Analysis

  • max time kernel
    90s
  • 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, 16:20

General

  • Target

    uninstall.exe

  • Size

    289KB

  • MD5

    993a45b3ff49d9bf8c56bb1344f67858

  • SHA1

    a676eff6319511738b3ef4fd8ab4477fbed60ab3

  • SHA256

    1f7ff1ee812ed5ec52fde44cb5ba15ce4c78e163c07236edf09c0fd892554ef8

  • SHA512

    d6b86eb73d616d1cb9ba3fff8671e8dd5caa572d7ca3baaeea86730ebef5fef05324bd736db213b0e0c6ccc7b0c456884d69e7848d597e1fbd8578c6d646e689

  • SSDEEP

    6144:Ue34adRg4l8ai5PQtTZ763J8eWW43YLYjn5uO7D32fuCa7Bmi:Tdq4OaQQTYJ8eP4/L5uO7D3f5BL

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:2656
    • 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:3744

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\nsz6AA2.tmp\aminsis.dll

          Filesize

          567KB

          MD5

          450753ad96785a240a39deccab3af0d0

          SHA1

          21c544064d2ffa6444508268ce258a330d459fc5

          SHA256

          1c371dcc6c3428ea98fb0d2dcb612b4ebc731f3ed72e683c8e33058cd2a952d3

          SHA512

          c41b834f4228b7668316095569c836b4e0d55c5fbf310c65b0e0453ef0e74a3ce8f9357cea90b80f6590f85dd7708eeb4eec27518811ea4aab20c0e7f5643dab

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

          Filesize

          289KB

          MD5

          993a45b3ff49d9bf8c56bb1344f67858

          SHA1

          a676eff6319511738b3ef4fd8ab4477fbed60ab3

          SHA256

          1f7ff1ee812ed5ec52fde44cb5ba15ce4c78e163c07236edf09c0fd892554ef8

          SHA512

          d6b86eb73d616d1cb9ba3fff8671e8dd5caa572d7ca3baaeea86730ebef5fef05324bd736db213b0e0c6ccc7b0c456884d69e7848d597e1fbd8578c6d646e689