General

  • Target

    f53c7d5e073dd24cd95288b0aaa2394598858e6e45963fc309317ba422e39b61

  • Size

    32KB

  • Sample

    221107-r82kvscdh8

  • MD5

    0d40d1725cbc53b8b045c47293cfc010

  • SHA1

    34796213b600e3575ac7e0fed05b1158e75747b9

  • SHA256

    f53c7d5e073dd24cd95288b0aaa2394598858e6e45963fc309317ba422e39b61

  • SHA512

    fefd3273a82fb11fc7c19606d5361044aa49bc36b42629f1e95b03441930019c6a27698723702d9ceab859968535191ef07e23417e4e35c869e10b02ffc396f3

  • SSDEEP

    768:rP1WbPH59kgi2fKACIaFleZQWTGBxMLfb41CYR/9m:rtWbZltfjCHwQWT/81L

Malware Config

Extracted

Family

joker

C2

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

Targets

    • Target

      f53c7d5e073dd24cd95288b0aaa2394598858e6e45963fc309317ba422e39b61

    • Size

      32KB

    • MD5

      0d40d1725cbc53b8b045c47293cfc010

    • SHA1

      34796213b600e3575ac7e0fed05b1158e75747b9

    • SHA256

      f53c7d5e073dd24cd95288b0aaa2394598858e6e45963fc309317ba422e39b61

    • SHA512

      fefd3273a82fb11fc7c19606d5361044aa49bc36b42629f1e95b03441930019c6a27698723702d9ceab859968535191ef07e23417e4e35c869e10b02ffc396f3

    • SSDEEP

      768:rP1WbPH59kgi2fKACIaFleZQWTGBxMLfb41CYR/9m:rtWbZltfjCHwQWT/81L

    • 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.

    • Deletes itself

    • 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