General

  • Target

    18cc13c1471ee634a087a1562dd58e848bb37077043150bd28cc334fff5ce0c3

  • Size

    27KB

  • Sample

    221106-llkqyaeab4

  • MD5

    1932bdb6062dfa590b4ab9da45cd9bb0

  • SHA1

    e20891fb56e40ff49feb9c8183329386ed4a0c98

  • SHA256

    18cc13c1471ee634a087a1562dd58e848bb37077043150bd28cc334fff5ce0c3

  • SHA512

    1626011f178d94adf13a75abe6a46da4144abe6fd8e9335b41bef583e331533847a05b05524d8ea6e290b93435567ad74fd6eda85f91633365ba39db7a414298

  • SSDEEP

    768:rntDssLlSB16cM7lVO5HrttXntC9yoYf:rnRLl08/cHrtg+

Malware Config

Extracted

Family

joker

C2

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

Targets

    • Target

      18cc13c1471ee634a087a1562dd58e848bb37077043150bd28cc334fff5ce0c3

    • Size

      27KB

    • MD5

      1932bdb6062dfa590b4ab9da45cd9bb0

    • SHA1

      e20891fb56e40ff49feb9c8183329386ed4a0c98

    • SHA256

      18cc13c1471ee634a087a1562dd58e848bb37077043150bd28cc334fff5ce0c3

    • SHA512

      1626011f178d94adf13a75abe6a46da4144abe6fd8e9335b41bef583e331533847a05b05524d8ea6e290b93435567ad74fd6eda85f91633365ba39db7a414298

    • SSDEEP

      768:rntDssLlSB16cM7lVO5HrttXntC9yoYf:rnRLl08/cHrtg+

    • 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

    • 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)

    • 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