General

  • Target

    aa2108fe86426295731eb3694298cbc94ae8afda23dbe0360e2f2031b8bb11d6N

  • Size

    2.9MB

  • Sample

    241106-rb4c7asarm

  • MD5

    c417e0907ae7dc4abf1909739e415470

  • SHA1

    0c03481d34a1d4c48ab816395b180c741033b9f8

  • SHA256

    aa2108fe86426295731eb3694298cbc94ae8afda23dbe0360e2f2031b8bb11d6

  • SHA512

    4c766dcc28ff26e9523bc349ca23e425affe171a76969b7a7e98d21adf4e447f77959f9aba733c5e88305146c74b52e7c360fc0ea3c50dbd8eb6a5fb3c44ab66

  • SSDEEP

    49152:lfTBVuy0VtNUBslYt04P0GliFkO6Uo67iX0bCLuI9+E8D:l7nL0jCB6q0goyUonuI998D

Malware Config

Targets

    • Target

      aa2108fe86426295731eb3694298cbc94ae8afda23dbe0360e2f2031b8bb11d6N

    • Size

      2.9MB

    • MD5

      c417e0907ae7dc4abf1909739e415470

    • SHA1

      0c03481d34a1d4c48ab816395b180c741033b9f8

    • SHA256

      aa2108fe86426295731eb3694298cbc94ae8afda23dbe0360e2f2031b8bb11d6

    • SHA512

      4c766dcc28ff26e9523bc349ca23e425affe171a76969b7a7e98d21adf4e447f77959f9aba733c5e88305146c74b52e7c360fc0ea3c50dbd8eb6a5fb3c44ab66

    • SSDEEP

      49152:lfTBVuy0VtNUBslYt04P0GliFkO6Uo67iX0bCLuI9+E8D:l7nL0jCB6q0goyUonuI998D

    • DcRat

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

    • Dcrat family

    • 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.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • 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