Analysis

  • max time kernel
    103s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20250502-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20250502-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/07/2025, 17:32

General

  • Target

    uninstall.exe

  • Size

    289KB

  • MD5

    64af24c71dff40b69397c3a69581427c

  • SHA1

    bbb4c291ee344c0170dee0bb75dc16928171b67c

  • SHA256

    88a61cfb1ca6536eec088b1bd3f47f21736e33cb8692a5edb3b6d33e476f0e84

  • SHA512

    c3972b8e63c3a6fd3b47d23f8c0a5058dd05d543365ab611a03f985d02b379fd53205caf3a0e6aad99467da173bd3dd9fe45b6550da95fca934c30400a824feb

  • SSDEEP

    6144:Ue34o0Rg4l8ai5PQtTZ763J8eWW43YLYjn5uO7D32fuCa7Bm+:N0q4OaQQTYJ8eP4/L5uO7D3f5Bv

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:636
    • 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:3368

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Local\Temp\nsuAB35.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

          64af24c71dff40b69397c3a69581427c

          SHA1

          bbb4c291ee344c0170dee0bb75dc16928171b67c

          SHA256

          88a61cfb1ca6536eec088b1bd3f47f21736e33cb8692a5edb3b6d33e476f0e84

          SHA512

          c3972b8e63c3a6fd3b47d23f8c0a5058dd05d543365ab611a03f985d02b379fd53205caf3a0e6aad99467da173bd3dd9fe45b6550da95fca934c30400a824feb