Analysis

  • max time kernel
    135s
  • max time network
    128s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/10/2024, 04:31

General

  • Target
    uninstall.exe
  • Size 285KB
  • Sample241022-e5t1dsxerd
  • SHA256 4d706ac27d19384b05ec0d8d8a56864217fed26f44ef58043377f4f75dfa89aa
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 3 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).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2996
    • 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
      • System Location Discovery: System Language Discovery
      PID:2400

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        aminsis.dll

        • Path C:\Users\Admin\AppData\Local\Temp\nsiA6FF.tmp\aminsis.dll
        • Size 559KB
        • SHA256 b620091bf9973e807e12155d2247a6d233b5d13ec38c426675470ab4b26f0539
        • MD5 SHA1 SHA512 SSDEEP

        Au_.exe

        • Path C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe
        • Size 285KB
        • SHA256 4d706ac27d19384b05ec0d8d8a56864217fed26f44ef58043377f4f75dfa89aa
        • MD5 SHA1 SHA512 SSDEEP