General

  • Target

    6689bd9a5c795eedc631e5fbb850b7ff.exe

  • Size

    1.5MB

  • Sample

    241210-wcwf7awqhj

  • MD5

    6689bd9a5c795eedc631e5fbb850b7ff

  • SHA1

    b63d8e25d4eb9abea3ed0f7867f70db2ab18cba2

  • SHA256

    cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b

  • SHA512

    ff51ccd8918344bb0439a4d9e39394383bff2196496d778db9a3d2862479e55f1bf59c7d467ff055c721231cb592c3c7ded63c5af28a3f9552dc6421dd1151bf

  • SSDEEP

    24576:K17t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWg:KBt7R0wJ4L5Uw5lCCyG31oIPmg

Malware Config

Targets

    • Target

      6689bd9a5c795eedc631e5fbb850b7ff.exe

    • Size

      1.5MB

    • MD5

      6689bd9a5c795eedc631e5fbb850b7ff

    • SHA1

      b63d8e25d4eb9abea3ed0f7867f70db2ab18cba2

    • SHA256

      cb4626ad921c63113e18c3aefb109f70c8e334089871133ea675d62d836d810b

    • SHA512

      ff51ccd8918344bb0439a4d9e39394383bff2196496d778db9a3d2862479e55f1bf59c7d467ff055c721231cb592c3c7ded63c5af28a3f9552dc6421dd1151bf

    • SSDEEP

      24576:K17t7ROjwJqMAVS2hEijP79eAPkavlCCyYcBoZ11q8UuZPt5PsuWg:KBt7R0wJ4L5Uw5lCCyG31oIPmg

    • 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.

    • 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

    • Adds Run key to start application

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks