General

  • Target

    ba9dc289588ca4917ac19b18f82f9fc8beb266fc46d72648ecd92126a2b2fdd4

  • Size

    26KB

  • Sample

    221107-gstj7sdhgp

  • MD5

    0c23b3dd8893eb37525fc57440beb540

  • SHA1

    ef7bd48e2988fa1ce7f26069e5fc262abf9d04e2

  • SHA256

    ba9dc289588ca4917ac19b18f82f9fc8beb266fc46d72648ecd92126a2b2fdd4

  • SHA512

    051a1e54d9c71ae782116f00b60544a767800acea70002805ba829439618f49dd52d8fe7f49f4aa1c7003ec89c615d301ac95a30feade6b8d33b3769ac18dcb2

  • SSDEEP

    384:rl5Iu0DOSiBuMAjo/BNxf+yOhmwnh2ej0eohDTkVOhvF27z/FUxiWtBlwmRz:rl5JAyg9oNVo2eC9yoYf

Malware Config

Extracted

Family

joker

C2

http://mmtie.oss-cn-hangzhou.aliyuncs.com

Targets

    • Target

      ba9dc289588ca4917ac19b18f82f9fc8beb266fc46d72648ecd92126a2b2fdd4

    • Size

      26KB

    • MD5

      0c23b3dd8893eb37525fc57440beb540

    • SHA1

      ef7bd48e2988fa1ce7f26069e5fc262abf9d04e2

    • SHA256

      ba9dc289588ca4917ac19b18f82f9fc8beb266fc46d72648ecd92126a2b2fdd4

    • SHA512

      051a1e54d9c71ae782116f00b60544a767800acea70002805ba829439618f49dd52d8fe7f49f4aa1c7003ec89c615d301ac95a30feade6b8d33b3769ac18dcb2

    • SSDEEP

      384:rl5Iu0DOSiBuMAjo/BNxf+yOhmwnh2ej0eohDTkVOhvF27z/FUxiWtBlwmRz:rl5JAyg9oNVo2eC9yoYf

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • joker

      Joker is an Android malware that targets billing and SMS fraud.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Registers COM server for autorun

    • Sets file execution options in registry

    • Sets service image path in registry

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

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

    • Loads dropped DLL

    • 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

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v6

Tasks