General

  • Target

    DCRatBuild.exe

  • Size

    1.5MB

  • Sample

    241003-vgtygszclb

  • MD5

    e78270f2dd7fff838367ef6f21dd66b8

  • SHA1

    65f4ce35b3b6ce4ffb0b58c52eaaba0eaee0d967

  • SHA256

    50a2309f0bcc23f11df0aeced7d31f59fd063fe620f463760fbd81cbaff7892b

  • SHA512

    2a952d7b54680be7fbd0e101bae4cc97016f210a0730885e4ed23d21bc06e8722a4210b9050764d42ad73ac53bd6181c591a8fe68ce110556395d62b56f10bd0

  • SSDEEP

    24576:U2G/nvxW3Ww0tvpnEL55c6t87/6Li9lfOaJt6gD5hNjoHTqwGcy8oQzhcL/H:UbA30vpn8P8PTmaPFEHTqw3y8oQ1i/

Malware Config

Targets

    • Target

      DCRatBuild.exe

    • Size

      1.5MB

    • MD5

      e78270f2dd7fff838367ef6f21dd66b8

    • SHA1

      65f4ce35b3b6ce4ffb0b58c52eaaba0eaee0d967

    • SHA256

      50a2309f0bcc23f11df0aeced7d31f59fd063fe620f463760fbd81cbaff7892b

    • SHA512

      2a952d7b54680be7fbd0e101bae4cc97016f210a0730885e4ed23d21bc06e8722a4210b9050764d42ad73ac53bd6181c591a8fe68ce110556395d62b56f10bd0

    • SSDEEP

      24576:U2G/nvxW3Ww0tvpnEL55c6t87/6Li9lfOaJt6gD5hNjoHTqwGcy8oQzhcL/H:UbA30vpn8P8PTmaPFEHTqw3y8oQ1i/

    • 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.

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v15

Tasks