General

  • Target

    4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe

  • Size

    855KB

  • Sample

    241104-csbl6s1cmd

  • MD5

    5780dbae6ac61a88c8d89f216f324146

  • SHA1

    cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc

  • SHA256

    4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605

  • SHA512

    8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920

  • SSDEEP

    12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66

Malware Config

Targets

    • Target

      4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605.exe

    • Size

      855KB

    • MD5

      5780dbae6ac61a88c8d89f216f324146

    • SHA1

      cebcebedc7aaea3a4dd1fbec933cd169bf92e9dc

    • SHA256

      4b1967b04039c9b7a23651043b38c895cca2eb560de30a960368f82549079605

    • SHA512

      8a595384247649e31ef0c69a63243199d224334d75b66fd486a8e6ba0ac3c2b5521e1ead4b64fb9c968c21a4836581dde10e78f36217b62862c40bed2d105920

    • SSDEEP

      12288:I/TnPz84JfpflKH6qHJJMA+7pW3Ari4VVyZC0+1cp9rcDNpTWDTQGCZ6:I/TnzfS6qpJMA+73iE0nTr66

    • 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.

    • DCRat payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks