Analysis

  • max time kernel
    163s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    01/10/2022, 17:58

General

  • Target

    37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe

  • Size

    426KB

  • MD5

    58bc234211a3153453758c1f12e525a0

  • SHA1

    a8ed82dc5e574988b88eb75a88f7cd8eb0348954

  • SHA256

    37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9

  • SHA512

    2ece654eae3c5d2a3e51b5bb81c4100afa210eb1b2b5c968327e68199da01625e203e8a0b976a9b257f44e7849d77a764849e68b91c675d111174a27649ad548

  • SSDEEP

    12288:J6i2OorcO8dsBKDUwqZHDqLzvcUGITg//XVgQQ:J6iVorcOesBKDUwqZjqHUUGITc3Q

Malware Config

Signatures

  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe
    "C:\Users\Admin\AppData\Local\Temp\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe"
    1⤵
    • Modifies system executable filetype association
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Users\Admin\AppData\Local\Temp\3582-490\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe"
      2⤵
      • Executes dropped EXE
      PID:936

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\3582-490\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe

          Filesize

          385KB

          MD5

          ee50651e28162c424a59364778398630

          SHA1

          c74ad79064edf2b0ef61ed2025bc928a7b3a6668

          SHA256

          825828caa01909a8263b65db9127e8103eaa72db9f919dbc0f841d17b5ba7a9e

          SHA512

          f72465183dbca793c8c895cb0387646cc12b6914c712ee0af5ea6d68a1146cec259593daef497abe022fbedabe659e966b10e43b651e4244da1673b3be19ebe6

        • \PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

          Filesize

          252KB

          MD5

          9e2b9928c89a9d0da1d3e8f4bd96afa7

          SHA1

          ec66cda99f44b62470c6930e5afda061579cde35

          SHA256

          8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

          SHA512

          2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

        • \Users\Admin\AppData\Local\Temp\3582-490\37fa8757aceda33ae6d1b2fc9866756b013c01dbc4eb0897517bf6bf278426c9.exe

          Filesize

          385KB

          MD5

          ee50651e28162c424a59364778398630

          SHA1

          c74ad79064edf2b0ef61ed2025bc928a7b3a6668

          SHA256

          825828caa01909a8263b65db9127e8103eaa72db9f919dbc0f841d17b5ba7a9e

          SHA512

          f72465183dbca793c8c895cb0387646cc12b6914c712ee0af5ea6d68a1146cec259593daef497abe022fbedabe659e966b10e43b651e4244da1673b3be19ebe6

        • memory/936-59-0x0000000000400000-0x0000000000467000-memory.dmp

          Filesize

          412KB

        • memory/1104-54-0x0000000075D01000-0x0000000075D03000-memory.dmp

          Filesize

          8KB