Analysis

  • max time kernel
    150s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/10/2022, 21:17

General

  • Target

    b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe

  • Size

    902KB

  • MD5

    53b2d33e553121f7e5a0dcdb819aa638

  • SHA1

    0d06427be051fb2052fa11744ff759193a00f96c

  • SHA256

    b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d

  • SHA512

    1877b31a5ccdbaa7a49430eaf7941035c9be6016a62db8fd16a598bc3b1b62f56271d95ed63c50f62bee3a2b56a94539c48722c2e4fa7dfda0cc50046327af14

  • SSDEEP

    24576:5TBed//xueiltlf4rHqVLL66VoGFU1m4:54d/ZueiltOrHav6KoGF

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 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 2 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 AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe
    "C:\Users\Admin\AppData\Local\Temp\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe"
    1⤵
    • Modifies system executable filetype association
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1220
    • C:\Users\Admin\AppData\Local\Temp\3582-490\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe"
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Suspicious use of WriteProcessMemory
      PID:1564
      • \??\c:\62357e4d7090dedcbddd5\update\update.exe
        c:\62357e4d7090dedcbddd5\update\update.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • Suspicious use of AdjustPrivilegeToken
        PID:944

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\62357e4d7090dedcbddd5\update\update.exe

          Filesize

          399KB

          MD5

          1ef493cfe59a498a5cbf1cb489f07726

          SHA1

          7e4b7fbab01247cdac2936586148b902bf190347

          SHA256

          357c8aa2b1507c02625fbfcd79a382c163b23281be49e753ffe6a522125c0cf3

          SHA512

          d84c3c26b3b346d6a04f716262436df0aedad94aba86b7db9a2d5d56475c233dc0f8cd3a36f653a301ad9106351ea0045b3dbea2f4e9662497b3263ce1cb42e1

        • C:\Users\Admin\AppData\Local\Temp\3582-490\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe

          Filesize

          861KB

          MD5

          2711faf13bce14d0139a9f1669c27da3

          SHA1

          7838088fb05b29e54869d7bc50c10f8536da6cb1

          SHA256

          d7d9c2a15cbb55f00c41ee55ff60eea6fc34b0f93b1e8506b660dd8e24a38b88

          SHA512

          541654109ae633de49ca1688df7f85d87188a6559504e28be4b5e1e4939d1c8d4edd429b976de6694419bcd50eea4d03a1908cf8f93643b3d16e10c6cc3d687f

        • C:\Users\Admin\AppData\Local\Temp\3582-490\b190b4c25e78d93ed9fb8e5946c70b1752e71c5912f9f5cfa938505f4468dc6d.exe

          Filesize

          861KB

          MD5

          2711faf13bce14d0139a9f1669c27da3

          SHA1

          7838088fb05b29e54869d7bc50c10f8536da6cb1

          SHA256

          d7d9c2a15cbb55f00c41ee55ff60eea6fc34b0f93b1e8506b660dd8e24a38b88

          SHA512

          541654109ae633de49ca1688df7f85d87188a6559504e28be4b5e1e4939d1c8d4edd429b976de6694419bcd50eea4d03a1908cf8f93643b3d16e10c6cc3d687f

        • \??\c:\62357e4d7090dedcbddd5\update\update.exe

          Filesize

          399KB

          MD5

          1ef493cfe59a498a5cbf1cb489f07726

          SHA1

          7e4b7fbab01247cdac2936586148b902bf190347

          SHA256

          357c8aa2b1507c02625fbfcd79a382c163b23281be49e753ffe6a522125c0cf3

          SHA512

          d84c3c26b3b346d6a04f716262436df0aedad94aba86b7db9a2d5d56475c233dc0f8cd3a36f653a301ad9106351ea0045b3dbea2f4e9662497b3263ce1cb42e1

        • \??\c:\62357e4d7090dedcbddd5\update\update.inf

          Filesize

          25KB

          MD5

          ad0328202c8fb53f6c6fc13a4a204801

          SHA1

          e4b8e689fa23760a1e991777533fef7448b77321

          SHA256

          06b88504861d7be892f7382af8bc380a8caa2d282d6b12219cee00c561292625

          SHA512

          0a90cddaf7b05456cde7611b7e4b24f2da97501db8ba015f52593335901722cdd273653c9f4dc42e45b9405c466b55a372498ff5fa038f5fb89603e1df8b8455

        • memory/1564-138-0x0000000001000000-0x000000000101E000-memory.dmp

          Filesize

          120KB

        • memory/1564-140-0x0000000001000000-0x000000000101E000-memory.dmp

          Filesize

          120KB