Analysis

  • max time kernel
    91s
  • max time network
    121s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/02/2024, 20:44

General

  • Target

    uninstall.exe

  • Size

    285KB

  • MD5

    b3ac31ae28334be98ba3a64776ecf24a

  • SHA1

    35f9bd28f326194ea33afe29b821a12e7765ea79

  • SHA256

    2d244145bd758214e8b25309952dc4df2b967a872f5ffd3f8ecf031d1ef8a643

  • SHA512

    94dd72193fbfd0616cabff36f316f74c3388d0025a609ccea79f5e88419b3fdc9e88c07b34b8329550281268ef4a4b819203412da7f94eaf42907c7e4950477f

  • SSDEEP

    6144:Ee34oTpeZH+zpyuuz6GZkDOJ/7OafSH5KmrWym09x1A:N9eZHkwuPikQ7lKH5p5H9x1A

Score
7/10

Malware Config

Signatures

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

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

  • Enumerates physical storage devices 1 TTPs

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

  • NSIS installer 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\uninstall.exe
    "C:\Users\Admin\AppData\Local\Temp\uninstall.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
      "C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:1364

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\nss663D.tmp\aminsis.dll

          Filesize

          559KB

          MD5

          51ba1095f0ae45a2d444bea506cb9ad4

          SHA1

          038a5d53d055a6d440bd2c8864c2f51db206c5e5

          SHA256

          b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539

          SHA512

          f5fe2dd0f19bcaab47540ceedbec71f7f7c5b833c8772c097594c458e5f1101fe9feb849812b65c175055f71dfb13f11c4ad94fef42cd66f247413e453de3361

        • C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe

          Filesize

          285KB

          MD5

          b3ac31ae28334be98ba3a64776ecf24a

          SHA1

          35f9bd28f326194ea33afe29b821a12e7765ea79

          SHA256

          2d244145bd758214e8b25309952dc4df2b967a872f5ffd3f8ecf031d1ef8a643

          SHA512

          94dd72193fbfd0616cabff36f316f74c3388d0025a609ccea79f5e88419b3fdc9e88c07b34b8329550281268ef4a4b819203412da7f94eaf42907c7e4950477f