General

  • Target

    601c80172781fb1a9442666be536e617c330f822f9f4f467d7608f7d81eaeabe.exe

  • Size

    952KB

  • Sample

    250116-fe6f6ssnay

  • MD5

    dd96a30a7bca43cb9a3dcece5b8402a5

  • SHA1

    831695e0af7321506f7a67f5957d0a9b50bd1e77

  • SHA256

    601c80172781fb1a9442666be536e617c330f822f9f4f467d7608f7d81eaeabe

  • SHA512

    854ff9d2b117922b1e7cb8c9e96a1c2a3e6c3746005c2a2f76e4e7d468e245258308342c0ed9e3940eb95a4b2ae0798ddb0bbd2e97a851b8cee370ffcdb9acd8

  • SSDEEP

    24576:W+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX+:x8/KfRTKE

Malware Config

Targets

    • Target

      601c80172781fb1a9442666be536e617c330f822f9f4f467d7608f7d81eaeabe.exe

    • Size

      952KB

    • MD5

      dd96a30a7bca43cb9a3dcece5b8402a5

    • SHA1

      831695e0af7321506f7a67f5957d0a9b50bd1e77

    • SHA256

      601c80172781fb1a9442666be536e617c330f822f9f4f467d7608f7d81eaeabe

    • SHA512

      854ff9d2b117922b1e7cb8c9e96a1c2a3e6c3746005c2a2f76e4e7d468e245258308342c0ed9e3940eb95a4b2ae0798ddb0bbd2e97a851b8cee370ffcdb9acd8

    • SSDEEP

      24576:W+O7F9smBDJwWmIezBLwsHuWbxR4AK5ZJXX+:x8/KfRTKE

    • DcRat

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

    • Dcrat family

    • Modifies WinLogon for persistence

    • 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.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks whether UAC is enabled

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks