Analysis

  • max time kernel
    153s
  • max time network
    41s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    26-11-2022 02:57

General

  • Target

    20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

  • Size

    85KB

  • MD5

    5400250c54d1398ee64ab55de3e47e20

  • SHA1

    3fec61f9accc06f6a1b0dd56065763f1a287b2e6

  • SHA256

    20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5

  • SHA512

    d258a253683765fc7a6ab092b12edfee5ff309966d70cc2ffdc5c06672c75335cc778678ac5c385b22c347b754410c6525540a8d53eb06f1893f320d80367704

  • SSDEEP

    1536:JxqjQ+P04wsmJC0F46MXfn3wX8kmvyOoVcU61piSI:sr85Ca46fO6jeUMNI

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 3 IoCs
  • 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 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
    "C:\Users\Admin\AppData\Local\Temp\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.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:836
    • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1604
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
        dw20.exe -x -s 540
        3⤵
          PID:1544

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

      Filesize

      44KB

      MD5

      6fdeb5bb8919aa51a646fd33814679f4

      SHA1

      afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

      SHA256

      ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

      SHA512

      bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

    • C:\Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

      Filesize

      44KB

      MD5

      6fdeb5bb8919aa51a646fd33814679f4

      SHA1

      afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

      SHA256

      ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

      SHA512

      bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

    • \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\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

      Filesize

      44KB

      MD5

      6fdeb5bb8919aa51a646fd33814679f4

      SHA1

      afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

      SHA256

      ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

      SHA512

      bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

    • \Users\Admin\AppData\Local\Temp\3582-490\20bd38f9b238c7b1f1890d08abcd7df74f0de026b442994bd453bc7cad67e1e5.exe

      Filesize

      44KB

      MD5

      6fdeb5bb8919aa51a646fd33814679f4

      SHA1

      afa8c3af71c5927ecf19bb610dbaa1e66c551aeb

      SHA256

      ab5de66d11d059bc6bd5574288bc6db347dcd20064d7cb4c7d31d62aa0368c32

      SHA512

      bd717c113d59f7e581ae0151dd7e4805b146842418d4c38b74028842d2712d34dfce3398dc29091bc33d6eb48c985524b969d24711b40386da6b739f2f66fe10

    • memory/836-54-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

      Filesize

      8KB

    • memory/1544-63-0x0000000000000000-mapping.dmp

    • memory/1544-64-0x000007FEFC001000-0x000007FEFC003000-memory.dmp

      Filesize

      8KB

    • memory/1604-57-0x0000000000000000-mapping.dmp

    • memory/1604-60-0x000007FEF4640000-0x000007FEF5063000-memory.dmp

      Filesize

      10.1MB

    • memory/1604-61-0x000007FEF3F90000-0x000007FEF4450000-memory.dmp

      Filesize

      4.8MB

    • memory/1604-62-0x000007FEF2CB0000-0x000007FEF3D46000-memory.dmp

      Filesize

      16.6MB