General

  • Target

    ea5c9b5d0f6dd7bddd595bd6bfda7d48fe13656bf4a72f5ecfbd38cdd80cd9fb

  • Size

    2.7MB

  • Sample

    221125-zeyk4sdf53

  • MD5

    6b92220ecb897f64f85fb639d8feb662

  • SHA1

    8b349fa533a48392067fdc0bf70a9829cacafc2f

  • SHA256

    ea5c9b5d0f6dd7bddd595bd6bfda7d48fe13656bf4a72f5ecfbd38cdd80cd9fb

  • SHA512

    7f541fe1cbbed200eeae10b867b0da1973c250da7603c4074429aaca614f05a5ef64b47bd096e53a092cda9f816cf6c8d22cea48d3d81e2313c908128661f21b

  • SSDEEP

    49152:SveeVKc3nNWt+YLRjvMIpnlhS9fqJOM8y6lFMBPOCL5qKzpQA:4eebn2FjNlhS9CJOM62JqSN

Malware Config

Targets

    • Target

      HOOK.DLL

    • Size

      58KB

    • MD5

      7e6be94c4023d1560f3678db2579b41f

    • SHA1

      b4b5fa3fbf074a6da92afbb8d2bc632683ca74ec

    • SHA256

      77c2ad1ebd183d1d94b68def677fd0691a4a6869f521294ff7619fcfe5fa5fbb

    • SHA512

      3eaa31f8b25d45ac62637c93a160d90ea49b9487c65d88c94cfd29b6cafed3375ffcc22a459c173792f30639b8cad7da70a9044a4ab959c3ace56853aec35a8e

    • SSDEEP

      768:PV1qkEM1uCxCrOMCMZWw3ZNZNYTdj8mNa2IJrmmSWmkvTSnno4KMpQQu8snP/SVJ:d1qkE+CjfNZN4dj8XxOuMbu73SVXpZZ

    Score
    1/10
    • Target

      STUDENT.exe

    • Size

      1.5MB

    • MD5

      2c0525fe09c3fc8f361664e9cec1cf39

    • SHA1

      c8e060bafd2911d2faeaa7c41a40899008e5f401

    • SHA256

      97af7e67acd9a53063171f2db69f43b56510c511c8f9486582a1f94b30addcbf

    • SHA512

      ecf53dc361e0fd1d124b5178bb43de4174bf17c1bda8a50917bca9f1f4b584f1a60ef75e41f3a21e3d762725e96346839a49ae9bfae878f84ee68ee08c84e2bf

    • SSDEEP

      24576:aQKgRLTkqhovL+xMSKLpqUbUUtfVD0LVAzDwQnQxxAK:PRiY/+UKfGVA4QnQxxA

    Score
    6/10
    • Target

      TEACHER.exe

    • Size

      4.2MB

    • MD5

      2e461836020fe8defb2e8c83efb2891c

    • SHA1

      f935b340258da2ed05a53c7226ea38fbf5028999

    • SHA256

      a844d8410fe6c329c8be5b74fadbf55bb2337660abab472e5fa067b3452ef5b3

    • SHA512

      07450c02252e5c03a51d21847887c34e85c2d0d15331d5c38623e9e1827a078f17ad1f1daec2e8acce686328b9c4e5760f8b4a93b2cb2715133df8f02606a418

    • SSDEEP

      49152:MaixCNNWzyGLYjvMWfHCpv0rscgKCjmZUYD5HT3zWAB4vQnQxxA0k:MQN6UjXK6wjjwmAUQQfDk

    • Blocklisted process makes network request

    • Drops file in Drivers directory

    • Executes dropped EXE

    • Sets service image path in registry

    • Drops startup file

    • 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.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • 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

    • Target

      help.chm

    • Size

      60KB

    • MD5

      3ecd3de0e53fd46588ee323e76f94958

    • SHA1

      4cab034bfae4a30000f03acd976f41eaa5558cb1

    • SHA256

      a6bac1795813694bf3b080f2ed3c4bc3dee8f8da48147a81e89aa3851ce2235f

    • SHA512

      f3c23a9de97f85e3b5fe392523ea06741670aae46806d8bf1ebe047c9b28a667cbda4cc77a589c2e929eb2b52453aa20a0b515d3bd14218ed042fa44a1323db0

    • SSDEEP

      768:PLJTpQbwIuTc13SRazm0FNNBcRa6Jac5SrwKSTPHaWptd0a+sGb+Oa9yGrvM:PLJNjGSRYTwabayBS2Qtd0aBNhw

    Score
    1/10

MITRE ATT&CK Enterprise v6

Tasks