde0fa790f976b97320fbfd4bc97.exe

    • Size

      1.6MB

    • MD5

      a457dde0fa790f976b97320fbfd4bc97

    • SHA1

      97797ffd490394755c43e5c1eaedac63149444d3

    • SHA256

      4e7f4dfcec36aff9c423f49609a7ef86bab29a0e9c914579f76c3840288091ee

    • SHA512

      56feea8d2a68ac0abe1206e5c1b04f459f16bcaa5d1d76c483c411c0bb18bc5fc7e9827eae64efe96ef8c4f638b140bb94cca62600cfac67eddcc64430307b2e

    • SSDEEP

      49152:7mu6MtJSShwzalGidhn+7whDBXBSL8Bl4:ea6cGidhXDBxSo4

    • DcRat

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

    • Modifies WinLogon for persistence

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks